Panasonic WJ-HD500 Service Manual page 48

POWER BOARD
∗
NTSC PAL
J1 SHORT OPEN
R2 393 1/4W 913 1/4W
B
R3 393 1/4W 913 1/4W
R4 334 1/4W 0R00
R5 334 1/4W OPEN
C5 1200/200 OPEN
C6 1200/200 470/400
VS2 ERZ07D241 OPEN
VS3 ERZ07D241 OPEN
L1 L2
SW1
POWER SWITCH
1
A
E5
2
E6
E7
AC IN
1
Important safety notice
Components Identified by " " mark have special characteristics for safety. When replacing any of these components, use only manufacturer's specified parts.
Note:
The value indicated in the schematic diagram should be read as follows:
Multiplier (0 - 5)
2nd. Significant Digit (0 - 9)
1st. Significant Digit (1 - 9)
SCHEMATIC DIAGRAM OF POWER BOARD
T1
POWER TRANSFORMER
T1
∗
J1
1
D1
2
3
R6
C27 101
181 3W
4
D4
R10 470
5
4
IC1
Q2
3
Q1
6
C26 152
2
<Example>
For Capacitor
For Resistor:
0 33 Ω (Except Electrolytic Capacitor and Tantalum Capacitor):
330 33 x 10 =
0
1 = 560 Ω 820 82 x 10
561 56 x 10
2
102 10 x 10
3 = 12k Ω
123 12 x 10
4
0R00 = 0 Ω 104 10 x 10
– 44 –
IC3
1 2
I O
3 4
R15 R14
391 332
IC4
OPEN
D5
7 1
3 1 2
I O
2
3 4
R18 R17
8 OPEN OPEN
D8
9 1
3
2
4
1
Q1
Q2
3
2
3
1
2
IC2
10
11
VR2
(+5V)
D9
L7 330
1 3
2
12
For Coil:
0
010 1 x 10 =
= 82 pF 0 = 8.2 µH
8R2 8.2 x 10
1000 pF = 0.001 µF
= 1 = 100 µH
101 10 x 10
0.1 µF
= 100000 pF =
(L4)
JAMPER
CN2
R13
TO
1 +12V
560
2 GND
ANALOG BOARD
3 GND
L5 . . . . . . . . . . . CN14
4 +5V
OPEN
CN3
R16
1 +12V
OPEN
2 GND
3 GND
L6 330 E3 E4
4 +5V
F2
T5AL 250V
CN4
TO
1 PWROFF
MAIN BOARD (1/10)
2 GND
. . . . . . . CN15
E11
TO
1 +3.3V
2 GND
ANALOG BOARD
3 GND
. . . . . . . . . . . CN17
4 +3.3V
3
< INDEX >
POWER BOARD
IC1 A2
IC2 A3
IC3 B3
Q1 A1,A2
Q2 A2,A3
D1 A1/B1
D2 B2
D3 A2
D4 A2
D5 B2
1 µH D8 B2
D9 A2
D11 A1