Service manual

CP-850FX Service Manual
Europe R&D
4
5.10.2.4 Cancellation of OLP Circuit.......................................................................................69
5.10.3 FB Terminal (Pin. 6)...................................................................................................70
5.10.3.1 Constant Voltage Control Circuit.............................................................................70
5.10.4 OCP/BD Terminal (Pin 7)...........................................................................................71
8.4.1. Minus-Detection Type OCP Circuit .............................................................................71
5.10.5 Quasi-Resonant and Bottom-Skip Operation.............................................................72
5.10. 5. 1 Quasi-Resonant Operation.....................................................................................72
5.10.5.2 Bottom-Skip Operation (Switching from Quasi-Resonant Operation) .....................73
1). Quasi-Resonant Operation ⇒ Bottom-Skip Operation.............................................73
2). Bottom-Skip Operation ⇒ Quasi-Resonant Operation ...............................................73
5.10.6 Stand-By Operation ...................................................................................................74
5.10.7 Step-Drive Circuit.......................................................................................................76
5.10.8 Maximum ON Time Controlling Function ...................................................................76
6 SERVICE PARTS LIST ........................................................................................................77
6.1 DTF-2950..........................................................................................................................77
7 EXPLODED VIEW................................................................................................................85
7.1 DTF-2950..........................................................................................................................85
8 PRINTED CIRCUIT BOARD.................................................................................................86
8.1 MAIN PCB.........................................................................................................................86
8.2 UNION PCB .............................................................................................................................87
8.3 CRT PCB ..........................................................................................................................88
9 SCHEMATIC DIAGRAM.......................................................................................................89
9.1 MAIN.................................................................................................................................89
9.2 UNION & CRT...................................................................................................................90
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