Technics RS-DV250, Service Manual

Page: 13 / 16

DOLBY
Rch
F
D
E
C N R M O
B
A
IC201
CXA1552M-T4
DOLBY B NR
1 2 3 4 5 8
9 12 13 14 15
ATT2
ATT2
ATT3
ATT3
ATT1
ATT1
SC DET
SC DET
6 7
10 11 16
ON/OFF
R/P
B A
J
I
A
B
A
B
IC102
MC14066BFEL
DECK 1/2 SELECT
1 2 3 4 5 6 7
8 9 10 11 12 13 14
Q107
DTA143EUT106
R/P SELECT
Q202
DTA143EUT106
ENC/DEC SELECT
Q201
DTA143EUT106
DOLBY ON/OFF
R209
1K
R725
2.2K
R730
2.2K
R726
2.2K
C134 470P
C133 470P C142
0.1
C203
25V4.7
R211
10K
C207
270P
L201 R218
2.2K
R217
2.2K
C21
1
1500P
C220
10V470
C219
16V100
C241
0.01
R237
22
R220
22
C239 680P
C205
50V1
R221
100
R230
1K
R223
10K
C223
25V4.7
C221
50V0.68
R213
3K
R215
12K
C213
25V4.7
C225
25V4.7
C217
50V0.1
R222
100
R219
18K
C206 50V1 C240 680P C212
1500P
R212
10K
R210
1K
C204
25V4.7
C208
270P
L202
C214
25V4.7
R216
12K
C226
25V4.7
R224
10K
R231
1K
R151 100K
R140
47K
R152 100K
R139
47K
C141 50V1
R148
5.6K
VR102 20K(B)
R150
5.6K
VR104
20K(B)
R214
3K
C222
50V0.68
R149
5.6K
VR103
20K(B)
R147
5.6K
VR101
20K(B)
C218
50V0.1
DOLBY
Lch
C
R122
10K
R121
10K
:POSITIVE VOLTAGE LINE : PLAYBACK SIGNAL LINE : RECORDING SIGNAL LINE
5V
5V
9.6V
9.6V
(0.2V)
9.6V
0V
(9.5V)
4.8V 9.6V 4.7V 4.7V 4.6V 4.7V 0.4V 4.8V
4.8V 4.7V 1.2V 4.7V 0.4V 4.8V 4.6V
(0V)
0V
5V
5V 5V
(0V)
5V
(5V)
0V
PLAYBACK
GAIN ADJ.
(DECK1/Lch)
PLAYBACK
GAIN ADJ.
(DECK2/Lch)
PLAYBACK
GAIN ADJ.
(DECK1/Rch)
PLAYBACK
GAIN ADJ.
(DECK2/Rch)
9.6V 9.6V
(0.1V)
0V 0V 0V 0V 9.6V
(0.1V)
0V 0V 0V 0V
(9.6V)
0.1V
(9.6V)
0.1V
DOLBY
ON : 0V