Toshiba SD-2550A Service Manual page 74

4-3-3. Front Display, Power Switch Block Diagram
A101
HUV-08SS38T
8-BT-230GNK
F(-)
G1 G2 G3 G4 G5 G6 G7
1 2 22 23 24 25 26 27 28
VIN0 VIN1 VIN2 VIN3
SKIP
KIN0 STOP PAUSE UP
KIN1
KIN2
KIN3 DISPLAY
G8 S18 S17 S16 S15 S14 S13 S12 S11S10 S9
29 21 20 19 18 17 16 15 14
52 53 54 55 56 57 58 59 60
S18 S16 S14 S12 S10
S17 S15 S13 S11
77 G1
76 G2
G3
75
74 G4 G4
FLIP DRIVE
73 G5
G6
72
71 G7
DISPLAY MEMORY
112byte
70 G8
KEY
PROCESS
30 KEY IN 0
KEY IN 1
31
32 KEY IN 2
33 KEY IN 3
PLAY K
19
20 TRAY KEY
18 POWER KEY
POWER
Vdd VASS LED
5 38
VIN4
E+5V
SKIP
DOWN
OPEN/
PLAY
CLOSE
REPLAY
3-9
F(+)
S8 S7 S6 S5 S4 S3 S2 S1
13 12 11 10 9 8 7 6 5 4 31 32
61 62 63 64 65 66 67 68 69
S8 S6 S4 S2
S9 S7 S5 S3 S1 IC101
TMP87CH74AFG-3KB2
or TMP87CH74AFG-3PV7
DISPLAY MICROCOMPUTER
8
16
15
17
9
3
X101
8MHz
2
11
23
EU03
FRONT DISPLAY
CN101
EVER+5V 11
3
1
4
2
CN101
9
8
7
6
5
MT101
GP1UM261XK
REMOTE CONTROL
MODULE
1
SIGNAL
EVER+5V
PROCESS
2
AMP
REMOTE CONTROL
3
RECEPTION
EVER+5V
Q182
RN2402
Q181
RN2402
D181
SPR-325MVW
3-10
MAIN
EU01
CN603
EVER+5V 3
Vkk (-31V) 11
To POWER
F(-)
13
GND 10
F(+) 12
CN603
DSPRSTX 5
DSPSIO D-M 6
To LOGICAL
DSPSIO M-D 7
DSPCKX 8
DSTBX 9
Fig. 3-4-5