Sony Walkman WM-FX661, Service Manual

Page: 9 / 24

SECTION 6
DIAGRAMS
— 9 — — 10 — — 11 — — 12 —
Pin No.
1 to 3
4 to 25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
I/O
O
O
O
O
O
O
O
I
I
I
I
I
O
I
O
I
I
I
I
O
O
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
Description
Common terminal.
Segment output terminal.
Remote control data output.
DDC control terminal (when DDC ON = L).
BAND control output (when AM = Hi-imp, when FM = L).
MUTE control terminal (when MUTE ON = L).
HEAD select terminal (when FWD = Hi-imp, when REV = L).
Tone control terminal (when BOOST ON = Hi-imp, when OFF = L).
IF REQ control terminal (when REQ = Hi-imp).
HOLDER detect input (when HOLDER CLOSE = H).
Communication request from the remote controller. (H = VCC).
HOLDER detect and TAPE error erase detect terminal.
TAPE rotating direction detect terminal.
Input when the key is pressed during HOLD (H = AD Vref).
Terminal for controlling the rotation detect circuit.
Rotation detect input.
AMS sensitivity select (when AMS = H, when BL.SKIP = L).
Tape sound existing or not-exiting detect (Music
exists: L, music does not exist: H.
Voltage detect input.
KEY input terminal.
Reference voltage of AD IN 1, 2.
LED output terminal.
E 2 PROM CS control terminal.
E 2 PROM DATA I/O.
E
2
PROM CLOCK terminal.
BEEP (when TC : 1.6 kHz, when CF : 3.0 kHz).
MOTOR control terminal.
MOTOR control terminal.
MOTOR control terminal.
REC circuit control output.
RADIO system control terminal (when RADIO ON = L).
Terminal for controlling AVLS (when ON = L).
AMP control output (when AMP ON = H).
Tone control terminal (when GRV = L, when MB = H).
PL control terminal.
TC/CF select output (when PRE OFF = H, when PRE ON = Hi-imp).
Terminal for controlling DOLBY circuit
(when OFF = H, when ON = Hi-imp).
DDC control terminal (ON at Hi-imp, OFF at L).
TUNER MONO/STEREO select terminal (MONO at H).
TEST terminal (Normal operation at L or NC).
IF input.
TUNER sensitivity select terminal (LOCAL at H, DX at L).
Phase comparator output.
External interrupt terminal.
Pre-scaler output (FM at H).
Power supply GND terminal.
Function
COM 1 to 3
S1 to 22
R DATA OUT
DDC1 CTL
BAND AM/FM
MUTE CTL
F/R CTL
BST CTL
IF REQ
HOLD SW
R DATA IN
HOLDER, TUME
F/R SW
HOLD SENS
PHOTO CTL
PHOTO IN
AMS CTL
AMS IN
BATT DET
KEY IN
AD Vref
LED CTL
CS
M DATA I/O
M CLOCK
BEEP
MOTOR CTL
MOTOR DIR
MOTOR BRK
REC CTL
RADIO CTL
AVLS CTL
AMP CTL
GRV/MB CTL
PM CTL
PRE AMP CTL
DOLBY CTL
DDC2 CTL
MONO/ST
TEST
IF IN
LOCAL/DX
DO
HOLD
PSC
GND
Circuit
Output
Output (Nch)
Output (Nch)
Output (Nch)
Output (Nch)
Output (Nch)
Output (Nch)
Input
Input
Input
Input
Input
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Ternary output
Ternary output
Ternary output
Ternary output
Output
Output
External interrupt
Remarks
VLD at High level.
Pull-up at outside
(TUNER side).
Pull-up at outside (Vref).
Pull-up at outside (Vcc).
Pull-up at outside (Vcc).
Pull-up at outside (Vcc).
Pull-up at outside (Vref).
Pull-up at outside (V
LCD
).
A/D input.
A/D input.
A/D input.
A/D input.
Pull-down at outside.
Pull-up at outside.
Open
Pin Name
COM 1 to 3
S1 to 22
P13-1
P13-2
P13-3
P14-0
P14-1
P14-2
P14-3
IN2
K0
K1
K2
K3
P1-1
P1-2
P1-3
P2-0/AD IN1
P2-1/AD IN2
P2-2
P2-3
P3-0
P3-1
P3-2
P3-3/BUZR
P4-0
P4-1
P4-1
P4-2
P4-3
P5-0
P5-1
P5-2
P5-3
P6-0
P6-1
P6-2
P6-3
MUTE
TEST
IF IN
DO1/OT
DO2
HOLD
PSC
GND
INT
—
—
H
Hi-imp
Hi-imp
Hi-imp
Hi-imp
L
Hi-imp
—
L
—
—
L
L
—
L
—
—
H
—
L
L
L
L
—
L
L
L
L
H
L
L
L
L
Hi-imp
Hi-imp
Hi-imp
L
—
—
L
—
H
—
—
ACT
—
—
—
L
—
L
—
Hi-imp
L
—
VCC
—
—
AD Vrcl
H
—
H
—
—
—
—
H
—
—
—
—
H
H
H
H
L
L
H
H
H
Hi-imp
Hi-imp
Hi-imp
—
—
—
—
—
—
H
—
Pin No.
70
71
72
73
74
75
76
77
78
79
80
I/O Description
Pre-scaler input.
AM local oscillator output.
Power supply voltage.
RESET terminal (H during operation).
Terminal to which external oscillator is connected.
Terminal to which external oscillator is connected.
Terminal to which external capacitor is connected
to stabilize crystal oscillator power supply.
Terminal to step-up power supply voltage for LCD drive.
Terminal to step-up power supply voltage for LCD drive.
Terminal to step-up power supply voltage for LCD drive.
Terminal for 1.5 V constant voltage power supply of LCD drive.
Function
FM IN
AM IN
VDD
RESET
XOUT
XIN
VXT
VLCD
C1
C2
VEE
Circuit Remarks Pin Name
FM IN
AM IN
VDD
RESET
XOUT
XIN
VXT
VLCD
C1
C2
VEE
INT
—
—
—
L
—
—
—
—
—
—
—
ACT
—
—
—
H
—
—
—
—
—
—
—
• IC1 TC9326F-051 6-1. BLOCK DIAGRAM
6-2. IC PIN FUNCTION DESCRIPTION
FUNCTION
KEY
S701
FM/AM RF,IF AMP
IC7
CAPSTAN
REEL
VCC1
T2
AM MIX
CF2
10.7MHz
CF3
450kHz 450kHz
MIX OUT 4
FM IF IN 3
AM IF IN 6
AM OSC L.P.F
Q16,17
L OUT 14
R OUT 15 R CH FWD
REV
L
L
VOLUME
RV301
R CH
GND
REMO
DATA
VCC
L CH
S1-5,7-11
ON
OFF
HOLD
DDC
CONT
S702
(F/R SW)
RADIO +B
SWITCH
Q18
SYSTEM CONTROL
IC1
2 5
MOT
O
R BRK
52
PH701
BRAKE
SWITCH
Q601,602
TAPE
SPEED
TAPE
RV601
START 8
DIR 6
IN 10
MOTOR SERVO
IC601
U 19
V 1
W 3
4 25
X IN
75
X OUT
74
X701
75kHz
1 3
COM1 COM3 S1 S22
16
LIQID CRYSTAL
DISPLAY
REMOTE
J701
: FM
• Signal Path
• R-CH is omitted
: PB
: AM
RECHRGEABLE
BATTERY
(NICKEL-CADMIUM)
NC-6WM IP1.2V
FM
LOCAL/DX
Q1
RF IN 1 6 MIX
5 OSC
8 RF OUT
FM FRONTEND
IC3
D2
D1
FM IF
AMP
Q4
CF1
10.7MHz
FM IF
AMP
Q6
FM IN 2
5 FM OUT
PRESCARER
IC2
PSC
7
L4
BAR ANT
AM RF 24
AM
LOCAL/DX
Q2
Q7
RF
AMP
T1
AM OSC
2
IF REQ
SWITCH
Q15
D3
D4
IF REQ 11
7 QUAD
17 VCO
VCO
RV1
CF4
10.7MHz
18 LP2A
19
LP2B
BAND
SELECT
Q5
5 VCC
Q8
Q304
VCC1
RADIO +B
SWITCH
Q7
VCC2 2.8V
16 LPF1
Q8
Q14
10 IF OUT
Q13
FWD 34
18
REV 33
F/R SW 26
NR SW 19
BST SW
62
16
47
BST IN
Q301
(2/2)
25 DET
Q301
(1/2)
PWR
AVLS
CONT
Q302
Q303
BEEP 60
MUTE SW
59
PW SW 58
AVLS 64
3
24
AMS
22
PRE SW
57
63
56
50
AVLS
PW C
AGC
AUDIO
POWER AMP
IC301
GND
COM
VCC1
ATS
S901
PLUNGER
DRIVE
Q701,702
PM901
PLUNGER
S703
(HOLDER)
65
LOCAL/DX
36
F/R SW
66
DO
68
PSC
70
FM IN
32
IF REQ
64
IF IN
71
AM IN
62
MONO/ST
54
RADIO CTL
30
F/R CTL
BST IN
DET
28
BAND AM/FM
60
DOLBY
CTL
31
BST
CTL
33
AMS IN
57
MB/GR
V CTL
40
AMS CTL
55
A
VLS CTL
56
AMP
CTL
29
MUTE
49
BEEP
59
PRE AMP
CTL
26
R DA
T
A
OUT
43
KEY
IN
58
PW CTL
67
W
AKE UP
37
HOLD SENS
41
HOLD SW
35
HOLDER SW
34
R DA
T
A
IN
Q21
IC6
M CS
46
DC-DC
CONV.
T3,Q9-11
REG
IC5
2 3
1
IC701
VCC1
VCC2
DDC2 CTL
61
(VCC) AD
REF
44
DDC1 CTL
27
EEPROM
IC4
3 4 2 1
M DA
T
A
I/O
47
M CLOCK
48
PH701
VCC2
Q704
PHOT
O CTL
38
PHOT
O IN
39
LED CTL
45
D5
BATT
MOT
O
R CTL
50
MOT
O
R DIR
51
LCD1
Q306
PW VCC
53
BASS 52
RF OUT 51