Explanation; Processing In Abnormality - Pioneer PRO-R04U Service Manual

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7.2 EXPLANATION

7.2.1 PROCESSING IN ABNORMALITY

Power supply and DC-DC converter
Circuit diagram
POWER SUPPLY Unit
PD_TRG
6.5V 12V
UV_DET UV_DET
SW_REG
Specifications for port monitoring
Port Name SD/PD Indication Assigned Pin
PD_MAIN (PD_TRG) MR_PWR
PD_DCDC1 ASIC power supply
RST2 ASIC power supply
Fan and temperature sensor
Circuit diagram
FRONT Assy
TEMP2
SENSOR
FAN_12V
Specifications for port monitoring
Port Name SD/PD Indication Assigned Pin
FAN_NG FAN
TEMP2 Abnormally high
temperature in the
MR
5
6
AV BOARD Assy
V+3V_DD V+1V_DD
0V_DET 0V_DET
V+12V
DC/DC Converter
38 Power-down with H
43 Shutdown with L
98 Shutdown with L
BRIDGE Assy
V+3V_COM
PULL_U
Drive Circuit
31 Shutdown with H
50 Shutdown when the
value exceeds the
predetermined value
6
7
MR MAIN BOARD Assy
V+3V_DD
PULL_U
L_act
V+3V_DD
RST_IC
L_act
V+1V_DD
RST_IC
Active
MR MAIN BOARD Assy
TEMP2
Active
PDP-R04U
7
8
PD_TRG (H_act)
PD_DCDC1 (L_act)
MAIN_UCOM
RST2 (L_act)
PSW1 (L_act)
POWER (H_act)
V+3V_COM
PULL_U
MAIN_UCOM
FAN_CONT
FAN_NG (H_act)
8
A
B
C
D
E
F
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