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General Information; Diagnosis; Operation Sequence Flow - Pioneer PDP-42A3HD Service Manual

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7. GENERAL INFORMATION

7.1 DIAGNOSIS

7.1.1 OPERATION SEQUENCE FLOW

A
Operation sequence flow (Power on –> Display on)
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C
D
E
F
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SMPS Power 7V on
Micom basic c heck
OK
po wer sign al
high( JP730)
SMPS Power High
A12VCC, A6VCC, 12VCC
3V3VCC, 2 V5VCC
Micom uploads source
progra m to S DRAM(U31)
from f lashrom(U28)
Micom reads the EEPROM
data in U 32
Mic om communicates
con nect ed IC
Mic om set the IC register
in last stored
EEPROM settings.
Each IC com munica tes
con nect ed IC.
Scaler IC(ASI510)
out puts OSD and
Video siganl
LVDS Transmitter
transf er LVDS signal
to PDP Modu le
Module Dig ital Board
con verter LVDS signal
to TTL s igna l
Module display
on
PDP-42A3HD
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3
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