Circuit Description - NEC MultiSync LCD1550ME Service Manual

CIRCUIT DESCRIPTION

TABLE OF CONTENTS
1. Audio circuit ----------------------------------------------------------------------------------------- 7-2
1.1 Audio input
1.2 Audio output -----------------------------------------------------------------------------------
2. Power supply
3. On-screen circuit ---------------------------------------------------------------------------------
4. Video input circuit --------------------------------------------------------------------------------
5. Definition converter LSI peripheral circuit
6. System reset, LED control circuit
6.1 System reset
6.2 LED control circuit
2
7. E PROM for PnP
2
8. E PROM
9. CPU circuit
9.1 Detection of POWER switch status --------------------------------------------------------
9.2 Display mode identification
9.3 User Control
9.4 Control of definition converter MCU I306
2
9.5 I C bus control
9.6 Power ON sequence
9.7 Power OFF sequence
10. Inverter
10.1 Circuit Diagram
10.2 Inverter basic function ----------------------------------------------------------------------- 7-9
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7-1
Page
7-2
7-2
7-2
7-3
7-3
7-3
7-4
7-4
7-4
7-4
7-4
7-4
7-4
7-4
7-6
7-6