NEC PX-50XM4 series Service Manual page 533

■CPU
1. Basic configuration diagram
Loop out SW
Video SW
Video/sync
SW
AUDIO control
PCB-5042H/ AUDIO PWB
POWER unit
PCB-5042D/ LED PWB
LED
PCB-5042B/ CTL PWB
KEY control
PCB-5042E/ SENB PWB
TEMP IC control
PCB-5042F/ SENC PWB
PCB-5042G/ SEND PWB
REMOTE CONTROLL
PCB-5042A / 232C PWB
RS232C control
RESET IC
RTC IC
3.3V detect
• PX-50XM4/61XM3 only for the gray block
• PX-*****A only for the CCD PWB
Extension
Port IC
ALARM
PCB-5040 / MAIN PWB : PX-50XM4/61XM3
PCB-5041 / MAIN PWB : PX-50XR4/61XR3
ALARM
ALARM
CPU
CONFIDENTIAL
FAN control
PCB-5044/ CCD PWB
CCD IC
Mix PLD
Module
OSD IC
E2PROM
Digital signal Processing block1
LPF1
I-P converter/Scaling
γ correction
LPF2
Double pic processing
A/D1
Digital signal Processing block2
I-P converter/Scaling
γ correction
A/D2
Double pic processing
Video chroma Decoder
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