Read Sony DPP-EX50 (serv.man2) Service Manual online
5-4
DPP-EX50 V2
IC
37
38
39
40
41
42
43
44
45
46
47
48
24
23
22
21
20
19
18
17
16
15
14
13
36
35
34
33
32
31
30
29
28
27
26
25
1
2
3
4
5
6
7
8
9
10
11
12
LCD DRIVER
—TOP VIEW—
1
2
3
4
5
6
7
8
9
10
11
12
I
O
—
—
—
—
—
I
I
I
I
O
OSC1
OSC2
V1
V2
V3
GND
V
CC
SCK
SD
CS
C/
D
COM0
13
14
15
16
17
18
19
20
21
22
23
24
O
O
O
I
O
O
O
O
O
O
O
O
COM1
COM2
COM3
RESET
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
25
26
27
28
29
30
31
32
33
34
35
36
O
O
O
O
O
O
O
O
O
O
O
O
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
37
38
39
40
41
42
43
44
45
46
47
48
O
O
O
O
O
O
O
O
O
O
O
O
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
PIN
NO.
I/O
SIGNAL
PIN
NO.
I/O
SIGNAL
PIN
NO.
I/O
SIGNAL
PIN
NO.
I/O
SIGNAL
INPUTS
C/
D
CS
OSC1
RESET
SCK
SD
OUTPUTS
COM0 - COM3
OSC2
SEG 0 - SEG31
: DISCRIMINATION SIGNAL
L: DISPLAY DATA
H: COMMAND
: CHIP SELECT
: OSCILLATOR
: RESET
: SHIFT CLOCK
: SERIAL DATA
: COMMON FOR LCD DRIVE
: OSCILLATOR
: SEGMENT FOR LCD DRIVE
SD
SCK
C/
D
CS
9
8
11
10
RESET
16
OSC1
OSC2
1
2
SEG0 - SEG31
17 - 48
COM0 -COM3
12 - 15
COMMAND
DECODER
TIMING
GENERATOR
SERIAL
INTERFACE
COMMAND/DATA
REGISTOR
ADDRESS
COUNTER
DISPLAY
DATA RAM
(DD RAM)
LCD
SEGMENT
DRIVER
32
4
COMMON
COUNTER
LCD DRIVER
BIAS CIRCUIT
LCD
COMMON
DRIVER
V
CC
V1
V2
V3
7
3
4
5
POWER-DISTRIBUTION SWITCH
—TOP VIEW—
1
2
3
4
8
7
6
5
INPUTS
EN
IN
OUTPUTS
OC
OUT
: ENABLE
: INPUT VOLTAGE
: OVER CURRENT
: POWER SWITCH
GND
IN
IN
EN
OUT
OUT
OUT
OC
UVLO
CHARGE
PUMP
THERMAL
SENSE
DRIVER
CURRENT
LIMIT
CS
POWER SWITCH
CURRENT
SENSE
IN
EN
OC
OUT
2, 3
4
6 - 8
5
S
GND
XT
INH
1
2
3
XT
4
Q0
V
CC
6
5
PLL CLOCK GENERATOR
—TOP VIEW—
INPUTS
INH
XT
OUTPUTS
Q0
XT
: STANDBY CONTROL
: CRYSTAL OSCILLATOR
: CLOCK
: CRYSTAL OSCILLATOR
PLL
1/2
Cd
Cg
Rf
Rup
1/2
1/2
V
CC
XT
XT
INH
5
2
6
1
Q0
4
V
OUT
V
IN
GND
1
2
3
CE
4
EXT
5
POSITIVE VOLTAGE REGULATOR
—TOP VIEW—
INPUT
CE
OUTPUT
EXT
: CHIP ENABLE
: EXTERNAL TRANSISTOR BASE CURRENT CONTROL
+
_
VREF
PROTECTION
S
V
IN
V
OUT
2
3
GND
1
CE
5
EXT
4
BU9728AKV-E2 (ROHM)
TPS2041ADR (TI)
XC2173S01XMR (TOREX)
XC62EP1602MR (TOREX)
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