Read Sony HCD-XB66 / HCD-XB660 / LBT-XB66 / LBT-XB660 Service Manual online
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HCD-XB66/XB660
7-3.
BLOCK DIAGRAM
– TAPE DECK Section –
PB EQ AMP
(DECK A)
IC611
PB LEVEL (L)
(DECK A)
REC-L
PB-L
CAPSTAN MOTOR
CONTROL SWITCH
Q651
1
B
(Page 31)
(Page 32)
L-CH
R-CH
R-CH
HP101
(PLAYBACK)
PB EQ AMP
(DECK B)
IC601
L-CH
R-CH
R-CH
05
R-CH
R-CH
HRPE101 (1/2)
(RECORD/PLAYBACK)
REC
EQ AMP
AMS
CIRCUIT
DOLBY NR
AMP
CIRCUIT
BIAS
CONTROL
CIRCUIT
DOLBY PASS
R-CH
L.P.F.
BUFFER
Q1533
+12V (M)
M
M1
(CAPSTAN)
HRPE101 (2/2)
(ERASE)
BIAS OSC
T621
B+
(A+7V)
R-CH
3
4
28
6
11
8
9
21
15
12 14 16 17 18 19 20
13
87 88 89 90 91 92 93
23
25
24
24
+
2
4
2
RV311
PB LEVEL (L)
(DECK B)
RV301
TAPE SPEED
(NORMAL)
RV651
TAPE SPEED
(HIGH)
RV652
REC LEVEL (L)
(DECK B)
RV1501
REC BIAS (R)
(DECK B)
RV441
REC BIAS (L)
(DECK B)
BIAS OSC
Q621, 622
REC BIAS
SWITCH
Q623
ROTATION
DETECT SENSOR
(DECK A)
Q1001
RV341
BIAS
TRAP
C331, L331
REC/PB SWITCHING
IC602
SYSTEM CONTROLLER
IC301 (2/3)
DECK PROCESS
DECK A/B SELECT, PB/REC EQ AMP,
DOLBY NR AMP
IC1501
AIN (L)
BIN (L)
MAOUT
PB OUT (L)
EQ OUT
(L)
MSIN
MSOUT
BIAS-ON/OFF
70
120
NORM
CROM
METAL
S1004
A 120/70
B 120/70
PB-A/B
NORM/HIGH
NR-ON/OFF
RM-ON/OFF
REC/PB/PASS
LM-ON/OFF
(DECK A 120/70)
97
S1003
S1001
(DECK A PLAY)
S1002
(DECK B PLAY)
(DECK A HALF)
S1008
(DECK B 120/70)
27
REC OUT (L)
RIN (L)
EQ IN (L)
10
96
26
A-SHUT
ROTATION
DETECT SENSOR
(DECK B)
Q1002
27
B-SHUT
TC-MUTE
R/P-PASS
NR-ON/OFF
REC-MUTE
BIAS
EQ-H/N
PB-A/B
RELAY
A-PLAY-SW
B-PLAY-SW
A-HALF
28
S1006
(DECK B HALF)
S1009
(DECK B REC)
S1005
(DECK A REC)
D+5V
D+5V
B-HALF
82
CAP-H/N
CAPSTAN
MOTOR CONTROL
Q1531, 1532
TRIGGER
MOTOR CONTROL
Q1534, 1535
86
CAP-M-ON/OFF
94
95
C
• SIGNAL PATH
: PLAYBACK (DECK A)
: PLAYBACK (DECK B)
: RECORD
B-TRG
A-TRG
M
5
6
2
4
10
MOTOR
DRIVE
TRIGGER MOTOR DRIVE
IC1502
OUT1
VZ
OUT2
IN1
IN2
M2
(TRIGGER)
83
84
TRG-LOW
85
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