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                                        S/M No.TCP855FEF0



Service Manual
CHASSIS : CP-855F
MODEL : DTV-3220
        DTV-32W9




   Caution
   : In this Manual, some parts can be changed for improving. their
     performance without notice in the parts list. So, if you need the
     latest parts information, please refer to PPL(Parts Price List)in
     Service Information Center.




                                                         JUN.2006
                                                       CP-855F Service Manual

                                  CONTENTS


1 MAIN FEATURES                                                          5
   1.1 SPECIFICATIONS                                                    5
       1.1.1 GENERAL                                                     5
   1.2 CHANNEL/FREQUENCY TABLE                                           6
   1.3 ATSS SORTING METHOD                                               9
       1.3.1 GENERAL CASE                                                9
2 SAFETY INSTRUCTION                                                    11
3 ALIGNMENT INSTRUCTIONS                                                12
   3.1 MICROCONTROLLER CONFIGURATION : SERVICE MODE                     12
   3.2 SERVICE MODE NAVIGATION                                          12
   3.3 MICROCONTROLLER CONFIGURATION : OPTION BITS                      12
       3.3.1 OPTION 1                                                   13
       3.3.2 OPTION 2                                                   13
       3.4 TV SET ALIGNMENT                                             13
       3.4.1 LOCAL OSCILLATOR ALIGNMENT                                 13
       3.4.2 G2 ALIGNMENT                                               13
       3.4.3 WHITE BALANCE                                              14
       3.4.4 FOCUS                                                      14
       3.4.5 VERTICAL GEOMETRY                                          14
       3.4.6 HORIZONTAL PICTURE CENTRING                                14
       3.4.7 EAST / WEST CORRECTION                                     14
       3.4.8 AGC                                                        15
4 IC DESCRIPTION                                                        16
   4.1 TELETEXT DECODER WITH EMBEDDED 8-BIT CONTROLLER                  16
       4.1.1 BLOCK DIAGRAM OF THE SDA55XX                               16
       4.1.2 DESCRIPTION                                                16
       4.1.3 IC MARKING AND VERSION                                     17
       4.1.4 PINNING                                                    17
   4.2 VSP9405 - SCAN RATE CONVERTER INCLUDING MULTISTANDARD COLOUR
       DECODER                                                          18
       4.2.1 BLOCK DIAGRAM OF THE VSP9405                               19
       4.2.2 DESCRIPTION                                                19
       4.2.3 PINNING                                                    21
   4.3 DDP 3315C - DISPLAY AND DEFLECTION PROCESSOR                     26
       4.3.1 BLOCK DIAGRAM OF THE DDP 3315C                             26
       4.3.2 DESCRIPTION                                                27
       4.3.3 PINNING                                                    29
   4.4 MSP341X MULTISTANDARD SOUND PROCESSOR                            31
       4.4.1 BASIC FEATURES OF THE MSP 341X                             31
       4.4.1.1 Demodulator & NICAM Decoder Section                      31


                                       -1-
CP-855F Service Manual

     4.4.1.2 DSP-Section (Audio Baseband Processing)                       32
     4.4.1.3 Analogue Section                                              32
     4.4.1.4 NICAM & FM/AM-Mono                                            32
     4.4.1.5 German 2-Carrier System (DUAL FM System)                      32
 4.5 TDA4470 - MULTISTANDARD VIDEO-IF AND QUASI PARALLEL SOUND PROCESSOR   35
     4.5.1 DESCRIPTION                                                     35
     4.5.2 FEATURES                                                        35
     4.5.3 PINNING                                                         35
     4.5.4 BLOCK DIAGRAM                                                   36
 4.6 TDA894XJ STEREO AUDIO AMPLIFIER                                       37
     4.6.1 FEATURES                                                        37
 4.7 TDA835XJ VERTICAL AMPLIFIER                                           38
     4.7.1 TDA8357J                                                        38
     4.7.2 TDA8358J                                                        40
 4.8 TDA6108JF                                                             42
 4.9 24C16 - 16 KB EEPROM                                                  43
 4.10 STR - W6754                                                          44
     4.10.1 GENERAL DESCRIPTION                                            44
     4.10.2 FEATURES                                                       44
     4.10.3 BLOCK DIAGRAM                                                  44
     4.10.4 ELECTRICAL CHARACTERISTICS                                     45

5 CP-850F CHASSIS DESCRIPTION                                              47
  5.1 BLOCK DIAGRAM                                                        47
  5.2 IF SECTION                                                           48
      5.2.1 BLOCK DIAGRAM                                                  48
      5.2.2 VISION IF AMPLIFIER                                            49
      5.2.3 TUNER-AND VIF-AGC                                              49
      5.2.4 FPLL, VCO AND AFC                                              49
      5.2.5 VIDEO DEMODULATION AND AMPLIFIER                               50
      5.2.6 SOUND IF AMPLIFIER AND SIF-AGC                                 50
      5.2.7 QUASI-PARALLEL-SOUND (QPS) MIXER                               50
      5.2.8 STANDARD SWITCH                                                50
      5.2.9 L SWITCH                                                       50
      5.2.10 INTERNAL VOLTAGE STABILISER                                   50
  5.3 VIDEO / RGB
      5.3.1 FRONT END                                                      50
      5.3.1.1 CVBS Front-End                                               50
      5.3.1.2 Input Selector                                               51
      5.3.1.3 Signal Levels And Gain Control                               51
      5.3.1.4 Synchronization                                              51
      5.3.1.5 Chroma Decoder                                               51
      5.3.1.6 Luminance Processing                                         51


                                         -2-
                                                         CP-855F Service Manual

5.3.1.7 RGB Front-End                                                     51
      5.3.1.8 Signal Processing                                           51
      5.3.1.8.1 Horizontal Prescaler                                      51
      5.3.1.8.2 Noise Reduction                                           52
      5.3.1.8.3 Noise Measurement                                         52
      5.3.1.8.4 Operation Modes                                           52
      5.3.1.8.5 Digital 656 Output                                        52
  5.3.2 BACK END                                                          52
      5.3.2.1 Digital Input Interface                                     52
      5.3.2.2 Horizontal Scaler                                           52
      5.3.2.3 Luma Contrast and Brightness                                52
      5.3.2.4 Black Level Expander/Compressor (BLEC)                      52
      5.3.2.5 Luma Sharpness Enhancer (LSE)                               53
      5.3.2.6 Dynamic Peaking                                             53
      5.3.2.7 Luma Transient Improvement (LTI)                            53
      5.3.2.8 Mixing of Dynamic Peaking and LTI                           53
      5.3.2.9 Chroma Transient Improvement                                53
      5.3.2.10 Analog Back End                                            54
      5.3.2.11 Analog RGB Insertion                                       54
      5.3.2.12 CRT Measurement and Control                                54
      5.3.2.13 Synchronization and Deflection                             55
      5.3.2.14 EHT Compensation                                           55
  5.4 MICROCONTROLLER                                                     55
      5.4.1 MICROCONTROLLER FEATURES                                      55
      5.4.2 ACQUISITION FEATURES                                          56
      5.4.3 PORTS                                                         56
      5.4.4 CONTROLLER I/O PIN CONFIGURATION AND FUNCTION TABLE           56
      5.4.5 OVER CURRENT PROTECTION                                       57
  5.5 TELETEXT DISPLAY                                                    57
  5.6 SOUND PROCESSING                                                    58
      5.6.1 ANALOGUE SOUND IF - INPUT SECTION                             58
      5.6.2 QUADRATURE MIXERS                                             58
      5.6.3 PHASE AND AM DISCRIMINATION                                   58
      5.6.4 NICAM DECODER                                                 59
      5.6.5 DSP SECTION                                                   59
      5.6.6 SOUND MODE SWITCHING                                          59
  5.7 SOUND AMPLIFICATION                                                 59
      5.7.1 POWER AMPLIFIER                                               59
      5.7.2 MODE SELECTION                                                59
  5.8 VERTICAL DEFLECTION                                                 60
      5.8.1 FLYBACK VOLTAGE                                               60
      5.8.2 PROTECTION                                                    60
      5.8.3 GUARD CIRCUIT                                                 60
      5.8.4 DAMPING RESISTOR                                              60

                                         -3-
CP-855F Service Manual

     5.8.5 EAST-WEST AMPLIFIER (TDA8358J ONLY)   60
6 SERVICE PARTS LIST                             61
7 SCHEMATIC DIAGRAM                              79
8 PRINTED CIRCULT BOARD                          81
9 EXPLODED VIEW                                  89




                                          -4-
                                                                         CP-855F Service Manual

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 :110W approx.
        consumption              28"(16:9) Real Flat : 110W approx.
        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       76cm
        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-49C05



 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-
CP-855F Service Manual

1.2 CHANNEL/FREQUENCY TABLE




 1.2.1 CHANNEL/FREQUENCY TABLE




                                 -6-
                                             CP-855F Service Manual


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        4 79.25          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         503.25          503.25
  C26        511.25       511.25 5         11.25          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
  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

                                 -7-
CP-855F Service Manual

 CHANNEL     EUROPE CCIR   FRANCE      GB(IRELAND)   EAST OIRT
   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
  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
                                 -8-
                                                                                    CP-855F 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




                                                            -9-
CP-855F 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, ...




                                                -10-
                                                                  CP-855F 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 28-29 KV (32"). The high voltage must not, under any
   circumstances, exceed 31 KV (32"). 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 240 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.




                                               -11-
CP-855F 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 Stand By key.
3.2 SERVICE 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               RED BIAS
                           5               GRN BIAS
                           6              AGC LEVEL
                           7             G2 - SCREEN
                           8                   AFT
                           9                OPTION1
                          10                OPTION2
                          11                OPTION3
                          12                   AVL
                          13              PARABOLA
                          14             HOR WIDTH
                          15              CORNER T
                          16              CORNER B
                          17             HOR. PARAL
                          18                V.LINEAR
                          19             EW TRAPEZ
                          20             S CORRECT
                          21             VERT CENT
                          22               VERT SIZE
                          23               SHIPPING
                          24              INST. LOCK
                          25               LKB LOCK                     HOTEL
                          26              AV1 START                    FUNCTION
                          27               MAX. VOL
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/OPTION2/OPTION3 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;

                                                         -12-
                                                                          CP-855F Service Manual

3.3.1 OPTION 1




3.3.2 OPTION 2




3.3.3 OPTION 3




                                          Beam Current(mA)
                  Tube                                                    B2      B1      B0
                                           Nominal     Max
   4/3 - Real Flat, 16/9 



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