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SRT2232X service manual
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56 pages, 2.65 Mb
32" COLOR TELEVISION
SRT2232X
SERVICE MANUAL
Contents
Main
IMPORTANT SAFETY NOTICE
TABLE OF CONTENTS
SPECIFICATIONS
<TUNER>
<DEFLECTION>
<VIDEO & CHROMA>
<AUDIO>
IMPORTANT SAFETY PRECAUTIONS
Safety Precautions for TV Circuit
+
_
EARTH GROUND
Page
Precautions during Servicing
Safety Check after Servicing
1. Clearance Distance
2. Leakage Current Test
STANDARD NOTES FOR SERVICING
Circuit Board Indications
How to Remove / Install Flat Pack-IC
1. Removal
Caution:
Page
2. Installation
Instructions for Handling Semiconductors
1. Ground for Human Body
<Correct>
2. Ground for Workbench
Example :
CABINET DISASSEMBLY INSTRUCTIONS
1. Disassembly Flowchart
2. Disassembly Method
Reference Notes in the Table
[1] Rear Cabinet [2] CRT CBA [3] Main CBA [4] CRT
Page
TV Cable Wiring Diagram
Fig. 5
4-3 L6650DC
ELECTRICAL ADJUSTMENT INSTRUCTIONS
Test Equipment Required
How to make Service remote control unit:
How to set up the service mode:
Service mode:
2. Initial Setti ng
3. AV Memory Setting data
4. Setting for BRIGHT, CONTRAST, COLOR, TINT and SHARPNESS data Values
5. Black Stretch Control Adjustment
6. Purity Check
7. SD Check Mode
SD Check mode (Factory mode)
8. H. Position Adjustment
9. V. Size Adjustment
10. V. Position Adjustment
11. U-Pedestal Adjustment
12. V-Pedestal Adjustment
13. Software Reset
14. H. Size Adjustment
15. PIN Cushion Adjustment
16. Cut-off Adjustment
17. White Balance Adjustment
Color Analyzer Fig. 3
18. Sub-Brightness Adjustment
19. Focus Adjustment
20. Purity Adjustment
White Black Fig. 4
This bar just visible
21. Convergence Adjustment
Fig. 6
C.B. MAGNET (RB-G)
Fig. 8
L6650BLS
BLOCK DIAGRAMS
6-1 6-2
System Control Block Diagram
MAIN CBA
L6650BLIF6-3 6-4
IF/Video Block Diagram
MAIN CBA
VIDEO SIGNALRF/IF SIGNAL AUDIO SIGNAL
Audio Block Diagram
MAIN CBA
AUDIO SIGNAL
6-5 6-6
SIF
CRT/H.V. Block Diagram
MAIN CBA
CRT CBA
VIDEO SIGNAL
6-7 6-8
HOT COLD
MAIN CBA
NOTE : The voltage for parts in hot circuit is measured using hot GND as a common terminal.
TP601
Q674
SCHEMATIC DIAGRAMS / CBA'S AND TEST POINTS
Standard Notes
Note:
Note of Capacitors:
Temperature Characteristics of Capacitors are noted with the following:
LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES:
Page
Page
Page
Page
Main CBA T op View
4A/125V
7-11 BL6650F01011-1
7-12
Main CBA Bottom View
CRT CBA Top View CRT CBA Bottom View
WAVEFORMS
WIRING DIAGRAM
CRT CBA
MAIN CBA BL6650F01011-1
9-1 L6650WI
BL6650F01011-2
IC PIN FUNCTIONS
IC333 (TV Micro Computer)
Page
V501
PB6 PB6
EXPLODED VIEWS
Cabinet
Packing
11-3 L6250PEX
MECHANICAL PARTS LIST
Table 1 (V501 and DY551 Combination)
CRT Type No.
CRT
CRT Warning Label Location
ELECTRICAL PARTS LIST
MAIN CBA
MMA CBA
CAPACITORS
20030303 13-2 L6650EL
20030303 13-3 L6650EL
20030303 13-4 L6650EL
CONNECTORS
DIODES
20030303 13-5 L6650EL
ICS
COILS
20030303 13-6 L6650EL
TRANSISTORS
Ref. No. Description Part No.
20030303 13-7 L6650EL
RESISTORS
20030303 13-8 L6650EL
20030303 13-9 L6650EL
20030303 13-10 L6650EL
SWITCHES
CRT CBA
20030303 13-11 L6650EL
MISCELLANEOUS
CAPACITORS
20030303 13-12 L6650EL
CONNECTORS
DIODES
COILS
TRANSISTORS