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5-1. BLOCK DIAGRAMS
HP601
PLAY BACK HEAD
Q101
INA
29
L-CH
Q201
FWD
INB
30
R-CH
R-CH
Q202
VREF
REV
5
L-CH
Q102
VREF
Q301
INV.
VBAT
COM
W
V
U
M601
CAPSTAN/REEL
MOTOR BLEAK
MOTOR
SWITCH
Q600–602
VBAT
Q603
SECTION 5
DIAGRAMS
S302
S303
AVLS
MEGA BASS
OFF t ON
ON t OFF
VBAT
VBAT
VREF
IC301
7
PRE/POWER
BST SW
AMP
Q305
RV301
AVLS
VOL
PRE
PW
OUTA
IN A
4
8
PW
IN C
PRE
21
OUTB
1
R-CH
BST OUT
22
RF & RET
MUTE
RF
BASE
VCC
OUT
26
25
16
Q703
VCC
VBAT
Q302
VBAT
REF
16
VCC
IC601
W
CAPSTAN/REEL
3
MOTOR DRIVE
V
1
U
19
START
VREF
10 7
RV601
TAPE SPEED
Q604
+2.5V
IC701 (1/2)
CONTROL
PH751
9 PHOTO CTRL
GATE
37
IN-PHOTO
Q751
VBAT
S601
(MD CONT)
FWD
1 FWD SW
r
2 FF SW
FF
r
REW
3 REW SW
r
4 REV SW
REV
PW NFA
9
PW NFB
10
Q303
OUTA
EQ SWITCH
19
OUTC
18
IC701 (2/2)
R-CH
PW MUTE
12
12
MUTE
PRE MUTE
13
10 PRE-AMP CTRL
17 AMP_CTRL
11
F/R CTRL
6 MOTOR CTRL
8 MOTOR SPEED
7 MOTOR BLK
8
9
9
SYSTEM
+2.5V
D701
(BATT)
BATT_CTL2
41
BATT_CTL3
42
NC
43
KEY_IN
16
ENDRESS MODE
39
+2.5V
XTO
28
X701
32.768KHz
XTI
29
BEEP
36
R-CH
R-CH
IC703
RESET
SYSTEM
BATT RET
CONTROL
14
4 OUT
VCC
5
BATT DET
15
BATT IN
13
38
TAPE DET
VBAT
+2.5V
VDD1
21
IC702
+2.5V
+2.5V
SWITCHING REG
VDD
23
+1.3V
LX
2 VOUT
CE
IC704
+1.3V REG
+1.3V
3 VCEN
VIN
2
WM-EX422
S703
Y
DIRECTION
S705
REW
S704
FF
S702
x
S701
HOLD B
ON
R
OFF
J301
i
+1.3V
S301
TAPE DET
BATT 1.5V
DRY BATTERY
SIZE"AA"
(IEC DESIGNATION LR6)
4
1PS,1.5V
3
• R-CH is omitted due to same as L-CH.
• Signal Path
: PB
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