Technics RS-DV290EG Service Manual page 52

A
MAIN CIRCUIT
5V
Q807 Q809
2SB621ARSTA DTC143EUT106
SOLENOID DRIVE SOLENOID DRIVE
R802 R823
10.3V
560 560
10.3V 10.2V
0V
0V
B
MECHANISM CIRCUIT (DECK1)
D951
R952
MA165TA
820
SOLENOID
R953
39K
IC951
0N2180RLC1
PHOTO
INTERRUPTER
3 4
1 2 5V
C MECHANISM CIRCUIT (DECK2)
D971
R972
MA165TA
820
SOLENOID
Z971
25K 25K 25K
1 2 3 4 5 6 7
D
B
5V C
IC971
0N2180RLC1
PHOTO
INTERRUPTER
R973
39K
2 1 A
4 3
13 14 15
:POSITIVE VOLTAGE LINE
: RECORDING SIGNAL LINE
D L
Q810 Q808
DTC143EUT106 2SB621ARSTA
SOLENOID DRIVE SOLENOID DRIVE
10.3V
R824 R812
10.3V
560 560
10.2V 10.3V
0V 0V
0V
0V
Q803 Q805
2SD592ARSTA DTA143EUT106
MOTOR DRIVE MOTOR DRIVE
R814
9.8V
470
0V 5V
0V
0V
CP901
CS951
5V
1 1
2 2
3 3
4 4
5 5
6 6
7 7 5V
8 8
9 9
E
P
S
CP306
CAPSTAN F
MOTOR 1
Q
(DECK1)
2 10.3V
M
A
3
R805 R803
3.9K 10K
B
4
VR801
5K(B)
TAPE SPEED
ADJ.(DECK1)
A B H G K
CS971 CP902 A
1 1 B
2 2 C
3 3
4 4
A 5 5
6 6
B
C 7 7 5V
D 8 8
9 9
Q806
DTA143EUT106
MOTOR DRIVE
0V
Q804
2SD592ARSTA
R820
MOTOR DRIVE
CP305 2.2
CAPSTAN
1
MOTOR
(DECK2)
2 10.3V
M
A
3
R810 R808
10K 3.9K
B
4
VR803
TAPE SPEED
5K(B)
ADJ.(DECK2)
16 17
: PLAYBACK SIGNAL LINE
4.8V
0V
5ms. 2V/ DIV.
4.8V
0V
T 16 ms.
3.6V
0V
T 16ms.
R737 10K
R736 10K
L701 R711
10 H 100K
C706
5V
50V3.3
0V
0V
Q706
DTC114EUT106
RESET
3V
0V
T 16ms.
R712 68K
R718 68K
R701 10K
R702 10K
F
G
5V
10.3V
Q602
2SD2144STA
POWER SUPPLY
9.6V 10.3V
10.3V
5V
5V
0.8V
0V 0V
18 19 20
5V
Q701,703
2SD1819ARTX
J G D E
R738 R747
INTERFACE
1K 1K
R704
1.9V
4.7K
0.1V
0V
A B C D E
Q701
R708
4.7K
0V
1.2V
P-P
Q703
F=8MHz
1 3
R722
100
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
X701 2
(8MHz)
4.8V
0V
2.4V
T 16ms. P-P
F=8MHz
IC701
M38503M2406F
42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
SYSTEM CONTROL
R703
5.6K
R735
R721
R732
C B A F G H I J K L M N O R Q S P
Q604
2SC3940AQSTA
REGULATOR R603
10
5V 9.4V
5.7V
R630
0.33
R606
1.5K
R602
0.33
F
+10V
G
R609
100
(D.GND)
H
D651 E D A B C
TP609 TP604
I
MA165TA
R632
J
47K
D652
A
MA165TA
B
C
D
E
F
Rch Lch Rch Lch
OUT OUT IN IN
9.6V
CT.GND
RS-DV290(EG) MAIN,MECHANISM(DECK1,2), EARTH TERMINAL CIRCUIT DIAGRAM
21 22
F
H
I
1.8V
0V
R705
47K
0.2V
0.6V
CN901
0V
1
A 2
B 3
Q702
C 4
2SD1819ARTX
5
INTERFACE
D 6
7
E 8
4.7K
4.7K
100K
EARTH
D
TERMINAL
CIRCUIT
A.GND
W601 E1
CN601
1 SYNC
2 NC
3 NC
4 CS
5 +B (10V)
6 D.GND
7 SCLK
8 DATA
To DVD CHANGER(SL-DV290)
9 DECK REQ
CD CHANGER (SL-EH790)
10 NC
CD PLAYER(SL-EH590) &
11 TAPE Rch OUT
SOUND PROCESSOR
12
TAPE Lch OUT
(SH-DV290,SH-EH790,590)
13 RS A.GND
14 TAPE Rch IN
15 TAPE Lch IN
16 NC
17 A.GND
18 NC
19 NC
20 NC
23 24