NEC MultiSync LCD1700NX A Service Manual page 92

CIRCUIT DESCRIPTION
TABLE OF CONTENTS
1. Power Supply --------------------------------------------------------------------------------------- 7-2
2. Video Input Circuit --------------------------------------------------------------------------------- 7-2
3. Definition Converter LSI Peripheral Circuit -------------------------------------------------- 7-2
4. System Reset, LED Control Circuit ------------------------------------------------------------ 7-2
4.1 System Reset ------------------------------------------------------------------------------------- 7-2
4.2 LED Control Circuit ------------------------------------------------------------------------------ 7-2
2
5. E PROM for PnP ----------------------------------------------------------------------------------- 7-3
2
6. E PROM --------------------------------------------------------------------------------------------- 7-3
7. CPU Circuit ------------------------------------------------------------------------------------------ 7-3
7.1 Detection of POWER Switch Status --------------------------------------------------------- 7-3
7.2 Display Mode Identification -------------------------------------------------------------------- 7-3
7.3 User Control --------------------------------------------------------------------------------------- 7-5
7.4 Control of Definition Converter gm5020 (I315) -------------------------------------------- 7-5
2
7.5 I C Bus Control ----------------------------------------------------------------------------------- 7-5
7.6 Power ON Sequence ---------------------------------------------------------------------------- 7-6
7.7 Power OFF Sequence -------------------------------------------------------------------------- 7-6
7.8 List of CPU Pin Assignments ------------------------------------------------------------------ 7-7
7-1
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