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              S/M No.TCN830FEF0




CHASSIS : CP-830F
MODEL : DTH-29U7




                         OTC 2003
                                                             CP830F Service Manual


                                    CONTENTS
DOCUMENT HISTORY                                                                5
1 MAIN FEATURES                                                                 5
   1.1 SPECIFICATIONS                                                           5
       1.1.1 GENERAL                                                            5
       1.1.2 EURO-SCART 1 (21 Pin)                                              5
       1.1.3 EURO-SCART 2 (21 Pin)                                              6
   1.2 CHANNEL/FREQUENCY TABLE                                                  7
   1.3 ATSS SORTING METHOD                                                     10
       1.3.1 GENERAL CASE                                                      10
       1.3.2 SPECIAL CASE                                                      10
2 SAFETY INSTRUCTION                                                           12
3 ALIGNMENT INSTRUCTIONS                                                       13
   3.1 MICROCONTROLLER CONFIGURATION : SERVICE MODE                            13
   3.2 SERVICE MODE NAVIGATION                                                 13
   3.3 MICROCONTROLLER CONFIGURATION : OPTION BITS                             13
       3.3.1 OPTION 1                                                          14
       3.3.2 OPTION 2                                                          14
3.4 TV SET ALIGNMENT                                                           14
       3.4.1 LOCAL OSCILLATOR ALIGNMENT                                        14
       3.4.2 G2 ALIGNMENT                                                      14
       3.4.3 WHITE BALANCE                                                     15
       3.4.4 FOCUS                                                             15
       3.4.5 VERTICAL GEOMETRY                                                 15
       3.4.6 HORIZONTAL PICTURE CENTRING                                       15
       3.4.7 EAST / WEST CORRECTION                                            15
       3.4.8 AGC                                                               16
4 IC DESCRIPTION                                                               17
   4.1 TELETEXT DECODER WITH EMBEDDED 8-BIT CONTROLLER                         17
       4.1.1 BLOCK DIAGRAM OF THE SDA55XX                                      17
       4.1.2 DESCRIPTION                                                       17
       4.1.3 IC MARKING AND VERSION                                            18
       4.1.4 PINNING                                                           18
   4.2 VSP9412A - SCAN RATE CONVERTER INCLUDING MULTISTANDARD COLOUR
        DECODER                                                                19
       4.2.1 BLOCK DIAGRAM OF THE VSP9412A                                     20
       4.2.2 DESCRIPTION                                                       20
       4.2.3 PINNING                                                           22
   4.3 DDP 3315C - DISPLAY AND DEFLECTION PROCESSOR                            23
       4.3.1 BLOCK DIAGRAM OF THE DDP 3315C                                    24
       4.3.2 DESCRIPTION                                                       24
       4.3.3 PINNING                                                           26
   4.4 MSP341X MULTISTANDARD SOUND PROCESSOR                                   28
       4.4.1 BASIC FEATURES OF THE MSP 341X                                    28
          4.4.1.1 Demodulator & NICAM Decoder Section                          28
          4.4.1.2 DSP-Section (Audio Baseband Processing)                      29

                                          -1-
CP830F Service Manual

         4.4.1.3 Analogue Section                                           29
         4.4.1.4 NICAM & FM/AM-Mono                                         29
         4.4.1.5 German 2-Carrier System (DUAL FM System)                   29
  4.5 TDA4470 - MULTISTANDARD VIDEO-IF AND QUASI PARALLEL SOUND PROCESSOR   32
      4.5.1 DESCRIPTION                                                     32
      4.5.2 FEATURES                                                        32
      4.5.3 PINNING                                                         32
      4.5.4 BLOCK DIAGRAM                                                   33
  4.6 TDA894XJ STEREO AUDIO AMPLIFIER                                       34
      4.6.1 FEATURES                                                        34
  4.7 TDA835XJ VERTICAL AMPLIFIER                                           35
      4.7.1 TDA8357J                                                        35
      4.7.2 TDA8358J                                                        37
  4.8 TDA6107Q                                                              39
  4.9 24C16 - 16 KB EEPROM                                                  40
  4.10 STR - F6654                                                          41
      4.10.1 GENERAL DESCRIPTION                                            41
      4.10.2 FEATURES                                                       41
      4.10.3 BLOCK DIAGRAM                                                  41
      4.10.4 PIN DESCRIPTION                                                42
      4.10.5 CONTROL PART - ELECTRICAL CHARACTERISTICS                      42
      4.10.6 MOSFET ELECTRICAL CHARACTERISTICS                              43
5 CP830 CHASSIS DESCRIPTION                                                 44
  5.1 BLOCK DIAGRAM                                                         44
  5.2 IF SECTION                                                            45
      5.2.1 BLOCK DIAGRAM                                                   45
      5.2.2 VISION IF AMPLIFIER                                             46
      5.2.3 TUNER-AND VIF-AGC                                               46
      5.2.4 FPLL, VCO AND AFC                                               46
      5.2.5 VIDEO DEMODULATION AND AMPLIFIER                                47
      5.2.6 SOUND IF AMPLIFIER AND SIF-AGC                                  47
      5.2.7 QUASI-PARALLEL-SOUND (QPS) MIXER                                47
      5.2.8 STANDARD SWITCH                                                 47
      5.2.9 L SWITCH                                                        47
      5.2.10 INTERNAL VOLTAGE STABILISER                                    47
  5.3 VIDEO / RGB 51
      5.3.1 FRONT END                                                       47
         5.3.1.1 CVBS Front-End                                             47
         5.3.1.2 Input Selector                                             48
         5.3.1.3 Signal Levels And Gain Control                             48
         5.3.1.4 Synchronization                                            48
         5.3.1.5 Chroma Decoder                                             48
         5.3.1.6 Luminance Processing                                       48
         5.3.1.7 RGB Front-End                                              48
         5.3.1.8 Signal Processing                                          48
            5.3.1.8.1 Horizontal Prescaler                                  48
            5.3.1.8.2 Noise Reduction                                       49
            5.3.1.8.3 Noise Measurement                                     49
            5.3.1.8.4 Operation Modes                                       49
                                           -2-
                                                             CP830F Service Manual

          5.3.1.8.5 Digital 656 Output                                         49
    5.3.2 BACK END                                                             49
       5.3.2.1 Digital Input Interface                                         49
       5.3.2.2 Horizontal Scaler                                               49
       5.3.2.3 Luma Contrast and Brightness                                    49
       5.3.2.4 Black Level Expander/Compressor (BLEC)                          49
       5.3.2.5 Luma Sharpness Enhancer (LSE)                                   50
       5.3.2.6 Dynamic Peaking                                                 50
       5.3.2.7 Luma Transient Improvement (LTI)                                50
       5.3.2.8 Mixing of Dynamic Peaking and LTI                               50
       5.3.2.9 Chroma Transient Improvement                                    50
       5.3.2.10 Analog Back End                                                51
       5.3.2.11 Analog RGB Insertion                                           51
       5.3.2.12 CRT Measurement and Control                                    51
       5.3.2.13 Synchronization and Deflection                                 52
       5.3.2.14 EHT Compensation                                               52
5.4 MICROCONTROLLER                                                            52
    5.4.1 MICROCONTROLLER FEATURES                                             52
    5.4.2 ACQUISITION FEATURES                                                 53
    5.4.3 PORTS                                                                53
    5.4.4 -CONTROLLER I/O PIN CONFIGURATION AND FUNCTION TABLE                 53
    5.4.5 TUNING                                                               54
    5.4.6 AUTOMATIC PICTURE FORMAT SWITCHING                                   54
       5.4.6.1 WSS Data                                                        54
       5.4.6.2 SCART Pin 8 Data (Slow Switching)                               55
       5.4.6.3 Picture Format Description                                      55
          5.4.6.3.1 16:9 CRT                                                   55
          5.4.6.3.2 4:3 CRT                                                    56
    5.4.7 EXTERNAL SOURCE CONTROL LOGIC                                        57
    5.4.8 OVER CURRENT PROTECTION                                              58
5.5 TELETEXT DISPLAY                                                           58
5.6 SOUND PROCESSING                                                           59
    5.6.1 ANALOGUE SOUND IF - INPUT SECTION                                    59
    5.6.2 QUADRATURE MIXERS                                                    59
    5.6.3 PHASE AND AM DISCRIMINATION                                          59
    5.6.4 NICAM DECODER                                                        60
    5.6.5 DSP SECTION                                                          60
    5.6.6 SOUND MODE SWITCHING                                                 60
5.7 SOUND AMPLIFICATION                                                        60
    5.7.1 POWER AMPLIFIER                                                      60
    5.7.2 MODE SELECTION                                                       60
5.8 VERTICAL DEFLECTION                                                        61
    5.8.1 FLYBACK VOLTAGE                                                      61
    5.8.2 PROTECTION                                                           61
    5.8.3 GUARD CIRCUIT                                                        61
    5.8.4 DAMPING RESISTOR                                                     61
    5.8.5 EAST-WEST AMPLIFIER (TDA8358J ONLY)                                  61
5.9 POWER SUPPLY (STR F6654)                                                   61
    5.9.1 STR-F6654 GENERAL DESCRIPTION                                        61
                                          -3-
CP830F Service Manual

     5.9.2 POWER SUPPLY PRIMARY PART OPERATIONS                   61
        5.9.2.1 Start -up Circuit: VIN                            62
        5.9.2.2 STR-F6654 Oscillating Operation                   63
        5.9.2.3 STR-F6654 Protection Circuits                     64
  5.10 TV START-UP, TV NORMAL RUN AND STAND BY MODE OPERATIONS    65
     5.10.1 TV START-UP OPERATIONS                                65
        5.10.1.1 Schematic Diagram For Start-Up Operations        65
        5.10.1.2 TV Start-Up And Microcontroller Initialisation   65
     5.10.2 TV NORMAL RUN AND STAND-BY MODE OPERATIONS            67
        5.10.2.1 TV On Normal Run Mode                            67
        5.10.2.2 TV Set On Stand-By Mode                          70
6 SERVICE PARTS LIST                                              72
     6.1 DTH-29U7ZL                                               72

7 EXPLODED VIEW                                                   88
    7.1 DTH-29U7                                                  88




8 PRINTED CIRCULT BOARD                                           93
     8.1 MAIN PCB                                                 93
     8.2 CRT PCB                                                  94
     8.3 PFC PCB                                                  95
9 SCHEMATIC DIAGRAM                                               96




                                            -4-
                                                                                  CP830F Service Manual

DOCUMENT HISTORY

 VERSION          DATE                                  COMMENTS
  V1.00          18/11/02       Creation of document (Author M Hearn) for project CP830 100Hz TV.
  V1.01          22/11/02       Reformatting of the document, plus insertion of Document History section
1 MAIN FEATURES
1.1 SPECIFICATIONS
1.1.1 GENERAL
        TV standard                   PAL - SECAM B/G D/K, PAL I/I, SECAM L/L
        Colour system        Tuner    PAL, SECAM
                             AV       PAL, SECAM, PAL 60, NTSC M, NTSC 4.43
        Sound system                  NICAM B/G, I, D/K, L,
                                      FM 2Carrier B/G, D/K
        Power                         29"(4:3) Real Flat :84W approx.
        consumption
        Sound Output Power            7W x 2 (at 60% mod, 10%THD)
        Speaker                       12W 8 ohm x2
        Teletext system               9 pages memory FASTEXT (FLOF or TOP)
        Aerial input                  75 ohm unbalanced
        Channel coverage              Off-air channels, S-cable channels and hyperband
        Tuning system                 frequency synthesiser tuning system
        Visual screen size
                                      29" : 68cm
        Channel indication            On Screen Display
        Program Selection             100 programmes
        Aux. terminal                 EURO-SCART 1 : Audio / Video In and Out, R/G/B
                                      In, Slow and Fast switching.
                                      EURO-SCART 2 : Audio / Video In and Out, SVHS In.
                                      AV3 : Audio-Video Jack on front of cabinet.
                                      Headphone jack (3.5 mm) on front of cabinet
                                      SVHS3 (option) : Jack on front of cabinet ? sound
                                      input common with AV3.
        Remote Control                R-46G22

 Unit
        1.1.2 EURO-SCART 1 (21 Pin)
          Pin   Signal Description          Matching value
           1    Audio Output Right          0.5 Vrms, Impedance < 1 k , ( RF 54% Mod )
           2    Audio Input Right           0.5 Vrms, Impedance > 10 k
           3    Audio Output Left           0.5 Vrms, Impedance < 1 k , ( RF 54% Mod )
           4    Audio Earth
           5    Blue Earth
           6    Audio Input Left            0.5 Vrms, Impedance > 10 k
           7    Blue Input                  0.7 Vpp 0.1V, Impedance 75



                                                          -5-
CP830F Service Manual

      9     Green Earth
     10     N.C.
     11     Green Input          0.7 Vpp    0.1V, Impedance 75
     12     N.C.
     13     Red Earth
     14     Blanking Earth
     15     Red Input            0.7 Vpp 0.1V, Impedance 75
     16     Fast Switching       0 to 0.4V : Logic 0 , 1 to 3V : Logic 1 , Impedance 75
     17     Video Out Earth
     18     Video In Earth
     19     Video Output         1 Vpp     3dB, Impedance 75
     20     Video Input          1 Vpp     3dB, Impedance 75
     21     Common Earth

1.1.3 EURO-SCART 2 (21 Pin)
     Pin    Signal Description    Matching value
      1     Audio Output Right    0.5 Vrms, Impedance < 1 k ( RF 54% Mod )
      2     Audio Input Right     0.5 Vrms, Impedance > 10 k
      3     Audio Output Left     0.5 Vrms, Impedance < 1 k , ( RF 54% Mod )
      4     Audio Earth
      5     Earth
      6     Audio Input Left      0.5 Vrms, Impedance > 10 k
      7     N.C.
      8     N.C.
      9     N.C.
     10     N.C.
     11     N.C.
     12     N.C.
     13     Earth
     14     Earth
     15     Chroma Input            3dB for a luminance signal of 1 Vpp
     16     N.C.
     17     Earth
     18     Video In Earth
     19     Video Output          1 Vpp     3dB, Impedance 75                   ( Monitor output )
     20     Video Input, Y In.    1 Vpp     3dB, Impedance 75
     21     Common Earth



                                  20 18 16 14 12 10 8       6       4       2

                                 21 19 17 15 13 11 9    7       5       3       1




                                                 -6-
                                                     CP830F Service Manual

1.2 CHANNEL/FREQUENCY TABLE

 CHANNEL       EUROPE CCIR      FRANCE       GB(IRELAND)       EAST OIRT
   C01             46.25            -            45.75            49.75
   C02             48.25       55.75 (L )        53.75            59.25
   C03             55.25        60.5 (L )        61.75            77.25
   C04             62.25       63.75 (L )       175.25           85.25
   C05            175.25         176.00         183.25           93.25
   C06            182.25         184.00         191.25           175.25
   C07            189.25         192.00         199.25           183.25
   C08            196.25         200.00         207.25           191.25
   C09            203.25         208.00         215.25           199.25
   C10            210.25         216.00         223.25           207.25
   C11            217.25      189.25 (LUX)      231.25           215.25
   C12            224.25       69.25 (L )       239.25           223.25
   C13             53.75       76.25 (L )       247.25              -
   C14               -         83.25 (L )        49.75              -
   C15             82.25          90.25          57.75              -
   C16               -            97.25          65.75              -
   C17            183.75            -            77.75              -
   C18            192.25            -            85.75              -
   C19            201.25            -              -                -
   C20               -              -              -                -
   C21            471.25         471.25         471.25           471.25
   C22            479.25         479.25         479.25           479.25
   C23            487.25         487.25         487.25           487.25
   C24            495.25         495.25         495.25           495.25
   C25            503.25         503.25      503.25503.25
   C26            511.25         511.25         511.25          511.25
   C27            519.25         519.25         519.25          519.25
   C28            527.25         527.25         527.25          527.25
   C29            535.25         535.25         535.25          535.25
   C30            543.25         543.25         543.25          543.25
   C31            551.25         551.25         551.25          551.25
   C32            559.25         559.25         559.25          559.25
   C33            567.25         567.25         567.25          567.25
   C34            575.25         575.25         575.25          575.25
   C35            583.25         583.25         583.25          583.25
   C36            591.25         591.25         591.25          591.25
   C37            599.25         599.25         599.25          599.25
   C38            607.25         607.25         607.25          607.25
   C39            615.25         615.25         615.25          615.25
   C40            623.25         623.25         623.25          623.25
   C41            631.25         631.25         631.25          631.25
   C42            639.25         639.25         639.25          639.25
   C43            647.25         647.25         647.25          647.25
   C44            655.25         655.25         655.25          655.25
   C45            663.25         663.25         663.25          663.25

                                       -7-
CP830F Service Manual

CHANNEL     EUROPE CCIR   FRANCE      GB(IRELAND)   EAST OIRT
  C46          671.25      671.25        671.25       671.25
  C47          679.25      679.25        679.25       679.25
  C48          687.25      687.25        687.25       687.25
  C49          695.25      695.25        695.25       695.25
  C50          703.25      703.25        703.25       703.25
  C51          711.25      711.25        711.25       711.25
  C52          719.25      719.25        719.25       719.25
  C53          727.25      727.25        727.25       727.25
  C54          735.25      735.25        735.25       735.25
  C55          743.25      743.25        743.25       743.25
  C56          751.25      751.25        751.25       751.25
  C57          759.25      759.25        759.25       759.25
  C58          767.25      767.25        767.25       767.25
  C59          775.25      775.25        775.25       775.25
  C60          783.25      783.25        783.25       783.25
  C61          791.25      791.25        791.25       791.25
  C62          799.25      799.25        799.25       799.25
  C63          807.25      807.25        807.25       807.25
  C64          815.25      815.25        815.25       815.25
  C65          823.25      823.25        823.25       823.25
  C66          831.25      831.25        831.25       831.25
  C67          839.25      839.25        839.25       839.25
  C68          847.25      847.25        847.25       847.25
  C69          855.25      855.25        855.25       855.25
  C70          863.25      863.25        863.25       863.25
  C71           69.25         -             -            -
  C72           76.25         -             -            -
  C73           83.25         -             -            -
  C74           90.25         -             -            -
  C75           97.25         -             -            -
  C76           59.25         -             -            -
  C77           93.25         -             -            -
  S01          105.25      104.75        103.25       105.25
  S02          112.25      116.75        111.25       112.25
  S03          119.25      128.75        119.25       119.25
  S04          126.25      140.75        127.25       126.25
  S05          133.25      152.75        135.25       133.25
  S06          140.25      164.75        143.25       140.25
  S07          147.25      176.75        151.25       147.25
  S08          154.25      188.75        159.25       154.25
  S09          161.25      200.75        167.25       161.25
  S10          168.25      212.75           -         168.25
  S11          231.25      224.75           -         231.25
  S12          238.25      236.75           -         238.25
  S13          245.25      248.75        255.25       245.25
  S14          252.25      260.75        263.25       252.25
  S15          259.25      272.75        271.25       259.25
  S16          266.25      284.75        279.25       266.25
                                -8-
                                           CP830F Service Manual

CHANNEL   EUROPE CCIR   FRANCE      GB(IRELAND)      EAST OIRT
  S17        273.25      296.75        287.25          273.25
  S18        280.25      136.00        295.25          280.25
  S19        287.25      160.00        303.25          287.25
  S20        294.25         -             -            294.25
  S21        303.25      303.25           -            303.25
  S22        311.25      311.25        311.25          311.25
  S23        319.25      319.25        319.25          319.25
  S24        327.25      327.25        327.25          327.25
  S25        335.25      335.25        335.25          335.25
  S26        343.25      343.25        343.25          343.25
  S27        351.25      351.25        351.25          351.25
  S28        359.25      359.25        359.25          359.25
  S29        367.25      367.25        367.25          367.25
  S30        375.25      375.25        375.25          375.25
  S31        383.25      383.25        383.25          383.25
  S32        391.25      391.25        391.25          391.25
  S33        399.25      399.25        399.25          399.25
  S34        407.25      407.25        407.25          407.25
  S35        415.25      415.25        415.25          415.25
  S36        423.25      423.25        423.25          423.25
  S37        431.25      431.25        431.25          431.25
  S38        439.25      439.25        439.25          439.25
  S39        447.25      447.25        447.25          447.25
  S40        455.25      455.25        455.25          455.25
  S41        463.25      463.25        463.25          463.25




                              -9-
CP830F Service Manual

1.3 ATSS SORTING METHOD

The TV set sweeps all the TV bands from beginning of VHF to end of UHF. The TV controlling software for each
program checks if a VPS CNI code is transmitted (this system exists for German, Swiss and Austrian transmissions).
If no VPS CNI code is found, then the system checks if a CNI code is transmitted as part of the teletext transmission
( Packet 8/30 format 1 and format 2). If such a code ( VPS or teletext ) is found and if this code is in the ATSS list, the
program is automatically named.
If the transmission does not have VPS CNI, and no teletext service is available, then there is no possibility of the
program being automatically named.
The programs found are then sorted in 4 groups :

Group I : It contains all the programs from the selected country and named by the TV controlling software. Within this
group the sorting order is fixed by the ATSS list.
Group II : It contains all the programs with a strong signal strength which are not listed in group I.
Group III : It contains all the programs with a weak signal strength which are not listed in group I.
Group IV : If two or more programs with the same code are found, only the strongest ( or if they have the same level
the one with the lowest frequency) is listed in group I, II or III. The others are listed in group IV.


1.3.1 GENERAL CASE                                                1.3.2 SPECIAL CASE


  Program                                                             Program
                            Group                Skip                                      Group                Skip
  number                                                              number
      1                                                                   1
      2                    Group I                                       ...              Group II
     ...                                                                 m
      n                                                                 m+1
    n+1                                                                  ...              Group III
     ...                   Group II                                       p
     m                                                                  p+1
    m+1                                                                  ...              Group IV
     ...                  Group III                                       q
      p                                                                 q+1
    p+1                                                                  ...              not used
     ...                  Group IV                                       99
      q                                                                   0
    q+1                                                           Special case : Country selection = Others
     ...                  not used
     99
      0




                                                           -10-
                                                                     CP830F Service Manual

Note : If two programs with the same name but a different code are found these two programs
are listed in group I, II or III .

The sorting order within group II, III, and IV is based on the channel frequency. The program
with the lowest frequency is allocated the first rank in its group, and so forth until the last
program of the group which has the highest frequency.

Special case : France
If France is selected, the TV controlling software first sweeps all TV bands with France system
selected ( positive video modulation) and then a second time with Europe system selected (
negative video modulation).

Special case : Switzerland
If Switzerland is selected the TV controlling software first sweeps all TV bands with Europe
system selected (negative video modulation) and then a second time with France system
selected ( positive video modulation).

Special case : GB
Note for satellite receiver users : Before starting ATSS turn on your satellite receiver and tune to
   SKY NEWS .
If GB is selected the TV controlling software seeks for programs only in UHF ( C21 to C70 ).
The
sorting order is :
1 - BBC1
2 - BBC2
3 - ITV
4 - CH4
5 - CH5
6 ? NEWS (Sky News)

If two or more identical programs ( same name but different code e.g. BBC1 and BBC1
Scotland ) are found the following programs in the list will be shifted up. (1 - BBC1, 2 - BBC1, 3
-
BBC2, 4 - ITV, 5 - CH4, 6 - CH5, 7 - NEWS, ..)

If one of the programs above is not found, the associated program number remains empty (
freq.=467.25 MHz - Skip selected - no name ? system = GB).
example A : 1 - BBC1, 2 - BBC2, 3 - ITV, 4 - -----, 5 - CH5, 6 - NEWS, ...
example B ( if 2 BBC1 found ) : 1 - BBC1, 2 - BBC1, 3 - BBC2, 4 - ITV, 5 - -----, 6 - CH5, 7 -
NEWS, ...




                                                -11-
CP830F Service Manual

2 SAFETY INSTRUCTION

WARNING: Only competent service personnel may carry out work involving the testing or repair
of this equipment.

X-RAY RADIATION PRECAUTION

1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid
such hazards, the high voltage must not exceed the specified limit. The nominal value of the
high
voltage of this receiver is 25-26 KV (20 -21 ) or 26 KV (25 - 28 ) at max beam current. The
high
voltage must not, under any circumstances, exceed 27.5 KV (20 ), 29KV (21 ), 29.5 KV (25 )
or
30 KV (28 ). Each time a receiver requires servicing, the high voltage should be checked. It is
important to use an accurate and reliable high voltage meter.
2. The only source of X-RAY Radiation in this TV receiver is the picture tube. For continued
X-RAY RADIATION protection, the replacement tube must be exactly the same type tube as
specified in the parts list.

SAFETY PRECAUTION

Potentials of high voltage are present when this receiver is operating. Operation of the receiver
outside the cabinet or with the back board removed involves a shock hazard from the receiver.
Servicing should not be attempted by anyone who is not thoroughly familiar with the
precautions
necessary when working on high voltage equipment.
Discharge the high potential of the picture tube before handling the tube. The picture tube is
highly evacuated and if broken, glass fragments will be violently expelled.
If any Fuse in this TV receiver is blown, replace it with the FUSE specified in the Replacement
Parts List.
When replacing a high wattage resistor (metal oxide film resistor) in the circuit board, keep the
resistor 10 mm away from circuit board.
Keep wires away from high voltage or high temperature components.
This receiver must operate under AC 230 volts, 5O Hz. NEVER connect to a DC supply or any
other voltage or frequency.

PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in this equipment have special safety-related
characteristics. These characteristics are often passed unnoticed by a visual inspection and the
X-RAY RADIATION protection afforded by them cannot necessarily be obtained by using
replacement components rated for higher voltage, wattage, etc. Replacement parts which have
these special safety characteristics are identified in this manual and its supplements, electrical
components having such features are identified by designated symbol on the parts list. Before
replacing any of these components, read the parts list in this manual carefully. The use of
substitutes replacement parts which do not have the same safety characteristics as specified in
the parts list may create X-RAY Radiation.

                                               -12-
                                                                                     CP830F Service Manual

3 ALIGNMENT INSTRUCTIONS

3.1MICROCONTROLLER CONFIGURATION : SERVICE MODE
To switch the TV set into service mode please see instruction below.

1 - Select PR. number 91
2 - Adjust sharpness to minimum and exit all menus.
3 - Within 2 seconds press the key sequence : RED - GREEN - menu

The software version is displayed beside the word Service, e.g. SERVICE V1.00 .

To exit SERVICE menu press menu key or Std By key.
3.2SERVICE MODE NAVIGATION

Pr Up/Down remote keys : cycle through the service items available.
Vol -/+ remote keys    : Dec./Increment the values within range - Cycle trough option bits.
OK key                 : Toggle bits in option byte

                          Order                Item                     Default setting
                            1               HOR CEN
                            2               RED GAIN
                            3              GRN GAIN
                            4              BLUE GAIN
                            5               RED BIAS
                            6               GRN BIAS
                            7              AGC LEVEL
                            8             G2 - SCREEN
                            9                   AFT
                           10               OPTION1
                           11               OPTION2
                           12              PARABOLA
                           13             HOR WIDTH
                           14              CORNER T
                           15              CORNER B
                           16             HOR. PARAL
                           17               V. LINEAR
                           18             EW TRAPEZ
                           19             S CORRECT
                           20             VERT CENT
                           21              VERT SIZE


3.3 MICROCONTROLLER CONFIGURATION : OPTION BITS

There are two option bytes available (16 bits in all). These option bits are available from Service
mode. First find the OPTION1 or OPTION2 control, and then use the Volume PLUS/MINUS
buttons on the remote control keypad to locate the bits, and OK key to toggle them. The table
below shows the two option bytes available;

                                                           -13-
CP830F Service Manual

3.3.1 OPTION 1

           B7          B6            B5                 B4                    B3          B2        B1         B0
          TOP       FASTEXT         TUBE           Headphone                Dolby       SVHS      Tuner options
  1       text       (FLOF)          4:3         Volume/Balance             Virtual        3      00 = Philips
          OFF         OFF                          control OFF               OFF        disable   01 = not used
          TOP       FASTEXT         TUBE           Headphone                Dolby       SVHS      10 = ALPS
  0     text ON      (FLOF)          16:9        Volume/Balance             Virtual        3      11 = PARTSNIC
                       ON                           control ON               ON         enable    (DW)

3.3.2 OPTION 2


       B7              B6                 B5              B4               B3              B2   B1 B0
 1 Fixed to `0' JVC remote control AVL control OFF PICTURE TILT ON Program list enabled See table below.
 0             Daewoo Remote control AVL control ON PICTURE TILT OFF Program list disabled



                                                                      Beam Current
                   Tube                                                   (mA)            B2        B1         B0
                                                              Nominal            Max
                                                                   0.95          1.10     0          0          0
                                                                   1.00          1.15     0          0          1
 4/3 - Super Flat, 16/9 



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