15
15
WM-FX700/FX890/FX900
6-1. BLOCK DIAGRAM
5
8
12
13
10
29
FM
DET
AM
DET
24
25
28
27
FM
OSC
1/8 or 1/16
AM
MIX
AM
OSC
Q302
REF
RF & RET
VREF
Q404,407
LPF
SW
16
15
14
21
22
19
23
7
26
20
23
30
55
32
33
45
49
66
62
63
28
1
20
26
33
43
56
22 - 5
1 - 4
58
42
70
56
55
61
11
29
39
36
46
59
44
35
29
2
1 OUT
VCC
32
21
2
7
10
5
3
4
18
19
6
17
VBATT
VBAT
Q604
VCCI
W
START
RV601
Q607(1/2)
CTL1
S801
(F/R SW)
REV
r
STOP
r
FWD
DR
V
U
W
COM
V
U
VBAT
L-CH
R-CH
FWD
R-CH
L-CH
REV
24
1
2
DRIVER
CONTROL
PRE
DRIVER
FM MPX
FM/AM/TV
PW SW
10
8
3
18
24
28
26
27
25
VREF
Q601, 603
MOTOR
BRAKE
RV602
SPEED CONTROL
TAPE SPEED
INVERTER
L1
FM-
RF
L1
FM
TRACKING
CT1,L5
AM
TRACKING
L3
FM-
OSC
L5
AM-OSC
L4
AM
BAR ANTENNA
D4
X1
(FM DISC)
D3
QUAD
CT1
D1
AM RF IN
FM/TV OSC
FMRFOUT
IF BAFF
FM
RF IN
FM-
IF IN
DET
OUT
MPX
IN
R-CH
AM-
MIX
AM-
IF IN
AM B/P
AM OSC
(VT)
OSC BUFF
CF2
(AM-IF)
Q1
VREF
Q306
AVLS
IC301
PRE/POWER
AMP
VCC
RF VCC
FWD-IN-L
FWD-
IN-R
RF-
OUT
REV-
IN-L
REF-OUT
REV-
IN-R
BASE
VCC
PRE
OUTA
PRE
OUTB
RV301
VOL
R-CH
Q303
PW
IN A
PW
IN C
BST OUT
BST-SW
45
PRE-SW
PW NF-L
PW NF-R
OUTA
VREF
OUTC
BEEP
F/R-SW
PW-SW
MT-SW
AMS-OUT
M/N-SW
R-CH
BEEP
54 F/R CTRL
34 AMP CTRL
46 AMS IN
MOTOR DIR
MOTOR START
MOTOR CTRL1
MOTOR CTRL2
MOTOR BREAK
69 MD SW (REV)
68 MD SW (STOP)
67 MD SW (FWD)
37
E2P CS
CS
VOUT
LX
CE
CK
D1
D0
39
E2P CLK
38
1
2
3
3
4
5
1
2
E2P DATA
TAPE
VDD
(+2.5V)
PHOTO IN
60
BATT
PHOTO CTL
PM CTL
IC701 (2/2)
SYSTEM
CONTROL
IC901
BATT LEVEL
DETECT
IC702
EEPROM
IC401
SWITCHING
REGULATOR
IC703
RESET
CF1
(FM IF)
IC1
FM/AM FRONT END
IF DET, FM MPX
IC701 (1/2)
SYSTEM
CONTROL
IC601
CAPSTAN/REEL
MOTOR DRIVE
LOUT
ROUT
LPF1
REQSW
OSC OUT
MODE-1
MODE-2
IF COUNT
MONO/STEREO
CUE REVIEW
PRE CTL
IF IN
MUTE CTL/IF REQ
BAND1
BAND2
OSC IN
MIC/RADIO
52 DO
AVLS CTL
MB CTL
65 RV CTL
64 MB/GRV CTL
VBAT
S1
I
S18
COM1
I
COM4
MAIN KEY
HOLD
RESET
XOUT
XIN
REMOTE KEY
57
R • DATA I/O
Q304
EQ SWITCH
X701
75KHz
R-CH
F701
2
4
FM-
MIX
LCD701
LIQUID
CRYSTAL
DISPLAY
KEY NETWORK
S701-709
S701
HOLD
ON
OFF
IN+
VREF
M601
CAPSTAN/REEL
MOTOR
S501-2
(ATS)
S501-1
(TAPE DET)
DRY BATTERY
SIZE"AA"
(IEC DESIGNATION LR6)
1PS,1.5V
RECHAGEABLE
BATTERY
NH-14WM
1.2V 1350mAh
HP901
PLAY BACK HEAD
J301
i
FM
MIX
Q2
BUFFER
Q3
MUTE
PLUNGER
DRIVE
Q703, 704
PHOTO REFLECTOR
SWITCH & BUFFER
Q701
Q401 - 403
OSC
T401, Q401 - 403
DC/DC CONVERTER
W2
W1
W1
W3
VBAT
Q406
T401
D404
D401
D403
VDD
(+2.5V)
PM901
(PLUNGER)
ROTATION DETECT
SENSOR
PH701
Q305
SWITCH
44
42
41
40
Q405
2
CTL2
Q607(2/2)
Q605
SWITCH
Q606
SWITCH
• Signal Path
: FM
: AM
: PB
• R-CH is omitted due to same as L-CH.
