Pioneer EFX-500 Service Manual page 14

1
EFX-500
3.4 MAIN (3/3), REG, TRANS and POWER BOARD ASSY
A
CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF
FIRE. REPLACE ONLY WITH SAM ETYPE NO.ICP-N5
MFD. BY ROHM CO.,LTD FOR IC92
A
1/3 - 2/3
14
A
1/3
A
B
3/3
MAIN BOARD ASSY
(3/3)
(DWX1907)
IC11 (PQ05PR12)
Voltage [ V ]
No.
1 8.40
2 4.98
B
REG BOARD ASSY
C
(DWX1910)
D
A B
3/3
14
1
2
CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF
FIRE. REPLACE ONLY WITH SAME TYPE NO.IC-N10
MFD. BY ROHM CO.,LTD FOR IC95
15
A
1/3 - 2/3
15
Voltage [ V ]
No.
3 0
4 4.97
CABLE HOLDER
2
3
CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF
FIRE. REPLACE ONLY WITH SAME TYPE NO.ICP-N38
MFD. BY ROHM CO.,LTD FOR IC93 AND IC94.
EARTH METAL FITTIN
VNF1084
Q1- Emitter
14
V : 20mV/div. H : 0.2mS/div.
VLED
GLED
IC12- 3pin(V+BV), IC13- 2pin(V-BV)
15
V : 2V/div. H : 20mS/div.
IC12
3pin (V+B)
IC13
2pin (V-B)
3
4
GND
GND
GND
4