Sharp CD-CH1500 Service Manual page 16

CD-CH1500
TO CD PWB
+SOL
1
SENSOR OUT
2
PLAY SW
SOLENOID
3
+MTR
4
PLAY
NC 5
SWITCH
NC 6
+
7
M
+5V SENSOR
8
–
–COM
TAPE
9
MOTOR
10
CST_SW
11
F_REC
12
R_REC
CNP901
GND
33
FH_C-SW_B
32
FH_C-SW_A
31
FH_A-SW_E
30
FH_A-SW_D
29
FH_A-SW_C
28
FH_A-SW_B
27
FH_A-SW_A
26
FH_T-SW_A
25
FH_T-SW_B
24
FH_T-SW_C
23
NC
22
21
NC
CD_RES
20
CD_CCE
19
CD_BUCK
18
CD_BUS3
17
CD_BUS2
16
CD-RW
15
CD_BUS1
14
T-MO_REV
13
CD_BUS0
12
T-MO_FOR
11
CD_L
10
PU-IN
9
A_GND
8
C-MO_REV
7
CD_R
6
C-MO_FOR
5
CD_GND
4
CD_GND
3
CD_+B
2
CD_+B
1
SOLENOID DRIVER
Q905
Q906
FFC970
RUN PULSE
Q907
1
1
12
11
+B
10
9
8
Q908 MOTOR DRIVER
7
6
5
+5V
4
3
2
12 12 1
Figure 16 BLOCK DIAGRAM (3/6)
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
31 LCD E
32 TIMER LCD
33
BACK LED CONT
34 SYS MUTE
35 C FUTA CL
C FUTA OP
36
+B 37 VDD
X901 38 X2
600kHz
39 X1
VSS
40
41 XT2
X902
42 XT1
32.768kHz
RESET
43
44 REMOCON
JOG-A
45
46 JOG-B
47 SYS STOP
48
PROTECT
49
50
51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79
+B +B
+B
1
3 IC905
Q901
IC905
2
KIA7042AP
RESET
+B
SOL
RUN_PUL
+B
CAM-SW
+B
MOTOR
Q909
CST-SW
SIDE-A
g h i
O Q P X Y U V W T R S d
SIDE-B
TO AUDIO SECTION TO AUDIO SECTION
– 16 –
30 LCD R/W
29 LCD RS
28 POWER RLY
IC901
27 N.C.
26 LCD DB7
IX0417AW
SYSTEM
MICROCOMPUTER
49 SP RLY
50 POWER KEY
+B
A_GND
c b a 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
f
TO AUDIO SECTION
TO POWER
+B
9 8 7 6 5 4 3 2
V
REC M
FH M
FH M
3 REC BIAS
FH M
2 REC
FH M
1 PB MUTE
CD PICK
CD
CD RE
CD B
CD B
CD B
CD BU
83 FH T-SW C
CD BU
82 FH T-SW B
CD C
81 FH T-SW A
FH C-S
FH C-S
VOLT
+B
1
+B
B
CNP806
PWB