Sony SRF-M73 Service Manual ▷ View online
– 17 –
• IC Block Diagrams
– MAIN Board –
– MAIN Board –
IC1
CXA1238M-T6
IC2
LA3550MTP-1
IC3
LA4533M
VCO
REGULATOR
FM FRONT-END
AM FRONT-END
MPX
REGULATOR
MONO/STEREO
SELECT
DECORD
AMP
MUTING
AUTO
BLEND
TUNING
INDICATOR
AM IF/
DET
FM IF/
DISCRI
RIPPLE
FILTER
BAND-PASS
MUTE
1
27
28
29
30
24
25
26
21
22
23
18
19
20
16
17
2
3
4
5
6
7
8
9
PLL LPF1
PILOT DET LPF2
PILOT DET LPF2
ST IND/VCO CHECK
L-CH OUT
VCC
R-CH OUT
RIPPLE FILTER
AGC AFC1
10
AGC AFC2
13
FM IF IN
14
AM IF IN
15
BAND SELECT
11
GND
12
TUNE IND
1/2
COUNTER
1/2
COUNTER
PD1
PD2
FM/AM FE OUT
FM GND
FM RF IN
AM RF IN
FM RF
REG
FM OSC
AFC
AM OSC
MUTE
FM DISCRI
GND
PLL LPF2
MPX REG
VCO
ON/OFF
1
2
3
4
5
6
7
8
9
10
14
13
12
11
OUT-1
OUT-2
DET IN
DET OUT
REF
VCC
GND
LP-OUT
LP-GAIN
LP-IN
HP-2
HP-1
IN-2
IN-1
POWER
SWITCH
MUTE
BIAS
AMP
AMP
1
2
3
4
5
6
7
8
9
10 MUTE
R-OUT
GND
L-OUT
VCC
PWR
R-IN
GND
L-IN
REG
– 18 –
5-4.
IC PIN FUNCTION DESCRIPTION
•
Pin No.
Pin Name
I/O
Description
1
IF ON
O
Power on/off control signal output for the AM IF amplifier circuit “L”: power on
“L” is output when AM scan mode
“L” is output when AM scan mode
2
POWER
O
Power on/off control signal output for the radio system power supply “H”: power on
3
BAND
O
FM/AM band selection signal output terminal “L”: AM, “H”: FM
4
PULSE POWER
O
Power on/off control signal output for the pulse meter circuit “H”: power on
Not used (open)
Not used (open)
5
MUTE
O
Muting on/off control signal output to the headphone amplifier (IC3) “L”: muting on
6 to 9
KS0 to KS3
O
Key scan signal output for the key matrix
10 to 13
KR0 to KR3
I
Key return signal input for the key matrix
14
CK
O
Serial clock signal output to the EEPROM (IC105)
15
DATA
I/O
Two-way data bus with the EEPROM (IC105)
16
CS
O
Chip select signal output to the EEPROM (IC105)
17
AM IF IN
I
AM intermediate frequency detect signal input terminal
18
GND
—
Ground terminal
19
EO
O
PLL error signal output terminal
20
VCOL
I
AM VCO input terminal
21
VCOH
I
FM VCO input terminal
22
VREG1
—
Power supply terminal (connected to the coupling capacitor)
23
VDD
—
Power supply terminal (+3V)
24
XOUT
O
System clock output terminal (75 kHz)
25
XIN
I
System clock input terminal (75 kHz)
26
VREG2
—
Power supply terminal (connected to the coupling capacitor)
27
VLCD0
—
28
CAP0
—
29
CAP1
—
30
VLCD2
—
31 to 34
COM0 to COM3
O
Common drive signal output to the liquid crystal display (LCD101)
35 to 49
SEG0 to SEG14
O
Segment drive signal output to the liquid crystal display (LCD101)
50
CE
I
Power failure detection signal input from the voltage detect (IC102) Normally: “H”
51
PULSE IN
I
Pulse meter input terminal (detecting a falling edge) Not used (open)
52
BEEP
O
Beep sound drive signal output terminal
53
CMP IN
I
Scan stop detect signal input terminal
54 to 56
PB1 to PB3
I
Initialize signal input for the destination select (fixed at “L” in this set)
KEY BOARD IC101
µ
PD17073GB-556-1A7
(SYSTEM CONTROLLER, LIQUID CRYSTAL DISPLAY DRIVER, KEY CONTROL)
Terminal for doubler circuit capacitor connection to develop liquid crystal display drive voltage
– 19 –
SECTION 6
EXPLODED VIEW
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference num-
ber in the exploded views are not supplied.
• Accessories are given in the last of the elec-
trical parts list.
NOTE:
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color Cabinet's Color
A
14
13
15
17
18
16
12
9
11
10
8
7
6
5
3
4
2
23
24
22
8
20
19
L1
21
not
supplied
supplied
1
LCD101
CN101
not
supplied
supplied
B
B
A
C
C
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
X-3377-283-1 CABINET (FRONT) ASSY
2
1-771-677-21 SWITCH, RUBBER KEY
3
3-033-935-01 HOLDER (BUTTON)
4
3-033-940-01 BUTTON (POWER)
5
3-318-203-61 SCREW (B1.7X4), TAPPING
6
3-033-933-01 ADAPTOR
7
3-033-928-01 CABINET (REAR)
8
3-318-203-31 SCREW (B1.7X8), TAPPING
9
3-378-965-01 SPRING, RING
10
3-898-411-01 PACKING, KNOB
11
3-033-934-01 KNOB (VOL)
12
3-033-932-01 KNOB (A)
13
3-033-938-01 CLIP (A), BELT
14
3-033-939-01 CLIP (B), BELT
15
3-033-931-01 LID, BATTERY CASE
16
3-033-945-01 TERMINAL (+ -), BATTERY
17
3-033-944-01 TERMINAL (-), BATTERY
18
3-033-943-01 TERMINAL (+), BATTERY
* 19
A-3663-262-A MAIN BOARD, COMPLETE (US)
* 19
A-3663-288-A MAIN BOARD, COMPLETE (Panama)
20
3-378-515-01 BUSHING
21
3-033-937-01 HOLDER (BAR ANT)
* 22
A-3663-259-A KEY BOARD, COMPLETE
23
3-033-936-01 HOLDER (LCD)
24
3-036-200-01 SHEET, SHIELD
CN101
1-694-532-11 CONDUCTIVE BOARD, CONNECTION
L1
1-754-057-11 ANTENNA, FERRITE-ROD (AM)
LCD101 1-803-534-11 DISPLAY PANEL, LIQUID CRYSTAL
Ver 1.1
– 20 –
SECTION 7
ELECTRICAL PARTS LIST
Ref. No.
Part No.
Description
Remark
NOTE:
• Due to standardization, replacements in the
parts list may be different from the parts speci-
fied in the diagrams or the components used
on the set.
fied in the diagrams or the components used
on the set.
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
one.
• RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
• Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when order-
ing these items.
Some delay should be anticipated when order-
ing these items.
• SEMICONDUCTORS
In each case, u:
µ, for example:
uA. .
:
µA. .
uPA. . :
µPA. .
uPB. .
:
µPB. .
uPC. . :
µPC. .
uPD. .
:
µPD. .
• CAPACITORS
uF:
µF
• COILS
uH:
µH
Ref. No.
Part No.
Description
Remark
When indicating parts by reference
number, please include the board.
number, please include the board.
KEY
*
A-3663-259-A KEY BOARD, COMPLETE
********************
3-033-936-01 HOLDER (LCD)
3-036-200-01 SHEET, SHIELD
3-036-200-01 SHEET, SHIELD
< CAPACITOR >
C102
1-162-964-11 CERAMIC CHIP
0.001uF
10%
50V
C103
1-162-964-11 CERAMIC CHIP
0.001uF
10%
50V
C104
1-162-964-11 CERAMIC CHIP
0.001uF
10%
50V
C105
1-162-964-11 CERAMIC CHIP
0.001uF
10%
50V
C108
1-135-181-21 TANTALUM CHIP 4.7uF
20%
6.3V
C110
1-107-826-11 CERAMIC CHIP
0.1uF
10%
16V
C111
1-163-239-11 CERAMIC CHIP
33PF
5%
50V
C112
1-163-231-11 CERAMIC CHIP
15PF
5%
50V
C113
1-107-826-11 CERAMIC CHIP
0.1uF
10%
16V
C114
1-107-826-11 CERAMIC CHIP
0.1uF
10%
16V
C115
1-163-021-11 CERAMIC CHIP
0.01uF
10%
50V
C116
1-164-004-11 CERAMIC CHIP
0.1uF
10%
25V
C117
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C118
1-162-962-11 CERAMIC CHIP
470PF
10%
50V
C119
1-110-501-11 CERAMIC CHIP
0.33uF
10%
16V
C120
1-162-964-11 CERAMIC CHIP
0.001uF
10%
50V
C121
1-164-346-11 CERAMIC CHIP
1uF
16V
C122
1-163-235-11 CERAMIC CHIP
22PF
5%
50V
C123
1-163-038-00 CERAMIC CHIP
0.1uF
25V
C124
1-135-259-11 TANTALUM CHIP 10uF
20%
6.3V
C125
1-163-038-00 CERAMIC CHIP
0.1uF
25V
C126
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C151
1-162-964-11 CERAMIC CHIP
0.001uF
10%
50V
C152
1-162-964-11 CERAMIC CHIP
0.001uF
10%
50V
C153
1-162-964-11 CERAMIC CHIP
0.001uF
10%
50V
C154
1-162-964-11 CERAMIC CHIP
0.001uF
10%
50V
C156
1-163-017-00 CERAMIC CHIP
0.0047uF 5%
50V
C157
1-163-017-00 CERAMIC CHIP
0.0047uF 5%
50V
C158
1-163-251-11 CERAMIC CHIP
100PF
5%
50V
< CONDUCTIVE BOARD >
CN101
1-694-532-11 CONDUCTIVE BOARD, CONNECTION
< DIODE >
D105
8-719-988-61 DIODE 1SS355TE-17
D106
8-719-977-40 DIODE DTZ-TT11-13
< IC >
IC101
8-759-581-97 IC uPD17073GB-556-1A7
IC102
8-759-491-99 IC S-80822ALNP-EAB-T2
IC105
8-759-457-68 IC AK93C45AV-L
< SHORT >
JC102
1-216-864-11 METAL CHIP 0 5% 1/16W
JC104
1-216-864-11 METAL CHIP 0 5% 1/16W
JC106
1-216-864-11 METAL CHIP 0 5% 1/16W
< COIL >
L101
1-410-658-31 INDUCTOR CHIP 220uH
< DISPLAY PANEL >
LCD101 1-803-534-11 DISPLAY PANEL, LIQUID CRYSTAL
< TRANSISTOR >
Q101
8-729-402-19 TRANSISTOR XN6501
Q103
8-729-402-19 TRANSISTOR XN6501
Q104
8-729-402-16 TRANSISTOR XN4608
< RESISTOR >
R105
1-216-065-00 RES, CHIP
4.7K
5%
1/10W
R106
1-216-089-00 RES, CHIP
47K
5%
1/10W
R107
1-216-089-00 RES, CHIP
47K
5%
1/10W
R109
1-216-097-00 RES, CHIP
100K
5%
1/10W
R110
1-216-821-11 METAL CHIP
1K
5%
1/16W
R111
1-216-821-11 METAL CHIP
1K
5%
1/16W
R112
1-216-821-11 METAL CHIP
1K
5%
1/16W
R113
1-216-821-11 METAL CHIP
1K
5%
1/16W
R114
1-216-833-11 RES, CHIP
10K
5%
1/16W
R115
1-216-833-11 RES, CHIP
10K
5%
1/16W
R116
1-216-833-11 RES, CHIP
10K
5%
1/16W
R117
1-216-833-11 RES, CHIP
10K
5%
1/16W
R118
1-216-833-11 RES, CHIP
10K
5%
1/16W
R120
1-216-049-11 RES, CHIP
1K
5%
1/10W
R121
1-216-073-00 METAL CHIP
10K
5%
1/10W
R123
1-216-833-11 RES, CHIP
10K
5%
1/16W
R126
1-216-109-00 METAL CHIP
330K
5%
1/10W
R128
1-216-833-11 RES, CHIP
10K
5%
1/16W
R129
1-216-845-11 METAL CHIP
100K
5%
1/16W
R130
1-216-833-11 RES, CHIP
10K
5%
1/16W
R133
1-216-049-11 RES, CHIP
1K
5%
1/10W
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