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XR-5W497RB
3-2. BLOCK DIAGRAM — TAPE SECTION —
FWD
REV
TAPE
MECHANISM
04
EQ AMP/DOLBY NR
IC401
48
70U/120U
EQ
DOLBY
R-CH
AMP
NR
AUTO
MUSIC
SENSOR
46
R-CH
RADIO/TAPE
43
41
R-CH
RV431
DOLBY
LEVEL
L-CH
CN451
SW+B
3
TA +B
SW5V
7
TA 5V
INSERT
1
S-CLK
4
S-DATA
5
C-REQ
6
RESET
8
TA +B
Signal path
5V REG
TA 5V
: PB
Q452
– 11 –
TUNER
A
TAPE L
SECTION
SUB SYSTEM CONTROL
IC201 (2/2)
R/F
18
34
8
F/R
OSC 1
X201
17
27
METAL
8MHz
ON/OFF
14
35
DOLBY
OSC 2
9
37
XI
11
X202
32.768kHz
MS
21
36
XO
12
AMS
MS-GV
19
28
AMS GAIN
16
33
MUTE
EEP ROM
IC241
70
5
E2D
DATA
CLK
E2CK
68
6
TUNER ON
19
CDC-CTL
42
37 INSERT
30 SCL
LED
31
SDA
INDICATOR
25
DRIVE
32 CRQ
Q81
26 RESET
POWER
CONTROL
BATT
Q450,451
D OUT
41
29
D IN
40
TAPE ON
CLK
39
POWER
BATT
CONTROL
TU +B
Q231,232
8.5V REG
TU 8.5V
Q233
ISO701 (3/5)
16
BATT
CDC +B
D81
POWER
17
BATT
CDC-CLT
SWITCH
Q911,912
CDC DATA
14
OUT
CDC DOUT
Q702
CDC DATA
13
CDC DIN
IN
Q703
CDC CLK
15
CDC CLK
IN
Q704
– 12 –
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