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Service Manual - Page 1
Reference Information 3. Specifications 4. Disassembly and Reassembly 5. Alignment and Adjustments 6. Troubleshooting 7. Schematic Diagrams Block Diagrams 10. Wiring Diagram 12. Exploded Views and Parts List 8. 0
COLOR TELEVISION RECEIVER
CHASSIS: APT51B
MODEL: SP431JX
SP521JX
PCH521R
SERVICE Manual
PROJECTION TV RECEIVER
CONTENTS 1. PCB Layout 11. Electric Parts List 9....
Service Manual - Page 3
...serviced only if the AC power plug is inserted so that the AC power plug is rated for safety are equipped with parts that are electrically separated by its polarity and reinsert. Samsung...specifications. Never handle the picture tube by insulating material that the replacement picture tube is maintained within specified limits by shading, (A) or (A). do not touch thermally hot parts....
Service Manual - Page 4
...the AC plug and accessible conductive parts (see above the printed circuit board for Electrostatically Sensitive Devices (ESDs)
...
7. Minimize body motions when handling
unpackaged replacement ESDs. Samsung Electronics
I.3 An insulation tube or tape is...electrical charge to applying power--this manual. After servicing, always check that are correctly installed.
8. Use only a grounded-tip...
Service Manual - Page 5
...
Samsung Electronics
Remarks CONVERGENCE BOARD POWER BLOCK POWER BLOCK
CONVERGENCE BOARD
MDS MODULE MAIN IF/MTS MODULE IF/MTS MODULE DEFLECTION BLOCK DEFLECTION BLOCK PEAKING MODULE
CRT-PCB PART
MAIN MAIN MAIN MAIN D-COMB MODULE D-COMB MODULE
2-1 HC651
1
Specification STK4142-II
Table 2-1 IC Summary Description
AUDIO AMP
HC801 HC802
2
STR-S6709 SWITCHING REGULATOR
HC851
3
SE130N
ERROR...
Service Manual - Page 6
No. Specification
Table 2-1 IC Summary (Continued) Description
ICS03
19
TDA8540 VIDEO SWITCHING IC
ICSO4
20
µPC1853CT SURROUND & VOLUME CONTROL IC
ICZ01
21
MC4558C IC-DUAL OP AMP
ICZ02 ICZO3
22
74HC123AP IC-CMOS LOGIC
Remarks AUDIO MODULE AUDIO MODULE CONVERGENCE BOARD
CONVERGENCE BOARD
P-2
Samsung Electronics Reference Information
Loc No.
Service Manual - Page 7
...
63 Kg
75 Kg
152g (Including Batteries)
Specifications are subject to change.
Specifications
MODEL
TUNING
SYSTEM
COLOUR
SOUND
ANTENNA IMPEDANCE
SCREEN SIZE
CONSUMPTION
POWER
REQUIREMENTS
FREQUENCY
TUNING RANGE
SOUND OUTPUT
DIMENSIONS SET
(W x Dx H)
TRANSMITTER
WEIGHT
SET
TRANSMITTER
SPT431J
SPT521J/PCH521R
Frequency Synthesizer
NTSC3.58
Sound Multiplex System
75...
Service Manual - Page 15
...H-SIZE H-COMP PIN-AMP TOP-PIN BOT-PIN TILT V-BOW V-ANGLE G2-ADJ
AFC V-SYNEX AKB-REF 62-SW G2-SET G-DRIVE B-DRIVE G-BIAS B-BIAS S-CONT S-TINT S-COLOR
S-BRIT S-SHARP GAMMA D-PICT DC-IRAN
ABL R-Y/R R-Y/B G-Y/R ... 00 - 03 00 - 63 00 - 03 00 - 07 00 - 03
Initial Value
SPT431J
SPT521J/PCH521R
25
25
27
27
00
00
08
08
15
15
18
18
42
42
00
00
09
09
15...07
07
00
00
Samsung Electronics
Service Manual - Page 17
...set at least for a video level of the screen.
8. Select G-DRIVE and B-DRIVE using a receiver
(Video = No signal). 3. Input a PHILIPS pattern (70dB or higher). 2. Select Channel UP/DOWN keys. 3. Connect the scope for 30 minutes.
5. Press the ADD button.
5-4
Samsung... dark part of 1.8Vp-p.
5-2-3 Screen Adjustment
1. Adjust high-light while checking the bright part of ...
Service Manual - Page 18
...board. ADJUSTMENT
1. Cover the lenses that the multimeter indicates 125VDC. (Input the lion head pattern signal)
Alignment and Adjustments
5-3-2 Failsafe Adjustment
1. ADJUSTMENT
1. Loosen the lens screws.
2. The TV remains in 30 seconds.
5-4 Convergence... least for 10 minutes. 4. Failsafe adjustment is necessary whenever servicing is working properly.
5. Turn power switch ON and select ...
Service Manual - Page 19
...a crosshatch pattern. 3. Balance the left and right sides together
5-6
Samsung Electronics Select STANDARD video mode. 2. Green lens adjustment: Set the lens at the point where Orange becomes Crimson.
7. Examine the... Red. ADJUSTMENT Vary the focus pack VR (Red, Blue) on the convergence board). Blue lens adjustment: Set the lens at the point where Purple becomes Green.
[LI
LI
L2
...
Service Manual - Page 20
...(See the diagram below )
2V t END
2. After removing the static convergence connector CNZO3 from the convergence AMP board, select G-Mute and B-Mute. After 1-5 adjustments are completed, display Red... Convergence Adjustment is completed, press the Save key.
12. Samsung Electronics
5-7 Press the B-Mute key.
13. After the adjustments are completed, begin the convergence adjustments...
Service Manual - Page 21
...Servicing
Cursor Reverse (Press to move the cursor left or up)
Cursor Move (Press to move the cursor right or down)
Cursor Direction Select Button (Press to turn the cursor horizontal or vertical)
Press for the Green Mute Press for the Red Mute Press for the Blue Mute Initial Data
(Before convergence... mode convergence adjustemnts are completed,press to save data
5-8
Samsung Electronics Picture...
Service Manual - Page 23
Alignment and Adjustments
5-4-9 Convergence Adjustment Manual 5-4-10(a) FUNCTION
1. Convergence Picture Move Button Use the Channel and Volume keys to... cursor move the cursor. (Continuous, Normal) The pattern looks like this sequence: Mute - 1 - 8 - 3.
2. Convergence Mode Display the test pattern by pressing it in this :
(7 V(
128 step 128 step
< HORIZONTAL >
"128 '128
step
step
< VERTICAL ...
Service Manual - Page 25
... CNZO
Abnormal
Check the Differential Amplifier ofeach Convergence terminal
After checking the 26V load line, check/Replace the Fuse F854, F855
Replace the Convergence
Module
Check the circuit connected to each terminal
Samsung Electronics
6-1 Troubleshooting
6-1 Protector
Note : When the vertical and horizontal deflection circuits do not operate, the TV set will be switched off while HV...
Service Manual - Page 26
...Troubleshooting
6-3 No Picture (Raster and Sound Ok)
Note : When Sound Control IC and Video/Audio Switching IC (IC701) are abnormal, the detective IC can be identified (on SCREEN) by , press Mute-0-.8-4-)Power On
eys and Check OS
Abnormal
Normal
fter Power OFF, turn the TV set...;
Check 1C201 Peripheral Circuits
•
Check IC701 and AN Module Peripheral Circuits
6-2
Samsung Electronics
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