Pioneer SC-99 Service Manual page 38

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1
Fan Abnormality Detection
W
A
IR REG_M ASSY
B
+12.5V
Q7205
DTA124EUA
GND_MD_2
Q7204
DTC124EUA
Q7207
DTC124EUA
-12.7V
C
D
AF
DISPLAY BRIDGE ASSY
CN7903
CN7902
-13
-3
E
L
DISPLAY ASSY
V+5V_VDD
R6092
28
100
UCOM
IC6001
F
38
1
2
FANCTLL
FANCTLH
DTA124EUA
!
Q7211
2SD2400A
D7220
1SS355
Q7212
!
2SB1569A
G
DIGITAL MAIN ASSY
CN601
-37
R691 100
R805 10
CN6001
R688 100
R804 10
-27
UCOM
IC603
GND D
2
3
Q7224
V+8_MD
DTC124EUA
Q7223
D7215
1SR154-400
DTC124EUA
Q7225
Q7222
DTA143EUA
D7216
1SR154-400
D7221
R7221
Q7221
DTC124EUA
NM
22k
Q7226
DTC124EUA
AE
Z
FB CONNECT ASSY
H
INTERFACE_M ASSY
CN603
CN7952
CN7953
CN7003
-25
-25
-1
-1
-23
-23
-3
-3
-24
-24
-2
-2
Y
CONNECT_M ASSY
SC-99
3
4
Power Supply for
COOLING FAN
CN7281
-1
-2
-3
V+FAN
C7294
V-FAN
470p/50
LOCK DET
CH
C7222
470p/50
CH
R7223
3216
NM
FAN
V+FAN
V-FAN
OFF
0V
0V
LOW
-0.7V
-6.5V
HIGH
+6.5V
-6.5V
FRONT BRIDGE ASSY
CN7007
CN7682
CN7684
CN7722
-1
-1
-17
-17
-2
-2
-16
-16
-3
-3
-15
-15
4
XFANERR
FANCTLL
FANCTLH
CN7723
-1
XFANERR
FANCTLH
-3
-2
FANCTLL

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