Processing In Abnormality - Pioneer PDP-4270XA Service Manual

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10.6 PROCESSING IN ABNORMALITY

A
Speaker short-circuit
Circuit diagram
AUDIO Assy
B
Specifications for port monitoring
Port Name SD/PD Indication Assigned Pin
A_NG_B AUDIO
Power supply and DC-DC converter
C
Circuit diagram
POWER SUPPLY Unit
SW_REG
POWER
SW
D
MODULE_Ucom
DIGITAL ASSY
Specifications for port monitoring
Port Name SD/PD Indication Assigned Pin
E
RST2 ASIC power
RST3 AC power
RST4 MAIN power
F
168
1
2
A_NG_B
POWER
AMP IC
Shutdown with L
V+3.3V_UCOM
V+5.1V
RELAY
Shutdown with L
AC_OFF with H
Shutdown with L
2
3
MAIN Assy
V+12V
PULL_U
A_NG_B
PULL_D
Active
MAIN Assy
Inverter
V+12V
PULL_U
V+3.3V_D
PULL_D
PULL_U
DC/DC Converter
Active
PDP-427XD
3
4
MAIN_UCOM
MAIN_UCOM IF_UCOM
RST3
AC shutdown
detection
RST4
Voltage
detection
Startup
Main ucom
ACTIVE
RST2
Voltage
detection
PSW1
DC_DC Converter
output control
Command
PON/POFF
Command
4