Sony DSX-A50BT Service Manual

DSX-A50BT
DSX-A50BT
2626
• IC Block Diagrams
– MAIN Board –
IC102, 601 MM1836A33NRE
VOUT
4
CONT 1
GND
2
NC
3
VIN
5
+
–
VOLTAGE
REFERENCE
REGULATOR
CURRENT
LIMIT
THERMAL
SHUTDOWN
BIAS
IC304 LV47011P-E
TA B
1
PWR GND2
2
PWR GND1
8
PWR GND3
18
PWR GND4
24
OFFSET DIAG
25
OUT 2–
3
OUT 1–
7
OUT 2+
5
VCC1/2
6
VCC3/4
20
OUT 1+
9
STBY
4
+
–
+
–
STANDBY
SWITCH
MUTE
CIRCUIT
PROTECTIVE
CIRCUIT
PROTECTIVE
CIRCUIT
DC
10
IN1
11
RIPPLE
FILTER
IN3
15
AC GND
16
IN2
12
PRE GND
13
IN4
14
OUT 3+
17
OUT 3–
19
+
–
MUTE
22
OUT 4+
21
OUT 4– 23
+
–
IC401 LV56831P-E
NC
1
NC
4
NC
7
VCC
8
VCC1
9
AUDIO_EN
2
REG_EN
10
IKREG
11
AMP_EN
12
AMP
13
GND
14
AUDIO
3
+
–
VDD
5
IKVDD
6
REG
15
+
–
+
–
+
–
START
UP
VREF
OVER VOLTAGE
PROTECTION
THERMAL
SHUTDOWN
OUTPUT
CONTROL
IC402 S-1142B90I-E6T1U
VOUT 1
ON/OFF
3
VIN
6
NC
4
VSS
5
VSS
2
+
–
OVERCURRENT
PROTECTOR
THERMAL
SHUTDOWN
REFERENCE
VOLTAGE
ON/OFF
CONTROL
IC501 OZ529IGN-A1-TR
BST 1
LX
2
FLT_USB
9
VIN 3
EN_SYS
4
USBOUT
5
ISET_USB10
RT
15
VREF16
FB_USB 6
USBIN
2V
UVLS
7
SYNC
8
GNDA
14
VIC_USB
11
SS_SYS
13
EN_USB
12
HDR
+
OSCILLATOR
REFERENCE
GENERATOR
OVER CURRENT
PROTECTION
VS
SEL
Q
S
R
ADJUSTMENT
GENERATOR
CHARGE
PUMP
OVER-CURRENT
LIMIT
USB FAULT
PROTECITON
VOUT_SYS (USBIN)
FAULT PROTECTION
+
–
+
–
+
–
+
–
– KEY Board –
IC901 PT6586-LQ
1 2 3 4 5 6 7 8 9 10 11 12
13
14
15
16
17
18
19
20
21
22
23
24
252627282930313233343536
37
38
39
40
41
42
43
44
45
46
47
48
COM3
COM4
SEG35
OSC
CS
CLK
SI
VDD
VLCD1
VLCD2
VSS
SEG1/GP1 SEG2/GP2 SEG3/GP3 SEG4/GP4
SEG5 SEG6 SEG7 SEG8 SEG9
SEG10
SEG11
SEG12
SEG34 SEG33 SEG32 SEG31 SEG30 SEG29 SEG28 SEG27 SEG26 SEG25
COM2 COM1
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEGMENT DRIVER & LATCH
SHIFT
REGISTER
COMMON
DRIVER
CLOCK
GENERATOR
ADDRESS
DETECTOR
INHB

Sony DSX-A50BT Specifications

General

MP3 playback	Yes
CD-R playback	No
FM band range	87.5 - 108 MHz
Product color	Black
Amplifier output power	50 W

Weight and Dimensions

Weight	700 g
Dimensions (WxDxH)	178 x 120 x 50 mm