Block Diagrams -Tape Section - Sony WM-GX400 Service Manual

WM-GX400
Q Q
3 7 6 3 1 5 1 5 0
4-2. BLOCK DIAGRAMS – TAPE SECTION –
MIC301
Flat Mic
J302
MIC
(PLUG IN POWER)
HRPE301
REC/PB/ERASE HEAD
L
FWD
R
R
REV
L
FWD
REV
VCC
T E
L 1 3 9 4 2 2 9 6 5 1 3
[DISPLAY BOARD] (2/3)
w w w
[MAIN BOARD] (1/2)
IC302
(1/2)
[DISPLAY BOARD] (1/3)
REC/PB AMP
MIC
MIC
MIC AMP
VCC
INPUT (L)
MIC
2
PB PRE
R-CH PRE AMP
D406 INPUT (L)
3 PR
REC DRIVE
REC
OUTPUT (L)
10
REC AMP
PB/REC
REFERENCE
VREF 1 REF SELECTOR
13
S301-3 S301
S301-4 FWD
REV
R-CH
S301-2
VREF
S302-2
S302-1
S302
VCC
REC
PB
S301-1
BIAS
OSC
Q334,336
VREF
ISS T331
SWITCH
Q335
S703 S707
BATT
ISS TUNING MODE
3 MANUAL
17 TUN MODE
2
PRESET
VCC 1
27 N/R SW
9 PB1
8 PB2
6 PA0
5 PA1
4 PA2
S708 S709 S710 S712
FM AM OFF ENTER
48
COM1
ND701
45 COM4
LIQUID
CRYSTAL 44 S1
DISPLAY
33 S2
R–CH IS OMITTED: SAME AS L–CH
x a o
. i
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IC302
B
(2/2)
REC DRIVE
MAIN
INPUT (L) REC
A
9 BOARD
SG
(2/2)
CURRENT
DETECT
17
OUT
- +
VSP
16
SPEED
RV601
DETECT
TAPE SPEED 2.4cm/S
IN+
15
RV602
TAPE SPEED 4.8cm/S
VREF SPEED CONTROL
14
REF
BIAS
S/S
Q Q
13
3 7
S303
BATT
PAUSE
ON
OFF
S706
TAPE SPEED
NORMAL
BATT
12 30 DOUBLE
PAUSE X2
MOTOR CTL 26
MOTOR BLK 10
AMP ON 19
TAPE 29
BATT
SYSTEM
22 2 DETECT 3 BATT
BATT
CONTROL
IC702
IC701
(1/2)
VERSION 13 VDD
REC 28
TUNING-A 18
TUNING-B 31
11
PUSH
C B A
COM
S701 (ROTALY)
TUNING
u 1 6 3
y
8 8
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2 4
8 9 9
WAVE-
U OUT
SOFT
4
FORM
V OUT
SWITCH
DETECT 5
PRE
W OUT
MOTIVE
6
DRIVE
LOGIC
MOTOR
BRAKE
Q601-603
MOTOR DRIVE/
SPEED CONTROL
IC301
6 3 1 5 1 5 0 8 9
VCC
MIC SWITCH REG
VCC Q356 Q501, 502
BATT
RADIO ON GATE Q354-355
MAIN
C
BOARD
(2/2) MUTE
m
c o
• Signal path.
E
.
a
N
2
8 9 9
U
V
M601
M
W CAPSTAN/REEL
MOTOR
COM
2 4 9 8 2 9 9
S601
(TAPE POWER)
DRY BATTERY
+
SIZE "AA"
(IEE DESIGNATION LR6)
-
2PCS, 3V
J501
DC IN 3V
: PB
: REC
: MIC