Sanyo DC-DA1250M Service Manual page 11

IC BLOCK DIAGRAM & DESCRIPTION
IC104 LA6548NH-E (CD Driver)
PIN No. Pin Name
1 VCC1 Power supply (VCC2, short-circuit 28pin)
2 MUTE Output ON/OFF terminal
3 VIN1 CH1, Input terminal
4 VG1 CH1, Input terminal(Gain setting)
5 VO1+ CH1, Output terminal(+)
6 VO1- CH1, Output terminal(-)
7 (NC) (Do not use)
8 (NC) (Do not use)
9 VO2- CH2, Output terminal(-)
10 VO2+ CH2, Output terminal(+)
11 VG2 CH2, Input terminal(Gain setting)
12 VIN2 CH2, Input terminal
13 REG_C External PNP Connect to transistor collector
14 REG_B External PNP Connect to transistor base
15 RESET RESET output
IC211 LA1186N-AUDIO (Diode for RM AMP,MIX,
Vref
RF MIX
1 2 3 4
RF IN
Level shift
Level shift
Description (Function)
OSC&AFC)
BUFFER
REG OSC
5 6 7 8
GND IF OUT
FR
Level shift
Level shift
FR
PIN No. Pin Name
16 CD
17 VIN3
18 VG3
19 VO3+
20 VO3-
21 (NC)
22 (NC)
23 VO4-
24 VO4+
25 VG4
26 VIN4
27 VREF
28 VCC2
IC410 BA3314F (Dual Pre Amplifier for Audio)
NF1
1
IN1 2
GND (SUB) 3
GND 4
Vcc 5
9
Vcc 6
IN2
7
FILTER
- 10 -
Description (Function)
RESET Connect to condenser
of dalay time setting
CH3, Input terminal(Gain setting)
CH3, Input terminal(Gain setting)
CH3, Output terminal(+)
CH3, Output terminal(-)
(Do not use)
(Do not use)
CH4, Output terminal(-)
CH4, Output terminal(+)
CH4, Input terminal(Gain setting)
CH4, Input terminal(Gain setting)
Standard applied voltage terminal
Power supply
(VCC1, short-circuit 1pin)
14
150k
13
-
12
+
ALC 11
+
10
-
150k
9
8
ALC
NC
OUT 1
NC
OUT 2
NF2
NC