Sharp CD-DD4500 Service Manual page 29

7 48 49 50 51 52 53 56 57 58
6 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
T1_RUN
LCK1
LCK2
SP_DET
ARAOKE_LATCH
UNER_FUNC/CD_RES_OUT
CD_CLAMP_SW
OT_SPEED_CNT
T2_RUN
RESET
01
VDD0
2AW
VSS0
OCOMPUTER
DD_STATUS
DD_LOCK
DD_CS
DD_LP
DD_ACK
DD_DI
DD_DO
DD_CLK
DO
6 17 18 19 20 21 22 23 24 25 26 27 28 29 30
7 0.022
8 10K
+B
+B
B
RD32
1K
9 8 7 6 5 4 3 2 1
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
CNP8
7
+B
LED709
4204S.T7
TIMER
R778
10K
R741 1K
50
LCK1
R740 1K
R777
49
10K
LCK2
R739 1K
48
RD94 10K
SP_DET
R738 1K
47
TUN_FNC RD93 10K
R737 1K
46
MOT_CNT RD92 10K
R736 1K
45
R735 1K R773 10K
44
R734 1K
43
RESET
R733 1K
42 +B
+B
41
40
DD_ST
R732 1K
39
DD_LOCK
R731 1K
38
DD_CS RD87 3.3K
R730 100
37
DD_LP RD86 3.3K
R729 100
36
DD_ACK
R728 1K
35
+B
R798 10K
R727 1K
34
R726 100
RD91
33
3.3K
2
32
1
31
3
+B
RD20 RD21 RD22 RD23
680 820 1K 1.5K
KEY0
SW722 SW723 SW724 SW725
TUNING MEMORY
CD TAPE
DOWN REWIND
SET
RD13 RD14
RD17
680 820
KEY1
1K
SW714 SW716
SW715
DIMMER X_BASS EQUALIZER
KEY2
RD01 RD02 RD03 RD04
680 820 1K 1.5K
SW701 SW702 SW703 SW704
POWER CLOCK TIMER BYPASS NORMAL
BI703
CNS703
TO
CD SERVO PWB
8
Figure 29 SCHEMATIC DIAGRAM (6/14)
+B
R775
R772
10K
10K
+B
Q710
KTA1273 Y
C709 +B
0.022
T_MOT
+B
T1_SOL
+B
Q708
T2_SOL
KTA1271 Y
C711
0.001
B
A
C710
0.001
RD24 RD26 RD27 RD28 RD29
RD25
2.2K 3.9K 5.6K 10K 15K
2.7K
SW727
SW726 SW731
SW728
SW729
FAST
FAST REC/PAUSE
PLAY STOP
FORWARD
RD07
RD05 RD06 RD08 RD09 RD10
3.9K
2.2K 2.7K 5.6K 10K 18K
SW705 SW706 SW707 SW708 SW709 SW710
PHANTOM VIRTUAL DISC 1 DISC 2 DISC 3
9 10
– 29 –
FC702
1
R_REC
1 1
T1 RUN
2 2
F_REC
3
3
SOLA/SOLB
4
4
+MTR
5
5
C712 T2 RUN
6
6
47/25
GND
7
7
T2 PLAY
8
8
R774
8
4.7K
RD30 RD31
33K 100K
SW732 SW733 SW734
TUNING
VIDEO TUNER
UP
RD11
33K
SW711 SW712
OPEN/
DISC
CLOSE
SKIP
11
CD-DD4500
TAPE MECHANISM
PWB-F
CASSETTE
PH
SOLENOID
F. PLAY
SOLENOID
+
TAPE
M
MOTOR
-
PLAY
12