Sanyo DC-PT100 Service Manual page 19

IC BLOCK DIAGRAM & DESCRIPTION
IC160 BA5937AFP (Power Driver for CD)
28 27 36
x2 x2
D D
THERMAL
SHUT
DOWN
LEVEL
SHIFT
D D
x2 x2
1 2 3
Pin No. Pin name Function
1 OUT1-1 Channel 1 negative output
2 OUT1-2 Channel 1 positive output
3 IN1-1 Channel 1 input
Input for channel 1
4 IN1-2
gain adjustment
5 N.C. N.C.
6 N.C. N.C.
Mute control for
7 MUTE
channels 1 and 4
8 GND GND
9 N.C. N.C.
IC231 LA11844ML(Home Audio Tuner IC)
24 23
ALC
AM
OSC
BUFF
LEVEL
DET
S-CURVE
FM
FM
IF
DET
REG
1 2
25 24 23 22
VCC(CH1,4)
-
+
LEVEL
SHIFT
+
-
MUTE
CH1,4
4 5 6 7
Pin No. Pin name
10 Vcc2
11
12 OUT2-2 Loading motor positive output
13 OUT2-1
14 GND
15
16 FWD
17 OUT3-1 Channel 3 negative output
18 OUT3-2 Channel 3 positive output
19
22 21 20
AM
AM
MIX RF.AMP
AGC
AM
AM
DET
IF
AM/FM
IF
COMP
BUFF
TUNING
DRIVE
GND
3 4 5
21
VCC(CH3)
+ -
-
+
LEVEL
SHIFT
8
Function
Vcc (channel 2)
N.C. N.C.
Loading motor
negative output
Substrate GND
REV Loading motor reverse input
Loading motor forward input
LDIN Loading motor input
19 18 17
P-DET
304kHz
6 7 8
- 22 -
20 19 18 17
x2 x2
D D
D
VCC(CH2)
x2
9 10 11 12
Pin No. Pin name
20 IN3 Channel 3 input
21 Vcc3 Vcc (channel 3)
22 Vcc1 Vcc (channels 1 and 4)
23 VrefIN Bias amplifier input
Input for channel 4
24 IN4-2
gain adjustment
25 IN4-1 Channel 4 input
26 OUT4-2 Channel 4 positive output
27 OUT4-1 Channel 4 negative output
28 GND Substrate GND
16 15 14
DECODER
CANCEL
ANTI-BIRDIE
STEREO
SW
VCO FF FF
38k
19k
2
VCC
9 10 11
16 15
FWD REV
LOGIC
VOLTAGE
CTRL
D
x2
13 14
D;Drive Buffer
Function
13
PILOT
FF
PILOT
19k
DET
12