Panasonic WJ-HDE300 Service Manual page 21

MAIN BOARD (5/5)
V3D
FANSEN
Q524
D D521
3 1
2
D522
3 1
2
DGND
L520
V3D
Q526
R528
1k
Q521
1/4W
FAN12V
+10V
DGND
TD520
V12D
Q522
C
DGND
Q525
D523
V3D
R527
1k
Q520
1/4W
D524
FAN9V
OPEN
+12V
B DGND
V12D TD500
C503 1500p
1 3
2
DGND
IC500
L500
1 2
VIN VOUT
R500
5 4 47
ON/OFF Oadj
10k
GND_1 GND_2
3 6
A
DGND
29
SCHEMATIC DIAGRAM OF MAIN BOARD (5/5)
V12D
V3D
VS520 CN520
TO
1 +12V
COOLING
2 GND
3 S
FAN-1
Attachment1
(MO1)
Attachment2
DGND
V12D
DGND
VS521 CN521
TO
1 +12V
2 GND COOLING
V12D 3 S
FAN-2
Attachment1
(MO2)
Attachment2
DGND
DGND
CN522
VS522
TO
1 +12V
2 GND
COOLING
3 S
FAN-3
Attachment1
(MO3)
Attachment2
DGND
DGND
CN523
VS523
TO
1 +12V
2 GND COOLING
3 S
FAN-4
Attachment1
(MO4)
Attachment2
R540
DGND
OPEN
DGND
CN500
R501
1 +12V
TO
2A 2 +12V
60V V3D AC/DC
3 GND
BOARD
4 GND
5 GND CN3,
6 GND
R505 HDD-DC
FLT2 7 PCNT
R507 10k BOARD
100
8 NC
R508 10k
CN100
9 NC
R509 10k
10 NC
DGND
TD501
+5V
L501
2.2
TD502
+3.3V
IC501
3 4
Vin Vout
Adj
1
DGND
30
R554
RSTI
R555
Q550
TEMP
R553
Q551
FLT0
R556
Q552
FLT1
DGND
R550 10k
DSKCHGZ
R551 10k
R552 10k
TEST0Z
TEST1Z
DGND DGND DGND
R557
Q553
AC0Z
R558
Q554
AC1Z
R559
Q555
AC2Z
R560
Q556
AC3Z
R561
Q557
FL0Z
R562
Q558
FL1Z
R563
Q559
V5D
FL2Z
V3D R564
Q560
FL3Z
DGND
Important safety notice
Components identified by " " mark have special characteristics for safety.
When replacing any of these components, use only manufacture's specified parts.
31 32
3-5
0
120
270
V5D
150
V3D
330
330
330
330
330
330
330
330
33
<INDEX>
MAIN BOARD (5/5)
IC500 A29
IC501 A30
Q520 B29
Q521 C29
Q522 C29
Q523 C29
Q524 D29
Q525 B29,B30
Q526 C30,D30
Q550 D32
Q551 D32
Q552 D32
Q553 C32
Q554 C32
Q555 B32
CN550
Q556 B32
1 V5D
Q557 B32
2 RSTZ
Q558 B32
3 TEMPZ
Q559 A32
4 FLTZ/HDD
Q560 A32
5 FANZ
6 GND
D500 A29
7 DSKCHGZ
D520 C29
8 RAIDZ
D521 D29,D30
9 STOPZ
D522 D29,D30
10 GND
D523 B30
11 V5D
12 AC0Z
13 AC1Z
14 AC2Z
15 AC3Z
16 FL0Z
17 FL1Z
18 FL2Z
19 FL3Z
20 GND
TO
FRONT
SW
BOARD
CN100
DGND