Explanation; Processing In Abnormality - Pioneer PDP-R05U Service Manual

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7.2 EXPLANATION

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7.2.1 PROCESSING IN ABNORMALITY

3 7 63 1515 0
Power supply and DC-DC converter
Circuit diagram
POWER SUPPLY Unit
6.5V
UV_DET UV_DET
SW_REG
Specifications for port monitoring
Port Name
PD_MAIN (PD_TRG) MR_PWR
RST2
TE
L 13942296513
Fan and temperature sensor
Circuit diagram
SENSOR
(DIGITAL TUNER FAN)
Specifications for port monitoring
Port Name
FAN_NG 1
www
FAN_NG 2
.
TEMP2
5
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AV BOARD Assy
PD_TRG
12V
V+12V
DC/DC Converter
SD/PD Indication Assigned Pin
41
ASIC power supply 98
TEMP2
FAN_12V
Drive Circuit
SD/PD Indication Assigned Pin
FAN 31
FAN 32
x ao
y
i
Abnormally high 50
temperature in the
MR
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6
8
L_act
L_act
Active
Power-down with H
Shutdown with L
Q Q
3 6 7 1 3
MR MAIN BOARD Assy
TEMP2
V+3V_COM V+3V_COM
PULL_U
PULL_U
Active
Shutdown with H
Shutdown with H
u163
.
Shutdown when the
value exceeds the
predetermined value
PDP-R05U
6
7
2 9 9 4 2 8
MR MAIN BOARD Assy
RST3 (H_act)
V+3V_DD
RST_IC
RST2 (L_act)
V+1V_DD
RST_IC
PSW1 (L_act)
RELAY (H_act)
1 5 0 5 8 2 9 9 4
V+3V_COM
PULL_U
MAIN_UCOM
FAN_CONT
FAN_NG1 (H_act)
FAN_NG2 (H_act)
m
co
7
8
9 9
A
MAIN_UCOM
B
C
2 8 9 9
D
E
F
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