JVC UX-M3R Service Manual page 28

UX-M3R
TA2092N (IC703) : Power driver IC
1.Terminal Layout & Block Diagram
PW GND1 1
OUT(-)1 2
PW VCC1 3
4
OUT(+)1
5
VIN1
6
VRI
7
VCI
8
VIN2
9
OUT(+)2
10
PW VCC2
11
OUT(-)2
12
PW GND2
TA7291S (IC702) : Bridge driver
1.Terminal Layout
1 2 3 4 5
IN2 VCC OUT2 NC GND
UPC1330(IC201): REC/PB audio head switch
1. Terminal layout
1
3. Pin function
Pin No. Symbol
1 SW
R1
2 GND
3 SW
P1
4 CONT
5 GND
6 Vcc
7 SW
P2
8 GND
9 SW
R2
1-28
2.Pin Function
24 PW GND4
23 OUT(-)4
22 PW VCC4
21
OUT(+)4
20
VIN4
19
SVCC1
18
SGND
17
VIN3
16
OUT(+)3
15
PW VCC3
14
OUT(-)3
13
PW GND3
2.Truth table
6 7 8 9
VS OUT1 VREF IN1
2. Block diagram
9
I/O Function
- Record SW (Left channel)
-
GND
- Play SW (Left channel)
- Record/play control pin
-
GND
- Power supply
- Play SW (Right channel)
- GND
- Record SW (Right channel)
Pin No. Symbol I/O
1 - Power GND
PW GND1
2 O Inverted output for CH1
OUT(-)1
3 - Supply terminal of output stage for CH1
PW VCC1
4 O Non-inverted output for CH1
OUT(+)1
5 I Input for CH1
VIN1
6 - Input reference voltage
VRI
7 - Output reference voltage
VCI
8 I Input for CH2
VIN2
9 O Non-inverted output for CH2
OUT(+)2
10 - Supply terminal of output stage for CH2
PW VCC2
11 O Inverted output for CH2
OUT(-)2
12 Power GND
-
PW GND2
13 - Power GND
PW GND3
14 O Inverted output for CH3
OUT(-)3
15 - Supply terminal of output stage for CH3
PW VCC3
16 O Non-inverted output for CH3
OUT(+)3
17 I Input for CH3
VIN3
18 - Supply terminal of small signal GND
SGND
19 - Small signal GND
SVCC1
20 I Input for CH4
VIN4
21 O Non-inverted output for CH4
OUT(+)4
22 - Supply terminal of output stage for CH4
PW VCC4
23 O Inverted output for CH4
OUT(-)4
24 - Power GND
PW GND4
INPUT OUTPUT
IN1
IN2 OUT1 OUT2
0 0
1
0 H L
0
1 L H
1
1 L L
INVERTER
COMPARATOR
1 2 3 4 5
Function
MODE
STOP
CW/CCW
CCW/CW
BRAKE
6 7 8 9