JVC CH-X1500 Service Manual page 36

CH-X1500
4.9 TA2157FN-X (IC601) : RF amp
• Terminal layout
24
1
• Block diagram
PIN
VCTRLPIN
VCC
HiZ
GND
1-36
~ 13
~ 12
13
20k 20k
14
15
15k
16
50 A
20k
12k
17
12k
20k
BOTTOM
18
PEAK
19
20
20k
21
22
23
3k
3k
24
SEL
(APC SW) (TE BAL)
APC ON -50%
APC ON
APC OFF
(LDO=H)
PEAK
50k
40k
20k
20k
20k
2k
50k
14k
240k
15pF
K
240k
15pF
1
60k
60k
180k
94k
40pF
TEB RFGC
(AGC Gian)
+12dB
0% +6dB
50% 0dB
12
15k
11
10
9
8
1k
7
2k
6
1.75k
x0.5
5
x2
x0.5
4
x2
94k
3
22k
2
22k
1
TEB
(TE BAL)
Normal mode
(0dB)
Normal mode
(0dB)
CD-RW mode
(+12dB)