Service Manuals, User Guides, Schematic Diagrams or docs for : Samsung TV SPM4388PF
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Block Diagrams
10. Block Diagrams
SIGNAL PART
SPEAKER R
AUDIO AMP LNA RF TUNER IF MODULE AUDIO MODULE
SPEAKER L
R-CONV.AMP
H-BLK R-CY
DIGITAL PEAKING PICTURE BOOST
RF
CONVERGENCE G-CONV.AMP TUNER
V-BLK G-CY
_ 5.7V
+ MODULE (PIP) R,G,B VIDEO
B-CONV.AMP PROCESSOR
B-CY CTI/Y-DELAY
PIP MODULE R-DRIVE R CRT
H-PARA H/V-PARA DYNAMIC FOCUS
SUM OUTPUT FOCUS 1H DELAY TTX MODULE
V-PARA PACK m-COM G-DRIVE G CRT
CONVERGENCE PART
B-DRIVE B CRT
SMPS PART E2PROM
STR MAIN RECTIFI- EXTERNAL EXTERNAL A/V MULTI DECODER
S6709 TRANS CATION DEFL &
SIGNAL A/V INPUT SWITCHING BLOCK
PHOTO COUPLER ERROR AMP
D.Y
VERTICAL
STR SUB RECTIFI- DEFL PART
S6709 TRANS CATION CONV. & V-AMP & E/W CORRECTION CRT
SOUND HIGH VOLTAGE
BRIDGE PHOTO COUPLER ERROR AMP
RECTIFI- HIGH VOLTAGE HIGH VOLTAGE SCREEN
CATION FBT
DRIVE OUTPUT TR
DUMMY D.Y
D.Y
HORIZONTAL HORIZONTAL HORIZONTAL
DRIVE OUTPUT TR DUMMY FBT
Samsung Electronics 10-1
Schematic Diagrams
12. Schematic Diagrams
12-1 SIGNAL (MICOM,TTX, B+ , AV-S/W)
TP91
TP92
TP93
TP94
: Power Line
: Signal Line
Samsung Electronics 12-1
Schematic Diagrams
12-2 SIGNAL(PIP-IF, AUDIO-MODULE)
TP4
TP6
TP3
TP2
TP1
TP5
: Power Line
: Signal Line
12-2 Samsung Electronics
Schematic Diagrams
12-3 SIGNAL (VIDEO, CHROMA, PEAKING)
TP22
TP28
TP24
TP25
TP27
TP26
TP23
TP21
: Power Line
: Signal Line
Samsung Electronics 12-3
Schematic Diagrams
12-4 SIGNAL (CONV, KARAOKE, COMB-PART)
TP30
TP29
TP32
TP31
: Power Line
: Signal Line
12-4 Samsung Electronics
Schematic Diagrams
12-5 P0WER
TP83
TP81
TP82
TP84
TP87
TP86
TP85
: Power Line
: Signal Line
Samsung Electronics 12-5
Schematic Diagrams
12-6 DEFL
TP39
TP38
TP42
TP37
TP43
TP41
: Power Line
: Signal Line
TP44
12-6 Samsung Electronics
Schematic Diagrams
12-7 CONVER.
TP62
TP61
TP70
TP71
TP69 TP64
TP63
TP68
TP66
TP67
TP65
: Power Line
: Signal Line
Samsung Electronics 12-7
Schematic Diagrams
12-8 CRT
TP51
TP53
TP52
TP54
TP55
TP56
TP57
12-8 Samsung Electronics
Schematic Diagrams
12-9 PWB-PIP
: Power Line
: Signal Line
Samsung Electronics 12-9
Schematic Diagrams
12-10 AUDIO-MODULE
: Power Line
: Signal Line
12-10 Samsung Electronics
Schematic Diagrams
12-11 IF
: Power Line
: Signal Line
Samsung Electronics 12-11
Schematic Diagrams
12-12 TTX
: Power Line
: Signal Line
12-12 Samsung Electronics
Schematic Diagrams
12-13 CONTROL-JACK-A, CONTROL-DOOR,PRE-AMP
: Power Line
: Signal Line
Samsung Electronics 12-13
Schematic Diagrams
12-14 A/V-SWITCHING
TP34
TP33
TP35 TP36
12-14 Samsung Electronics
Schematic Diagrams
12-15 MIC.MASTER S/W
Samsung Electronics 12-15
Schematic Diagrams
TP13
TP12
TP11
TP14
TP15
TP16
TP17
TP18
12-16 Samsung Electronics
Wiring Diagram
11. Wiring Diagram
CTRL-MIC
CNE01
CN902
CTRL-DOOR CRTL-JACK CRT-R
H/V
CN802
CN803 POWER
CN503-1 CN503 CN504
CN904 CN901
R
G FOUCS PACK CN801
CN601 CN905
B CONVERGENCE SIGNAL CN201 CRT-G
CN701
H/V
CN203 CN202 CNZ01 CNQ01 CN702 PREAMP CN501
CN502-1 CN502 CN505
LNA CN201 CN202
VM
R
G
CONVG. DEFLECTION
B A/V BACK CRT-B
MODULE
H/V
CN401
FOCUS SCREEN
R, G, B, DY CNH01
Samsung Electronics 11-1
Troubleshooting
6. Troubleshooting
6-1 No Power
Abnormal 0V Check CN801 Pin 2 Normal 12V
(STB B + ).
Abnormal Normal 3V 0V
Check C801 Check the voltage
on CN801 Pin 1
Check/Replace Check/Replace Normal Abnormal Check IC901
D808 & R801 Check F851.
HC801 (VCC)
Check/Replace
Q401 and Q402
Replace F854
Normal 0V Check the base voltage Abnormal 0.6V
on Q852
Check/Replace Check/Replace
Q851 and Q852. Q854.
Normal
Abnormal
Check IC901 Replace IC901
Peripheral Circuits
Samsung Electronics 6-1
Troubleshooting
6-2 No Picture
Check TDA4780 Normal
(IC203) Pin 1, Pin 13
Low-High
Check/Replace
Abnormal m-com (IC901
Check TDA9160 (IC202) Abnormal
Y-output (Pin 1)
Replace
Normal TDA9160 (IC202)
Check TDA4780 Abnormal
Y-input (Pin 8)
Check/Replace
Normal IC203
Check Pin 8 of IC501,
IC502, IC503
6-2 Samsung Electronics
Troubleshooting
6-3 No Sound
Normal (_28V)
+ Abnormal (0V)
Check pins 9 and 11
of HC651
Check D859,D860,
Check the Pin 5 Abnormal
of the CN601(mute) F852, F853 on the SMPS
Check/Replace RL651
Normal and m-com (IC901
Check pins 3 and 5 of Normal
the Audio module
Abnormal
Check/Replace Abnormal Check pins 24 and 22
upc1853 (IC602) of the Audio mdl
Check/Replace KA2192, Normal
TC4053BP on the A/V switch
Abnormal Check pins 16 and 18 Normal
of the audio mdl
Check/Replace Check/Replace
TDA9840 IC601
Samsung Electronics 6-3
Troubleshooting
6-4 Horizontal Line
Normal Check the Waveform of Abnormal
IC202 Pin 15,16
Check IC301 and its Check IC202 and its
peripheral circuits peripherial circuits
6-5 Convergence Misaligned
Check
Normal the waveform of each Abnormal
terminal in Convergence Module
CN203
Normal Check the voltage on Abnormal Check the Waveform of Abnormal
Normal
CN803 pins 4,6 each terminal in Convergence
Module CN202
After checking the _ 26V
+ Check the Circuits
Check the Differential Replace the
load line, check/replace Connected to each
Amplifier of each Convergence Module.
the Fuse F854, F855 on terminal of Convergence
Convergence terminal
the SMPS board Module CN202
6-4 Samsung Electronics
5. Alignment and Adjustments
5-1 RF AGC Adjustment 5-4 FBT B+ Voltage Adjustment
1. Tune to the strongest local station. PREPARATION
2. Turn the AGC control fully clockwise (VR111, 1. Note: The B+ voltage adjustment (FBT) is
on the IF board). done during the chassis check at the factory.
Perform this adjustment after Sub-Brightness
3. Adjust the AGC control until noise (snow) and Convergence.
disappears from the screen.
2. Warm up the TV for at least for 10 minutes.
5-2 Screen Adjustment
3. Input 100% white pattern.
1. Turn to the Active channel.
4. Select the "STANDARD" video mode.
2. Adjust the VR (VR501, VR531, VR561) screen
ADJUSTMENT
for a normal picture is (no blooming or flyback
line).
1. Connect the leads of a multimeter to GT405
3. Adjust the FOCUS control for well defined (B+) and GT406(G).
scanning lines in the center area of the screen.
2. Set VR401 (on deflection board) to either
126.9V (for NTSC), or 125.6V (for PAL).
5-3 Horizontal Dynamic Focus
Adjustment
PREPARATION
1. Input a crosshatch pattern.
2. Cover the Red and Blue Lenses.
3. Enter "STANDARD" video mode.
4. Adjust the Green Lens for best focus.
ADJUSTMENT
Adjust VRZ01 (located on the convergence board).
Balance the left and right sides of the dynamic
focus lines.
Fig. 5-1 Balance the left and right sides
Samsung Electronics 5-1
Alignment and Adjustments
5-5 Lens Focus and Static Focus
Adjustment
5-5-1 Static Focus (Electric Focus) 5-5-2 Lens Focus
PREPARATION PREPARATION
1. Select the "STANDARD" video mode. 1. Do this adjustment after the static focus
adjustment .
2. Input a crosshatch pattern.
2. Select the " STANDARD" video mode.
3. Cover the lenses that are not being adjusted. (Contrast: 64, Brightness: 32)
4. Connect a convergence jig and read data. 3. Input a cross hatch pattern.
5. Adjust the lens for best focus. ADJUSTMENT
ADJUSTMENT 1. Loosen the lens screws.
Vary the focus pack VR (Red, Blue) on the front 2. Cover the two lenses that are not being
cabinet. Adjust the TV for best possible focus adjusted.
around the center of the crosshatch pattern,
without losing overall screen balance. 3. Adjust the lens, observing the color aberration
vertically and horizontally within 3 blocks of
the center of the crosshatch pattern.
4. When the lens is turned clockwise, the color
aberration will change as follows:
Lens Color Aberration Change
R Orange --- Crimson
Fig. 5-2 Crosshatch Pattern. Examine these points together G Blue --- Red
B Purple --- Green
5. Green lens adjustment:
Set the lens at the point where Blue just
changes to Red. If the color aberration is
irregular throughout the picture screen,
adjust the lens to show Red within a 3-block
grid around the horizontal center-line.
Observe the the color aberration near the
intersection points of the horizontal and
vertical lines (approximately 1 - 3 mm area).
If the aberration is irregular, adjust the lens as
shown in the diagram below. (Accurate
alignment of Green is important for overall
color quality.)
Fig. 5-3 Color Aberration
6. Set the Red lens at the point where Orange
becomes Crimson.
7. Set the Blue lens at the point where Purple
becomes Green.
5-2 Samsung Electronics
Alignment and Adjustments
5-6 Convergence Adjustment
5-6-1 Convergence Adjustment
1. Input a PAL pattern. 11. Adjust Blue as above.
2. Warm up the set for 30 minutes before 12. After the adjustments are completed, press
adjustment. "Recall" to save the data.
3. Display the test pattern (Crosshatch) by 13. Change from PAL mode to NTSC when
pressing the remote-control keys in this making NTSC adjustments.
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