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1
3
4
5
7
A-S2000
6
50
CB26
CB21
W304B
IC302
IC300
IC303
IC301
CB22
CB24
W303B
W303D
W303C
W303A
W314
W316
W304A
W304C
W304D
W317
W318
W315
(Side A)
MAIN (3) P.C.B.
FUNCTION (3)
(CB25)
PSVA1
Blue
RED
Black
RED
Brown
Black
Red
+B3
-B3
BE
BL
PSVA2
MG
+5M
PRV
POWER TRANSFORMER
POWER TRANSFORMER
POWER TRANSFORMER
White
Vioret
Red
Black
Brown
Blue
Vioret
POWER TRANSFORMER
MAIN (2)
(CB52)
HP GND
HP GND
HP GND
MAIN (2)
(CB72)
+PB
-PB
AGND
AGND
MAIN (1)
(CB52)
+PB
PRV
+33V
-33V
AGND
60GND
-PB
AGND
AGND
FRONT (11)
(CB34)
-B1
+B1
BL
BE
+B4
-B4
GY
BR
-B2
+B2
BR
GY
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
5 k-ohms
10 W
D332 D4
D333 D3
D334 D3
D335 D5
D336 D4
D337 G3
D338 G3
D339 G4
D340 G4
D341 D3
D342 D3
D343 D4
D344 D4
IC300 F3
IC301 G3
IC302 F4
IC303 F5
Q303 F3
Ref no. Location Ref no. Location
D300 H3
D301 H4
D302 G3
D303 G3
D304 D5
D305 H5
D307 G4
D308 G4
D311 G3
D312 G3
D313 G4
D314 G4
D315 F3
D325 D3
D326 D3
D327 D4
D328 D4
D331 D4
Safety measures
• Some internal parts in this product contain high voltages and are dangerous. Be sure to take safety measures during servicing, such
as wearing insulating gloves.
• Note that positions indicated below are dangerous even after the power is turned off because an electric charge remains and a high
voltage continues to exist there. Before starting any repair work, perform discharge by connecting a discharge resistor (5k-ohms/
10W) between terminals at following positions. The time required for discharging is about 30 seconds.
1. C308 on MAIN (3) P.C.B..
2. C309 on MAIN (3) P.C.B..
3. C335 on MAIN (3) P.C.B..
4. C336 on MAIN (3) P.C.B..
• Semiconductor Location