Power Supply Unit - Pioneer KRP-500P Service Manual

1

4.5 POWER SUPPLY UNIT

A
POWER SUPPLY UNIT
P2
VADR
+17V
+6.5V
VSUS
B
P1
VADR
+17V
+6.5V
VSUS
P6
+12V
+6.5V
STB5.1V
Q103,
Q104
P5
+17V
C
P9
+12V
+6.5V
P7
M_SW_DET
STB3.4V
+17V
AC_DET
P4
D
DRF_SW_B
M_SW_DET
EXT_PD
VSUS_ADJ
PS_PD
RELAY
DRF_B
AC_DET
PD_TRIG_B
E
F
28
1
2
PRIMARY
SECONDARY
T301, T302
T401
+17V
T501
+12V
+6.5V
Q505
T101
Q105,
Q106
+B for
RELAY DRIVE
RY002
P8
KRP-500P
2
3
Switching
Q301
Switching
PFC Q007
Q009
Q302
Q012
+390V
Switching
Q013
Q402
Switching
Q403
D007,D018
Switching
IC501
IC101
Switching
D025,D026
D002,D017
3
4
D005,
D006,
D008
NEUTRAL
LIVE
F001
P3
4