JVC CA-MXKA6 Service Manual page 29

BA15218DIP (IC102) : Dual low noise operational amp.
1. Terminal layout
OUT1
- IN1
- +
+IN1
+ -
VEE
LA1823DIP (IC1) : 1chip AM/FM, MPX tuner system
1. Block diagram
24 23 22
GND2
FM
RF
AM AM
RF MIX
AM
OSC
REG
1 2 3
2. Pin function
Pin
Symbol I/O
No.
1 AM_RFIN I AMRF signal input
2 REG. -
3 AM_OSC - AM local oscillation circuit
4 VCC_1 - Power supply terminal
5 FM_MIXOUT O Output terminal for FM mixer
6 GND_1 - Ground
7 IF_BUFFER O IF buffer output
8 ST_IND O Stereo indicator output
9 AM_MIXOUT O Output terminal for AM mixer
10 FM_IF IN I Input of FMIF signal
11 AM_IF IN I Input of AMIF signal
12 AGC I AGC voltage input terminal
Vcc
OUT2
- IN2
+IN2
21 20 19 18
VCC2 MUTE
FM
OSC
FM
MIX
SD
OSC
BUFFER
IF
BUFFER
VCC1 GND1
4 5 6 7
Pin
Function
No.
13
14
15
16
17
18
19
20
21
22
23
24
17 16 15
PHASE
DECODER
COMP
ST SW VCO FF FF
TRIG
FM
ST
S-METER
FM
IF
8 9 10
Symbol I/O
FM_DET O FM detection signal output
ST/MON_SW I Stereo/Monaural switching signal input
AM/FM_SW I AM/FM switching signal input
L_OUT O Output L-channel
R_OUT O Output R-channel
MPX_IN I Multiplex signal input
DET_OUT O AM/FM detection output
FM_OSC - FM local oscillation circuit
VCC_2 - Power supply terminal
FM_RFOUT O Output of FMRF signal
GND_2 - Ground
FM_RFIN I Input of FMRF signal
MX-KA6
14 13
PILOT FM
DET DET
FF
AM
AGC
DET
AM
IF
11 12
Function
1-29