Diagrams; Block Diagram; Ic Pin Function Description - Sony WM-FX661 Service Manual

SECTION 6

DIAGRAMS

6-1.

BLOCK DIAGRAM

FM/AM RF,IF AMP
FM FRONTEND
IC7
IC3 Q4 Q6
CF1 CF2
FM IF 10.7MHz FM IF 10.7MHz
RF IN MIX FM IF IN L OUT 14
1 6 3
AMP AMP
Q1
R OUT 15 R CH
FM
PRESCARER T2
LOCAL/DX IC2 AM MIX
CF3
450kHz 450kHz
OSC 5 2 FM IN AM IF IN QUAD 7
6
CF4
D2 FM OUT 5
10.7MHz
7 PSC
RF OUT 8 4 MIX OUT
D1 VCO 17
L4 RV1
D3
BAR ANT
Q7 VCO
RF
24 AM RF Q8 Q8
Q2 AMP
LP2A 18
AM
LOCAL/DX
T1
LP2B 19
Q16,17 AM OSC
D4
L.P.F AM OSC VCC
2 5
Q15 RADIO +B
2.8V
IF REQ
11 IF REQ
SWITCH
LPF1 16
Q14
IF OUT 10
Q13
S702
(F/R SW)
65 36 66 68 70 71 32 64
COM1 COM3 S1 S22
16
1 3 4 25 75 74 52
X701
75kHz
MOTOR SERVO
LIQID CRYSTAL BRAKE
IC601
DISPLAY SWITCH
Q601,602
LCD1 START 8
19 U
• R-CH is omitted DIR 6
REEL
• Signal Path 1 V
CAPSTAN
IN 10
: FM 3 W
: AM
VCC1
: PB
— 9 —
AUDIO
POWER AMP
IC301
PWR
18 16 3 57
VOLUME
RV301
FWD Q302 AVLS 63
Q303
L 34 FWD PW C 56
AVLS
Q301 64 AVLS AGC 50
CONT
(1/2)
REV DET DET 25 Q306
L 33 REV 58 PW SW
59 MUTE SW
60 BEEP
51 RF OUT PRE SW
52 BASS 22
PW VCC
53
26 F/R SW
Q5
NR SW Q301
19
(2/2)
BAND
62 BST SW BST IN BST IN 47
SELECT Q18
RADIO +B AMS
VCC1
SWITCH 24
Q304
Q7
VCC2
SWITCH
Q21
62 28 54 30 60 31 33 57 40 55 56 29 49 59 34
SYSTEM CONTROL
IC1
50 51 39 38 47 48 46 45
VCC2
3 4 2 1
EEPROM
D5
IC4
PH701 PH701 BATT
RV601
Q704
TAPE TAPE
SPEED
— 10 —
6-2.

IC PIN FUNCTION DESCRIPTION

• IC1 TC9326F-051
VCC Pin No. Function Pin Name I/O Circuit
VCC1
DATA
1 to 3 COM 1 to 3 COM 1 to 3
REMO
GND GND
4 to 25 S1 to 22 S1 to 22
COM
J701
L CH
REMOTE 26 R DATA OUT P13-1 O Output
R CH
27 DDC1 CTL P13-2 O Output (Nch)
28 BAND AM/FM P13-3 O Output (Nch)
29 MUTE CTL P14-0 O Output (Nch)
30 F/R CTL P14-1 O Output (Nch)
31 BST CTL P14-2 O Output (Nch)
32 IF REQ P14-3 O Output (Nch)
S901
ATS
33 HOLD SW IN2 I
34 R DATA IN K0 I
35 HOLDER, TUME K1 I
Q701,702
PLUNGER PM901 36 F/R SW K2 I
DRIVE PLUNGER
37 HOLD SENS K3 I
38 PHOTO CTL P1-1 O Input/Output
39 PHOTO IN P1-2 I Input/Output
40 AMS CTL P1-3 O Input/Output
41 AMS IN P2-0/AD IN1 I Input/Output
42 BATT DET P2-1/AD IN2 I Input/Output
43 KEY IN P2-2 I Input/Output
S1-5,7-11
44 AD Vref P2-3 I Input/Output
FUNCTION
KEY
45 LED CTL P3-0 O Input/Output
IC6
ON S701 46 CS P3-1 O Input/Output
HOLD
47 M DATA I/O P3-2 I/O Input/Output
OFF
48 M CLOCK P3-3/BUZR O Input/Output
S703
49 BEEP P4-0 O Input/Output
(HOLDER)
50 MOTOR CTL P4-1 O Input/Output
26 43 58 67 37 41 35
51 MOTOR DIR P4-1 O Input/Output
52 MOTOR BRK P4-2 O Input/Output
53 REC CTL P4-3 O Input/Output
54 RADIO CTL P5-0 O Input/Output
55 AVLS CTL P5-1 O Input/Output
56 AMP CTL P5-2 O Input/Output
57 GRV/MB CTL P5-3 O Input/Output
61 44 27
58 PM CTL P6-0 O Ternary output
59 PRE AMP CTL P6-1 O Ternary output
VCC1
RECHRGEABLE
BATTERY
T3,Q9-11 60 DOLBY CTL P6-2 O Ternary output
(NICKEL-CADMIUM)
DC-DC NC-6WM IP1.2V
VCC2
CONV.
61 DDC2 CTL P6-3 O Ternary output
62 MONO/ST MUTE O Output
IC701
REG
2 3 63 TEST TEST
DDC
IC5 2 5
CONT
64 IF IN IF IN
1
65 LOCAL/DX DO1/OT O Output
66 DO DO2
67 HOLD HOLD I External interrupt
68 PSC PSC
69 GND GND
INT ACT Description Remarks Pin No. Function
— — Common terminal. 70 FM IN
— — Segment output terminal. 71 AM IN
H — Remote control data output. VLD at High level. 72 VDD
Pull-up at outside 73 RESET
Hi-imp L DDC control terminal (when DDC ON = L).
(TUNER side). 74 XOUT
Hi-imp — BAND control output (when AM = Hi-imp, when FM = L). Pull-up at outside (Vref). 75 XIN
Hi-imp L MUTE control terminal (when MUTE ON = L). Pull-up at outside (Vcc).
76 VXT
Hi-imp — HEAD select terminal (when FWD = Hi-imp, when REV = L). Pull-up at outside (Vcc).
L Hi-imp Tone control terminal (when BOOST ON = Hi-imp, when OFF = L). Pull-up at outside (Vcc). 77 VLCD
Hi-imp L IF REQ control terminal (when REQ = Hi-imp). Pull-up at outside (Vref). 78
Input — — HOLDER detect input (when HOLDER CLOSE = H). Pull-up at outside (V ). 79
LCD
Input L VCC Communication request from the remote controller. (H = VCC). A/D input. 80 VEE
Input — — HOLDER detect and TAPE error erase detect terminal. A/D input.
Input — — TAPE rotating direction detect terminal. A/D input.
Input L AD Vrcl Input when the key is pressed during HOLD (H = AD Vref). A/D input.
L H Terminal for controlling the rotation detect circuit.
— — Rotation detect input. Pull-down at outside.
L H AMS sensitivity select (when AMS = H, when BL.SKIP = L).
Tape sound existing or not-exiting detect (Music
— — Pull-up at outside.
exists: L, music does not exist: H.
— — Voltage detect input.
H — KEY input terminal.
— — Reference voltage of AD IN 1, 2.
L H LED output terminal.
L — E 2 PROM CS control terminal.
L — E 2 PROM DATA I/O.
L — E 2 PROM CLOCK terminal.
— — BEEP (when TC : 1.6 kHz, when CF : 3.0 kHz).
L H MOTOR control terminal.
L H MOTOR control terminal.
L H MOTOR control terminal.
L H REC circuit control output.
H L RADIO system control terminal (when RADIO ON = L).
L L Terminal for controlling AVLS (when ON = L).
L H AMP control output (when AMP ON = H).
L H Tone control terminal (when GRV = L, when MB = H).
L H PL control terminal.
Hi-imp Hi-imp TC/CF select output (when PRE OFF = H, when PRE ON = Hi-imp).
Terminal for controlling DOLBY circuit
Hi-imp Hi-imp
(when OFF = H, when ON = Hi-imp).
Hi-imp Hi-imp DDC control terminal (ON at Hi-imp, OFF at L).
L — TUNER MONO/STEREO select terminal (MONO at H).
— — TEST terminal (Normal operation at L or NC). Open
— — IF input.
L — TUNER sensitivity select terminal (LOCAL at H, DX at L).
— — Phase comparator output.
H — External interrupt terminal.
— H Pre-scaler output (FM at H).
— — Power supply GND terminal.
— 11 —
Pin Name I/O Circuit INT ACT Description Remarks
FM IN — — Pre-scaler input.
AM IN — — AM local oscillator output.
VDD — — Power supply voltage.
RESET L H RESET terminal (H during operation).
XOUT — — Terminal to which external oscillator is connected.
XIN — — Terminal to which external oscillator is connected.
Terminal to which external capacitor is connected
VXT — —
to stabilize crystal oscillator power supply.
VLCD — — Terminal to step-up power supply voltage for LCD drive.
C1 C1 — — Terminal to step-up power supply voltage for LCD drive.
C2 C2 — — Terminal to step-up power supply voltage for LCD drive.
VEE — — Terminal for 1.5 V constant voltage power supply of LCD drive.
— 12 —