Sharp GX-CH170X Service Manual page 32

GX-CH170X/CH170Z
A
DISPLAY PWB-A4
+B
B
LED701
3N4PDN33
P-ON
GREEN
1
ST-BY
2 3
RED
R783
330
Q713
KRA102 M
D713
R784
1SS133
330
Q714
KTC3199 GR
D711
1SS133
C
R728
47K
LCD801
1
2
1 2 4
3 5 6 7
1 2 3 4 5 6 7
FW701
1 2 3 4 5 6 7
D
E
F
SW981
TRAY/
G
MECHANISM UP
UP-SW
GND
SW983
2-b
TRAY2
GND
2-a
–
MO1
M981
M
LOADING MO0
MOTOR +
1-b
GND
1-a
SW982
TRAY1
H
NOTES ON SCHEMATIC DIAGRAM can be found on page 16.
1
SWITCH PWB-7 SWITCH PWB-8
R786
4 4
LED703 330
3N4GDN32
3 3
2 2
R787
TRAY2
12K
1 1
OPEN/
CLOSE
SW713
FW505 SW714
TRAY1
OPEN/CLOSE
1 2
FW504
CNP504
1 2
Q711 ~ Q715 :
LED CONTROL
CLEAR Q715
SW712
KTC3199 GR
2
REVIEW
PROGRAM
R782
SW706
5.6K SW711 1
VOL-DOWN CUE
R781 3
SW710 SW705
3.9K
VOL-UP PAUSE
R780
SW709 SW704
2.7K
POWER
SW701
PLAY
RANDOM R774
R779
SW703 1.8K
1.8K SW708
RX701
DISC 1-2
STOP R773
R778
2
1.5K
1.5K SW707 SW702
3
R771 C711
R772
10K 560P
10K
R762
R756
+B 22K 10K
8 9 10 11 12 13
8 9 10 11 12 13 9 8 7 6 5 4 3 2 1
11 10
FW702
8 9 10 11 12 13 11 10 9 8 7 6 5 4 3 2 1
µ-COM5V
VREF
REMOCON
KEY1
KEY2
Q705
KTC3199 GR
R726
47K
CNS705
CHANGER
MOTOR
IC761
CONTROL
BA6218
9 8 7 6 5 4 3 2 1
1 0 10
9 9
8 8
R757
7 7
3.9K
6 6
5 5 R758
+B
6.8K
4 4
+B
3 3
R759
2 2
15K
1 1
1 2 3 4 5 6 7 8 9
FW751
2 3
Figure 32 SCHEMATIC DIAGRAM (5/7)
TAPE2
PLAYBACK HEAD
+B
L-CH
1
2
3
R-CH
3 4 5
3 4 5
TAPE1
RECORD/PLAYBACK
HEAD
1
L-CH 2
+B
3
2
4
1
5
R-CH
3
R765 R766
10K
10K
ERASE HEAD
1
C710
0.1
+B +B
C709
0.022
48 47 46 45 44 43 42 41 40 39 38 37 36
49 SEG12
SEG11
50
SEG10 48 47 46
51
SEG9
52
35 34
SEG8
53
SEG7
54
IC901
55 SEG IX0146AW
SEG
56 SYSTEM
SEG
57 MICROCOMPUTER
SEG
58
59 SEG
60
SEG
61 SEG
1 2 3
14 15 16
TR1 LED
62
TR2 LED
63
MTR1
64
R724
1K
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
R701
1K
R702
1K
+B
10 11 12 13
P29 7-A
TO MAIN PWB
CNP751
4
– 32 –
DECK PWB-C
R201
1K
R222
6.8K
R202
1K
R231
10K
1
2
3
SW201-D SW201-C
R P R P
R203
C207
1K 330P
C203
150P
24
1
C205
2
680P
3
4
5
C206
680P
R204
1
1K
C204
150P
C208
330P
R P R P
C212
SW201-F SW201-E
150P
R232
10K
IC201 : PLAYBACK AND RECORD
/PLAYBACK AMP.
KTC3199 GR
Z ONLY
KTC3199 GR
MICROCOMPUTER
+B
+B
R755
4.7K
+B
R754
10K
R753
10K
+B
R752
10K
R761
1K
35 34 33
R760
22K
CD/SYC-IN
32
AC/DC
31
C707
REMOCON
30
100/10
VREF
29
R748
33
AVSS
28 2.2K
XC-IN
27
L701
XC-O
26
1.5µH
VDD
25
L702
VSS
24
1.5µH
R720
X-OUT
23
X701
X-IN
22
4MHz
RESET 21
R719
PU-IN 20
R718
WRQ
19
R717
SQ-OUT
18
R716
DRF
17
R716 ~ R720 : 1K
R704 ~ R714 : 1K
+B
R747
10K
+B
+B
1 R749
+B
1K
3 2
R750
Q701
3.3K
KRC102 M
D703
1SS133
5
R220 R219
33K 33K
R211
C
6.8K
0
R209 R207
R21
150K 6.8K
5.6
R215
C217
6.8K
0.022
C209
C219
330P
1/50
23 22 21
2 3 4
C220
1/50
C210
330P
C246
560P
R210 R208 R21
150K 6.8K 5.6
C
R212
0.
6.8K
C361
X ON
X: 180P
Z: 0.001
C362
R367
0.001
5.6K
Q362
R368
5.6K
Q363
C367
0.022
RESET
Q702
KRC102 M
2 3
R751
1
1K
D701
1SS133
1
C712
56P
2 3
R76
10K
Q704
KRC102 M
BEAT CANCEL
R738 ~ R743, R767 : 15
+B
2
1 Q703
KRA102 M
3
D704
1SS133
6