Sony FDL-22 - Page 14

– 23 – – 24 –
B
AUDIO AMP, CHROMA, LCD INTERFACE
123456
A
B C
D
E
F
G
H
– B BOARD –
< Component Side > < Conductor Side >
DIODE
*
D301 B-3 3 D401 D-2 7 D402 G-2 3 D403 B-1 3 D404 H-2 3 D405 E-2 3 D406 E-3 3 D501 C-5 5 D502 C-5 5
IC
IC301 B-3 IC401 C-2 IC501 C-5
TRANSISTOR
*
Q302 G-3 1 Q303 C-3 2 Q401 E-3 1 Q402 D-2 2 Q403 G-2 1 Q406 A-2 !£ Q407 A-2 !£ Q408 B-2 2 VARIABLE RESISTOR
RV301 B-3 RV401 D-3 RV402 C-3
RV501 D-4
B BOARD
NC1NC 8
V+
2+INPUT 7
OUTPUT
100kΩ
50kΩ300Ω
3-INPUT
6
POWER GND
4GND 5
BIAS
+
-
B BOARD : IC501 NJM2070M
4.8Vp-p (4.5MHz)
• B BOARD WAVEFORMS
1
0.4Vp-p (3.58MHz)
2
0.9Vp-p (H)
3
0.8Vp-p (H)
4
4.2Vp-p (H)
5
0.7Vp-p (H)
6
0.9Vp-p (H)
7
0.9Vp-p (H)
8