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COLOR MONITOR
CSH7839L
(SyncMaster 700p )
CSH9839L
(SyncMaster 900p)
SERVICE Manual
COLOR MONITOR CONTENTS
1. Precautions
2. Reference Information
3. Product Specifications
4. Operating Instructions
5. Disassembly & Reassembly
6. Alignment & Adjustments
7. Troubleshooting
8. Exploded View & Parts List
9. Electrical Parts List
10. Block Diagram
11. PCB Diagrams
12. Wiring Diagram
13. Schematic Diagrams
13 Schematic Diagrams
13-1 Power Part Schematic Diagram
13-1 CSH7839L/CSH9839L
13 Schematic Diagrams
1 544 V (IC601, #1) 2 56.4 V (T601, #7)
CH1 P-P = 544 V CH1 RMS = 332.4 V CH1 P-P = 56.4 V CH1 RMS = 9.18 V
CSH7839L/CSH9839L 13-2
13 Schematic Diagrams
13-2 Micom & H/V Process Part Schematic Diagram
13-3 CSH7839L/CSH9839L
13 Schematic Diagrams
Table 13-1. IC201 (ST72E75_3) 3 3.42 V (IC201, #33) 4 3.16 V (IC201, #32) 5 12.08 V (Q253, Base) 6 2.20 V (IC251, #15)
pin # MODES MODES
pin #
31 kHz 69 kHz 96 kHz 31 kHz 69 kHz 96 kHz
1 0.239 0.238 0.241 22 3.65 3.39 3.36
2 0.210 0.210 0.212 23 GND GND GND
3 1.875 1.871 1.876 24 3.96 0.337 4.17
CH1 P-P = 3.42 V CH1 RMS = 2.500 V CH1 P-P = 3.16 V CH1 RMS = 2.560 V CH1 P-P = 12.08 V CH1 RMS = 7.396 V CH1 P-P = 2.20 V CH1 RMS = 2.776 V
4 2.111 3.34 3.88 25 5.05 5.05 5.05
5 1.833 1.830 1.835 26 Low Low Low
6