Sony ICFC-793, ICFC-793-L Service manual

ICF-C793/C793L

SERVICE MANUAL

Ver 1.1 1999. 06

Photo: ICF-C793L

SPECIFICATIONS

US Model

Canadian Model

E Model

Australian Model

ICF-C793

AEP Model

ICF-C793/C793L

UK Model

ICF-C793L

MICROFILM

ICF-C793

FM/AM PLL SYNTHESIZED CLOCK RADIO

ICF-C793L

FM/MW/LW PLL SYNTHESIZED CLOCK RADIO

TABLE OF CONTENTS

1. SERVICING NOTES ................................................ 3

2. GENERAL ................................................................... 4

3. DISASSEMBLY ......................................................... 6

4. ELECTRICAL ADJUSTMENTS......................... 7

5. DIAGRAMS

5-1. Block Diagram ................................................................ 9

5-2. IC Pin Function Description........................................... 11

5-3. Schematic Diagram......................................................... 13

5-4. Printed Wiring Boards (SUFFIX-11) ............................. 15

5-5. Printed Wiring Boards (SUFFIX-12) ............................. 17

6. EXPLODED VIEWS ................................................ 19

7. ELECTRICAL PARTS LIST ............................... 21

SAFETY CHECK-OUT

After correcting the original service problem, perform the follow­ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.

LEAKAGE TEST

The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.

1. A commercial leakage tester , such as the Simpson 229 or RCA
WT -540A. Follo w the manufacturers’ instructions to use these
instruments.

2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indica­tion is 0.75 V, so analog meters must have an accurate low­voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex­amples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2 V AC range are suit­able. (See Fig. A)

To Exposed Metal
Parts on Set

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be dam­aged by heat.

AC

1.5 k

0.15 µF

Fig. A. Using an AC voltmeter to check AC leakage.

Ω

Earth Ground

voltmeter
(0.75 V)

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK ! OR DOTTED
LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANU AL OR IN SUPPLEMENTS PUB­LISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE !
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM­POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

– 2 –

CF2

CF3

mark

SECTION 1

SERVICING NOTES

• Discrimination of MAIN board

– MAIN BOARD (Component Side) –

1-671-839-11

or

1-671-839-12

HOW TO CHANGED THE CERAMIC FILTERS

This model is used two ceramic filters of CF2 and CF3.
You must used same type of color marked ceramic filters in order
to meet same specifications.
Therefore, the ceramic filter must changed two pieces together
since it’s supply two pieces in one package as a spare parts.

Mark Center frequency

red 10.70 MHz

blue 10.67 MHz

orange 10.73 MHz

black 10.64 MHz

white 10.76 MHz

– 3 –

LOCATION OF CONTROLS

SECTION 2

GENERAL

This section is extracted from
instruction manual.

– 4 –

– 5 –

SECTION 3

)

t

DISASSEMBLY

Note: Follow the disassembly procedure in the numerical order given.

CHASSIS ASSY

7

chassis assy

5

Break the soldering of
speaker lead.

6

button (DST)

2

claw

4

connector
(CN301)

3

rear cabinet

1

four screws (P3 × 14

2

three claws

POWER CORD SETTING

Set the power cord as illustrated below,
then install the cabinet.

Put the secondary flat cable
between bosses to fix.

power cord

1

screw (P3 × 14)

6

knob (brightness)

rear cabine

boss

rear cabinet

power cord

– 6 –

SECTION 4

r

ELECTRICAL ADJUSTMENTS

0 dB = 1 µV

[FM]

Setting:

Band switch: FM

FM RF signal

generator

22.5 kHz frequency
deviation by 400 Hz
signal
Output level: as low as possible

[AM (MW/LW)*]
*AM : ICF-C793

MW/LW: ICF-C793L

Setting:

Band switch: AM (MW/LW)

AM RF signal

generator

30% amplitude
modulation by
400 Hz signal
Output level: as low as possible

Put the lead-wire
antenna close to
the set.

TP (FM-IN)

0.01 µF

set

MAIN board
TP (SP +)

level meter

8

Ω

set

MAIN board TP (SP GND)

MAIN board
TP (SP +)

level meter

8

Ω

+
–

MAIN board TP (SP GND)

FM VCO VOLTAGE ADJUSTMENT

Adjustment Part Frequency Display Reading on Digital Voltmeter

L4 87.5 MHz 3 V ± 0.1V

Confirmation 108 MHz Less than 11.8 V

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

+
–

Adjustment Part Frequency Display Reading on Digital Voltmeter

Confirmation

Adjustment Part Frequency Display Reading on Digital Voltmeter

Confirmation 279 kHz Less than 9.5 V

L3 87.5 MHz

TC3 108 MHz

AM (MW) VCO VOLTAGE ADJUSTMENT

L5 530 kHz (531kHz *1) 2.65 V ± 0.1V

1,710 kHz

(1,602 kHz *1)

AM (MW) TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L1 (L1-1 *2) 580 kHz (621 kHz *1)

TC1 1,490 kHz (1,404 kHz *1)

LW VCO V OLTAGE ADJUSTMENT *2

TC4 153 kHz 2.25 V ± 0.05V

Less than 10 V (9.5 V *1)

• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.

• Remove FM antenna in FM adjustments.

digital voltmete

MAIN board

TP (VT)

+
–

Adjustment Location: Main Board (See page 8)

LW TRA CKING ADJUSTMENT *2

Adjust for a maximum reading on level meter.

L1-2 162 kHz

TC2 243 kHz

AM IF ADJUSTMENT

Adjust for a maximum reading on level meter.

T1 450 kHz

*1) Except US, Canadian models
*2) ICF-C793L

– 7 –

Adjustment Location:

– MAIN BOARD (Component Side) – – MAIN BOARD (Conductor Side) –

TC4 LW VCO V oltage Adjustment

L5 AM (MW) VCO Voltage Adjustment

L4 FM VCO Voltage Adjustment

T1 AM IF

L3 TC3

FM T rac king Adjustment

*) ICF-C793L

*

TC2 L1-2 L1 (L1-1*)

LW Trac king Adjustment

TC1 AM (MW) Tracking Adjustment

TP (VT)

*

TP (SP+)

TP (SP GND)

TP (FM-IN)

AM (MW) Tracking Adjustment

– 8 –

SECTION 5

DIAGRAMS

ICF-C793/C793L

5-1. BLOCK DIAGRAM

ANT1

FM LEAD

ANTENNA

(C793)

L1

L1-1

(MW)

(C793L)

AM (MW/LW)
FERRITE-ROD

ANTENNA

L1-2
(LW)

LW TRACKING

L1-2, TC2

TC2

L1, TC1

AM TRACKING

Q1
MW/LW
SWITCH

D1-2

05

B.P.F.

BPF1

(C793L)

L1-1, TC1

MW TRACKING

TC1

X50

75kHz

XOUT

1

XIN

2

FM TRACKING

L3

FM RF

(C793)

D4-1

D1-1

(C793L)

LOW-PASS FILTER

Q50, 51

X1

22 23

X101

4.19MHz

L3, TC3

D2

AM (MW) VCO VOLTAGE

L5

AM (MW/LW)

OSC

VOLTAGE

(C793L)

15

PD1

X2

XT1

19 20

X100

32.768kHz

TC4

LW VCO

MW/LW
SWITCH

DA

5

4

27

26

DATA

XT2

CK

CLK

5-2. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC100 µPD753106GC-053-AB8 (SYSTEM CONTROLLER, LCD DRIVER, KEY CONTROL)

Pin No. Pin Name I/O Description

1 BIAS O

2 to 4 VLC0 to VLC2 —

5NCO

6 ALM A O

7 ALM B O

8 KS4 O

9 VSS —
10 to 13 KS0 to KS3 O
14 to 17 KR0 to KR3 I

18 RESET I

19 XT1 I
20 XT2 O
21 IC —
22 X1 I
23 X2 O
24 VDD —
25 NC I
26 CLK O
27 DATA O
28 PDET I

29 to 31 PI0 to PI2 I

32 TEST I
33 MUTE O
34 CE O
35 BZ-CTRL O

36 BUZZER O
37 to 60 S23 to S0 O
61 to 64 COM0 to COM3 O

Liquid crystal display drive bias control output terminal
Terminal for doubler circuit capacitor connection to develop liquid crystal display drive voltage
Not used (open)

LED drive signal output of the LCD back light LED (D74)
“H” output at alarm A setting (LED on)

LED drive signal output of the LCD back light LED (D75)
“H” output at alarm B setting (LED on)

Key scan signal output of the key matrix (S101, S201 to S218)
Ground terminal
Key scan signal output of the key matrix (S101, S201 to S218)
Key return signal input of the key matrix (S101, S201 to S218)

System reset signal input from the reset signal generator (IC101) “L”: reset
“L” is input for several 100 msec after power on, then it changes to “H”

Sub system clock input terminal (32.768 kHz)
Sub system clock output terminal (32.768 kHz)
Connected to power supply (+3.8V)
Main system clock input terminal (4.19 MHz)
Main system clock output terminal (4.19 MHz)
Power supply terminal (+3.8V)
Not used (open)
PLL serial data transfer clock signal output to the FM/AM PLL (IC50)
PLL serial data output to the FM/AM PLL (IC50)
Power failure detection input terminal “L”: power failure
Destination setting terminal *1
Test mode input terminal “L”: test mode Not used (open)
Muting on/off control signal output terminal “L”: muting on
PLL serial chip enable signal output to the FM/AM PLL (IC50)
Buzzer control signal output terminal “H” output at alarm B active
Beep sound (2 kHz) drive signal output to the CXA1019M (IC1)
Segment drive signal output to the liquid crystal display (LCD100)
Common drive signal output to the liquid crystal display (LCD100)

*1

ICF-C793

ICF-C793L

US, Canadian AEP, Singapore Australian French UK
PI0 (pin @ª)
PI1 (pin #º)
PI2 (pin #¡)

“H” “H” “H” “H” “L”
“H” “L” “H” “L” “H”
“H” “H” “L” “L” “H”

VR1
VOL

REGULATOR

Q57

• SIGNAL PATH
: FM

: AM (MW/LW)

RECT

D351 – 354

RECT
D355

SP301

(SPEAKER)

T301

POWER

TRANSFORMER

AC IN

CF3

FM

IF AMP

AM IF AMP,

AGC, DET

TUNING METER

LED DRIVE

Q53, 54

6

ALM A

10.7MHz

DISCRIMINATOR

METER

19

D75

B BUZZER

7

ALM B

KS0 – KS4

10 – 13, 8

S101, 201 – 218

(KEY MATRIX)

2

FM
DISCRI

FM

BRIGHTNESS

D70 – 73

(LCD BACK LIGHT)

S50

D60, 61

KR0 – KR3

14 – 17

DET
OUT

23

+

(C793L)

B+

–2

HIGH

LOW

–1

18

BACKUP B+

(SYSTEM CONTROLLER IC100 B+)

RESET

Q5

TONE

CONTROL

SWITCH

RESET SIGNAL

GENERATOR

IC101

24

D102

AF
IN

35

BZ-CTRL

AF

POWER AMP

NF

VOL

3 4

36

BUZZER

D100

B+

VT B+

MUTING

Q4

33

MUTE

D101

OUT

28

AF

27

PDET

TC3

FM RF
IN

12

AM RF
IN

10

L5

Q3

CE

3

34

CE

FM

FRONT-END

AM

FRONT-END

AM OSC

TC4

FM/AM PLL

IC50

S0 – S23

60 – 37

LIQUID CRYSTAL DISPLAY

LCD100

FM/AM FRONT-END,

FM/AM IF AMP, DET, AGC, AF AMP

9

FM
RF

5 7

(C793)

D4-2

D1-3

(C793L)

COM0 – COM3

+

11

61 – 64

IC1

FM/AM

FE OUT

14 17

FM OSC

FM VCO VOLTAGE

12

FM IN

AM IN

L4

D3

P1

BIAS

1

(SUFFIX–12)

(SUFFIX–11)

CF2

10.7MHz

T1

AM IF

L4

FM OSC

(C793L)

VOLTAGE GENERATOR

CF1

450kHz

78

P0

LCD REFERENCE

IC102

LCD DRIVER, KEY CONTROL

16

Q52
MW/LW
SWITCH

CONTROL

B+

SYSTEM CONTROLLER,

IC100

VLC03VLC14VLC2

2

FM
IF IN

AM
IF IN

FM/AM

BAND

SELECT

15

D74

A RADIO

(LCD BACK LIGHT)

D74 D75

– 9 –

– 10 –

– 11 –

ICF-C793/C793L

5-3. SCHEMATIC DIAGRAM

• IC Block Diagrams
– MAIN board –

IC1 CXA1019M

FM/AM

IF OUT

14 13

15

SELECT

FM/AM BAND

FE GND

16

AM IF IN

FM RF IN

12

FM IF

17

FM IF IN

NC

11

TUNING METER

18

NC

IC50 BU2614FS

PD1

VSS

16 12131415

VDD1

AM RF IN

FM RF

10 9 8 7 2 16 5 34

20

19

IF GND

METER

AM IN

VDD2

FM IN

11

FM OSC

REG OUT

FM FE

FM

DISCRIMINATOR

AM FE

AM IF DET AGC

21

22

AFC AGC

AFC AGC

P2

10

9

IF-IN

AFC

23

DET OUT

24

AM OSCNFVOL

25

AF IN

RIPPLE FILTER

AF POWER AMP

26

VCC

FM DISCRI

27

AF OUT

• Waveforms
– MAIN board –

1 IC50 2 (X IN)

1 V/DIV, 10 µs/DIV

GND

1.9 Vp-p

13.3 µs

2 IC100 !ª (XT1)

28

GND

1 V/DIV, 20 µs/DIV

2 Vp-p

PHASE

DETECT

XOUT

MAIN CONTROL

PRESCALLER

I/O CONTROL

REGISTER

CE

XIN

OUTPUT

CONTROL

5

4

61 2 3 7

CK

DA

CD

P0

COUNTER

8

P1

IF

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.

• All resistors are in Ω and 1/
specified.

¢

•

: internal component.

4

W or less unless otherwise

• C : panel designation.

Note:

The components identi­fied by mark ! or dotted
line with mark ! are criti­cal for safety.
Replace only with part
number specified.

Note:

Les composants identifiés par
une marque ! sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro
spécifié.

30.5 µs

*3 IC100 @™ (X1)

1 V/DIV, 500 ms/DIV

2 Vp-p

238.7 ns

*Note:

• Press either [+] or [–] key when RADIO is being
operated, oscillation will be given out for 250 ms .

• Oscillation will be given out for 250 ms when the
power is turned on.

• U : B+ Line.

• H : adjustment for repair.

• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
( ) : AM (MW/LW)

• Voltages are taken with a VOM (Input impedance 10 M Ω).
Voltage variations may be noted due to normal produc­tion tolerances.

• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc­tion tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F : FM
f : AM (MW/LW)

• Abbreviation
AUS : Australian model
CND : Canadian model
FR : French model
SP : Singapore model

-11 : Suffix-11

-12 : Suffix-12

– 12 –

– 13 –

– 14 –

SECTION 6

SP301

4

1

9

8

7

1

2

3

5

6

1

10

T301

not supplied

AEP, FR, SP

US, CND

UK

AUS

EXPLODED VIEWS

NOTE:

• -XX and -X mean standardized parts, so they
may have some difference from the original
one.

• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)

↑↑

Parts Color Cabinet's Color

• Abbreviation
AUS : Australian model
CND: Canadian model
FR : French model
SP : Singapore model

(1) CABINET SECTION

• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.

• The mechanical parts with no reference num­ber in the exploded views are not supplied.

• Accessories and packing materials are given
in the last of the electrical parts list.

The components identified by
mark ! or dotted line with mark
! are critical for safety.
Replace only with part number
specified.

Les composants identifiés par une
marque ! sont critiquens pour la
sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.

Ref. No. Part No. Description Remark

1 7-685-649-79 SCREW +P 3X14 TYPE2 NON-SLIT
2 3-368-852-01 FOOT
3 X-3377-454-1 CABINET (FRONT) SUB ASSY (C793: AEP, SP,

3 X-3377-083-1 CABINET ASSY (C793: US, CND)
3 X-3377-215-1 CABINET ASSY (C793L)

4 3-032-463-01 BUTTON (DST)

* 5 1-671-842-11 TRANSFORMER BOARD

6 3-032-458-01 CABINET (REAR)
7 3-032-462-01 BUTTON (ALARM)
8 3-032-465-01 PANEL (ALARM)

AUS)

Ref. No. Part No. Description Remark

9 3-032-460-01 KNOB (BRIGHTNESS)

! 10 1-555-795-00 CORD, POWER (C793: AEP, SP/C793L: FR)
! 10 1-696-572-21 CORD, POWER (C793L: UK)
! 10 1-783-817-11 CORD, POWER (C793: US, CND)
! 10 1-790-431-11 CORD, POWER (C793: AUS)

SP301 1-504-748-21 SPEAKER (6.6cm)

! T301 1-433-600-11 TRANSFORMER, POWER (C793: US, CND)
! T301 1-433-601-11 TRANSFORMER, POWER

(C793: AEP, SP, AUS/C793L)

– 19 –

(2) CHASSIS SECTION

54

55

56

LCD100

not supplied

ANT1

not supplied

57

53

52

58

54

L1

59

51

Ref. No. Part No. Description Remark
* 51 1-671-841-11 ALARM KEY BOARD

52 3-032-464-01 HOLDER (LCD)
53 A-3663-208-A MAIN BOARD, COMPLETE (C793: US, CND)
53 A-3663-266-A MAIN BOARD, COMPLETE (C793: AUS)
53 A-3663-268-A MAIN BOARD, COMPLETE (C793: AEP, SP)

53 A-3663-272-A MAIN BOARD, COMPLETE (C793L: FR)
53 A-3663-275-A MAIN BOARD, COMPLETE (C793L: UK)
54 7-685-649-79 SCREW +P 3X14 TYPE2 NON-SLIT
55 3-032-461-01 BUTTON (MAIN)

– 20 –

Ref. No. Part No. Description Remark
* 56 1-671-840-11 MAIN KEY BOARD

57 3-032-459-01 CHASSIS
58 3-919-268-01 KNOB (VOL)
59 3-033-972-01 HOLDER, FERRITE-ROD ANTENNA
L1 1-754-039-11 ANTENNA, FERRITE-ROD (AM) (C793)

L1 1-754-040-11 ANTENNA, FERRITE-ROD (LW/MW) (C793L)
LCD100 1-803-446-11 DISPLAY PANEL, LIQUID CRYSTAL
ANT1 1-501-907-21 ANTENNA, FM WIRE (FM LEAD ANTENNA)

SECTION 7

ELECTRICAL PARTS LIST

ALARM KEY MAIN

NOTE:

• Due to standardization, replacements in the
parts list may be different from the parts speci­fied 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.

• RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable

• Abbreviation
AUS : Australian model
CND: Canadian model
FR : French model
SP : Singapore model

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
* 1-671-841-11 ALARM KEY BOARD

S201 1-553-856-00 SWITCH, KEYBOARD (–, ALARM TIME)
S202 1-553-856-00 SWITCH, KEYBOARD (+, ALARM TIME)
S203 1-553-856-00 SWITCH, KEYBOARD (B, ON/OFF)
S204 1-553-856-00 SWITCH, KEYBOARD (–, ALARM TIME)
S205 1-553-856-00 SWITCH, KEYBOARD (+, ALARM TIME)

S206 1-553-856-00 SWITCH, KEYBOARD (A, ON/OFF)

*************************************************************

A-3663-208-A MAIN BOARD, COMPLETE (C793: US, CND)
A-3663-266-A MAIN BOARD, COMPLETE (C793: AUS)
A-3663-268-A MAIN BOARD, COMPLETE (C793: AEP, SP)
A-3663-272-A MAIN BOARD, COMPLETE (C793L: FR)
A-3663-275-A MAIN BOARD, COMPLETE (C793L: UK)

3-032-464-01 HOLDER (LCD)

ANT1 1-501-907-21 ANTENNA, FM WIRE (FM LEAD ANTENNA)

-11 : Suffix-11

-12 : Suffix-12

****************

< SWITCH >

*********************

< ANTENNA >

• Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when order­ing 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

C21 1-126-963-11 ELECT 4.7uF 20% 50V
C22 1-126-964-11 ELECT 10uF 20% 50V
C23 1-163-063-00 CERAMIC CHIP 0.022uF 10% 50V
C24 1-164-004-11 CERAMIC CHIP 0.1uF 10% 25V

C25 1-163-989-11 CERAMIC CHIP 0.033uF 10% 25V

C26 1-126-964-11 ELECT 10uF 20% 50V
C27 1-163-085-00 CERAMIC CHIP 2PF 50V
C28 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
C29 1-163-227-11 CERAMIC CHIP 10PF 0.5PF 50V

C29 1-163-229-11 CERAMIC CHIP 12PF 5% 50V

C30 1-126-960-11 ELECT 1uF 20% 50V
C31 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
C32 1-163-132-00 CERAMIC CHIP 430PF 5% 50V
C33 1-163-989-11 CERAMIC CHIP 0.033uF 10% 25V

C34 1-163-227-11 CERAMIC CHIP 10PF 0.5PF 50V

C41 1-126-934-11 ELECT 220uF 20% 10V
C42 1-128-551-11 ELECT 22uF 20% 25V
C43 1-109-982-11 CERAMIC CHIP 1uF 10% 10V
C44 1-109-982-11 CERAMIC CHIP 1uF 10% 10V

The components identified by
mark ! or dotted line with mark
! are critical for safety.
Replace only with part number
specified.

Les composants identifiés par une
marque ! sont critiquens pour la
sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.

When indicating parts by reference
number, please include the board.

(C793L)

(C793)

(C793L)

(C793L)

< BAND PASS FILTER >

BPF1 1-236-711-21 FILTER, BAND PASS

< CAPACITOR >

C1 1-163-253-11 CERAMIC CHIP 120PF 5% 50V

(C793L)
C6 1-163-251-11 CERAMIC CHIP 100PF 5% 50V
C7 1-163-141-00 CERAMIC CHIP 0.001uF 5% 50V
C8 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
C9 1-163-224-11 CERAMIC CHIP 7PF 0.25PF 50V

C11 1-163-141-00 CERAMIC CHIP 0.001uF 5% 50V
C12 1-163-133-00 CERAMIC CHIP 470PF 5% 50V

(C793L)
C15 1-163-251-11 CERAMIC CHIP 100PF 5% 50V

(C793: US, CND)

C16 1-163-251-11 CERAMIC CHIP 100PF 5% 50V

(C793: US, CND)

C17 1-163-251-11 CERAMIC CHIP 100PF 5% 50V

(C793: US, CND)

C20 1-163-059-91 CERAMIC CHIP 0.01uF 10% 50V

C45 1-126-934-11 ELECT 220uF 20% 10V
C46 1-163-263-11 CERAMIC CHIP 330PF 5% 50V

(C793L)
C47 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
C48 1-163-077-00 CERAMIC CHIP 0.1uF 10% 25V
C50 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V

C51 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C53 1-110-501-11 CERAMIC CHIP 0.33uF 10% 16V
C54 1-163-125-00 CERAMIC CHIP 220PF 5% 50V
C55 1-126-935-11 ELECT 470uF 20% 6.3V
C56 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V

(C793L)

C57 1-164-489-11 CERAMIC CHIP 0.22uF 10% 16V
C59 1-163-231-11 CERAMIC CHIP 15PF 5% 50V
C60 1-163-231-11 CERAMIC CHIP 15PF 5% 50V
C62 1-126-934-11 ELECT 220uF 20% 10V
C63 1-163-125-00 CERAMIC CHIP 220PF 5% 50V

C66 1-164-489-11 CERAMIC CHIP 0.22uF 10% 16V
C100 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C101 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C103 1-164-004-11 CERAMIC CHIP 0.1uF 10% 25V

– 21 –

MAIN

Ref. No. Part No. Description Remark

C104 1-125-691-11 DOUBLE LAYER 0.022F 5.5V

C107 1-163-235-11 CERAMIC CHIP 22PF 5% 50V
C108 1-163-235-11 CERAMIC CHIP 22PF 5% 50V
C110 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
C111 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
C113 1-163-133-00 CERAMIC CHIP 470PF 5% 50V

C114 1-163-133-00 CERAMIC CHIP 470PF 5% 50V
C115 1-163-133-00 CERAMIC CHIP 470PF 5% 50V
C116 1-163-133-00 CERAMIC CHIP 470PF 5% 50V
C117 1-163-133-00 CERAMIC CHIP 470PF 5% 50V
C118 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V

C121 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C351 1-126-927-11 ELECT 2200uF 20% 10V
C352 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
C353 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
C354 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V

C355 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
C356 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V
C357 1-104-666-11 ELECT 220uF 20% 25V

< FILTER >

* CF1 1-577-319-11 FILTER, CERAMIC (450kHz) (C793)

CF1 1-578-677-21 FILTER, CRYSTAL (450kHz) (C793L)
CF2 1-579-632-41 FILTER, CERAMIC (10.7MHz)
CF3 1-579-632-41 FILTER, CERAMIC (10.7MHz)

< CONNECTOR >

* CN704 1-568-271-11 SOCKET, CONNECTOR 5P

< DIODE >

D1 8-719-057-59 DIODE SVC354S-TR (C793L)
D2 8-713-100-11 DIODE 1T362
D3 8-713-100-11 DIODE 1T362
D4 8-719-072-59 DIODE SVC347S-TL (C793)
D7 8-719-074-44 DIODE 1SS120RX (C793: US, CND)

D8 8-719-074-44 DIODE 1SS120RX (C793: US, CND)
D50 8-719-976-99 DIODE DTZ5.1B
D60 8-719-988-61 DIODE 1SS355TE-17
D61 8-719-988-61 DIODE 1SS355TE-17
D70 8-719-950-41 LED GL-3EG43 (LCD BACK LIGHT)

D71 8-719-950-41 LED GL-3EG43 (LCD BACK LIGHT)
D72 8-719-950-41 LED GL-3EG43 (LCD BACK LIGHT)
D73 8-719-950-41 LED GL-3EG43 (LCD BACK LIGHT)
D74 8-719-075-78 LED TLYE262A (K51.SOY.P)

(A RADIO, LCD BACK LIGHT)

D75 8-719-075-78 LED TLYE262A (K51.SOY.P)

(B BUZZER, LCD BACK LIGHT)

D100 8-719-074-44 DIODE 1SS120RX
D101 8-719-988-61 DIODE 1SS355TE-17
D102 8-719-988-61 DIODE 1SS355TE-17
D351 8-719-031-85 DIODE 1N4002L
D352 8-719-031-85 DIODE 1N4002L

D353 8-719-031-85 DIODE 1N4002L
D354 8-719-031-85 DIODE 1N4002L
D355 8-719-074-44 DIODE 1SS120RX

Ref. No. Part No. Description Remark

< IC >

IC1 8-752-050-16 IC CXA1019M
IC50 8-759-188-85 IC BU2614FS
IC100 8-759-571-48 IC uPD753106GC-053-AB8
IC101 8-759-580-04 IC S-80820ALUP-EAH-T2
IC102 8-759-939-41 IC S-81230AG-RB (-12)

< SHORT >

JC1 1-216-296-00 SHORT 0
JC2 1-216-296-00 SHORT 0
JC3 1-216-296-00 SHORT 0
JC4 1-216-296-00 SHORT 0
JC5 1-216-296-00 SHORT 0

JC6 1-216-296-00 SHORT 0
JC8 1-216-295-00 SHORT 0
JC9 1-216-296-00 SHORT 0
JC10 1-216-296-00 SHORT 0
JC11 1-216-296-00 SHORT 0

JC12 1-216-296-00 SHORT 0
JC13 1-216-296-00 SHORT 0
JC14 1-216-296-00 SHORT 0
JC15 1-216-296-00 SHORT 0
JC18 1-216-296-00 SHORT 0

JC19 1-216-296-00 SHORT 0
JC20 1-216-296-00 SHORT 0
JC21 1-216-296-00 SHORT 0
JC22 1-216-296-00 SHORT 0
JC23 1-216-295-00 SHORT 0 (C793L)

JC24 1-216-296-00 SHORT 0
JC61 1-216-296-00 SHORT 0 (C793: US, CND)
JC62 1-216-296-00 SHORT 0 (C793: US, CND)
JC63 1-216-296-00 SHORT 0
JC99 1-216-295-00 SHORT 0

JC128 1-216-295-00 SHORT 0 (C793: AUS/C793L: FR)
JC129 1-216-295-00 SHORT 0 (C793: AEP, SP/C793L: FR)
JC130 1-216-295-00 SHORT 0 (C793L: UK)
JC135 1-216-296-00 SHORT 0
JC136 1-216-296-00 SHORT 0

JC137 1-216-296-00 SHORT 0
JC138 1-216-296-00 SHORT 0
JC142 1-216-296-00 SHORT 0
JC143 1-216-296-00 SHORT 0
JC144 1-216-296-00 SHORT 0

JC145 1-216-296-00 SHORT 0
JC146 1-216-296-00 SHORT 0
JC147 1-216-295-00 SHORT 0
JC148 1-216-296-00 SHORT 0
JC149 1-216-296-00 SHORT 0

JC150 1-216-296-00 SHORT 0
JC151 1-216-296-00 SHORT 0
JC152 1-216-296-00 SHORT 0
JC153 1-216-296-00 SHORT 0
JC301 1-216-295-00 SHORT 0 (C793: US, CND)

JC302 1-216-295-00 SHORT 0 (-12)

< COIL >

– 22 –

L3 1-406-545-11 COIL, AIR-CORE

MAIN MAIN KEY

Ref. No. Part No. Description Remark

L4 1-406-545-11 COIL, AIR-CORE
L5 1-406-485-11 COIL (OSC)

< LIQUID CRYSTAL DISPLAY >

LCD100 1-803-446-11 DISPLAY PANEL, LIQUID CRYSTAL

< IC LINK >

PS301 1-533-588-11 LINK, IC (C793: AEP, SP, AUS/C793L)

< TRANSISTOR >

Q1 8-729-102-07 TRANSISTOR 2SC2223-F13 (C793L)
Q3 8-729-102-07 TRANSISTOR 2SC2223-F13 (C793L)
Q4 8-729-216-22 TRANSISTOR 2SA1162-G
Q5 8-729-120-28 TRANSISTOR 2SC1623-L5L6 (C793L)
Q50 8-729-120-28 TRANSISTOR 2SC1623-L5L6

Q51 8-729-120-28 TRANSISTOR 2SC1623-L5L6
Q52 8-729-216-22 TRANSISTOR 2SA1162-G (C793L)
Q53 8-729-120-28 TRANSISTOR 2SC1623-L5L6
Q54 8-729-120-28 TRANSISTOR 2SC1623-L5L6
Q57 8-729-840-00 TRANSISTOR 2SD400-E

< RESISTOR >

R1 1-216-133-00 METAL CHIP 3.3M 5% 1/10W

(C793L)

R2 1-216-073-00 RES, CHIP 10K 5% 1/10W

(C793L)
R3 1-216-097-00 RES, CHIP 100K 5% 1/10W
R4 1-216-057-00 METAL CHIP 2.2K 5% 1/10W
R5 1-216-037-00 METAL CHIP 330 5% 1/10W

R6 1-216-049-11 RES, CHIP 1K 5% 1/10W
R7 1-216-081-00 METAL CHIP 22K 5% 1/10W

(C793L)
R8 1-216-097-00 RES, CHIP 100K 5% 1/10W
R9 1-216-121-00 RES, CHIP 1M 5% 1/10W
R10 1-216-073-00 METAL CHIP 10K 5% 1/10W

R11 1-216-017-00 RES, CHIP 47 5% 1/10W
R12 1-216-061-00 METAL CHIP 3.3K 5% 1/10W

(C793: US, CND)

R12 1-216-065-00 RES, CHIP 4.7K 5% 1/10W

(C793: AEP, SP, AUS/C793L)

R13 1-216-057-00 METAL CHIP 2.2K 5% 1/10W

(C793L)
R14 1-216-071-00 METAL CHIP 8.2K 5% 1/10W

R15 1-216-198-00 RES, CHIP 1K 5% 1/8W
R16 1-216-073-00 METAL CHIP 10K 5% 1/10W
R18 1-216-097-00 RES, CHIP 100K 5% 1/10W
R48 1-216-033-00 METAL CHIP 220 5% 1/10W
R49 1-216-049-11 RES, CHIP 1K 5% 1/10W

R50 1-216-073-00 METAL CHIP 10K 5% 1/10W
R51 1-216-097-00 RES, CHIP 100K 5% 1/10W
R52 1-216-073-00 METAL CHIP 10K 5% 1/10W
R54 1-216-073-00 METAL CHIP 10K 5% 1/10W
R56 1-216-166-00 RES, CHIP 47 5% 1/8W

R57 1-216-198-00 RES, CHIP 1K 5% 1/8W
R58 1-216-198-00 RES, CHIP 1K 5% 1/8W
R59 1-216-198-00 RES, CHIP 1K 5% 1/8W
R61 1-216-017-00 RES, CHIP 47 5% 1/10W
R62 1-216-029-00 METAL CHIP 150 5% 1/10W

Ref. No. Part No. Description Remark

R63 1-216-029-00 METAL CHIP 150 5% 1/10W
R64 1-216-029-00 METAL CHIP 150 5% 1/10W
R65 1-216-029-00 METAL CHIP 150 5% 1/10W
R66 1-216-182-00 RES, CHIP 220 5% 1/8W
R67 1-216-182-00 RES, CHIP 220 5% 1/8W

R69 1-216-041-00 METAL CHIP 470 5% 1/10W
R75 1-216-065-00 RES, CHIP 4.7K 5% 1/10W

(C793L)
R133 1-216-065-00 RES, CHIP 4.7K 5% 1/10W
R134 1-216-065-00 RES, CHIP 4.7K 5% 1/10W
R135 1-216-065-00 RES, CHIP 4.7K 5% 1/10W

R136 1-216-065-00 RES, CHIP 4.7K 5% 1/10W
R137 1-216-065-00 RES, CHIP 4.7K 5% 1/10W
R138 1-216-097-00 RES, CHIP 100K 5% 1/10W
R139 1-216-109-00 METAL CHIP 330K 5% 1/10W
R140 1-216-214-00 RES, CHIP 4.7K 5% 1/8W

R141 1-216-214-00 RES, CHIP 4.7K 5% 1/8W
R142 1-216-065-00 RES, CHIP 4.7K 5% 1/10W
R143 1-216-246-00 RES, CHIP 100K 5% 1/8W
R144 1-216-001-00 METAL CHIP 10 5% 1/10W
R145 1-216-081-00 METAL CHIP 22K 5% 1/10W

R146 1-216-073-00 METAL CHIP 10K 5% 1/10W

(-11)
R147 1-216-057-00 METAL CHIP 2.2K 5% 1/10W
R148 1-216-073-00 METAL CHIP 10K 5% 1/10W
R149 1-216-222-95 RES, CHIP 10K 10% 1/8W
R351 1-216-198-00 RES, CHIP 1K 5% 1/8W

< SWITCH >

S50 1-571-478-11 SWITCH, SLIDE (BRIGHTNESS)
S101 1-554-088-00 SWITCH, KEY BOARD (D. S. T./SUMMER T. )

< TRANSFORMER >

T1 1-404-790-11 TRANSFORMER, IF

< VARIABLE CAPACITOR >

TC1 1-141-601-21 CAP, ADJ 10PF
TC2 1-141-605-21 CAP, ADJ 40PF (C793L)
TC3 1-141-601-21 CAP, ADJ 10PF
TC4 1-141-605-21 CAP, ADJ 40PF (C793L)

< VARIABLE RESISTOR >

VR1 1-228-790-00 RES, VAR, CARBON 50K (VOL)

< VIBRATOR >

X50 1-767-517-11 VIBRATOR, CRYSTAL (75kHz)
X100 1-567-098-41 VIBRATOR, CRYSTAL (32.768kHz)
X101 1-760-641-21 VIBRATOR, CERAMIC (4.19MHz)

************************************************************

* 1-671-840-11 MAIN KEY BOARD

***************

< SWITCH >

S207 1-553-856-00 SWITCH, KEYBOARD (1, WAKE UP STATION)
S208 1-553-856-00 SWITCH, KEYBOARD

(ALARM RESET, RADIO OFF)
S209 1-553-856-00 SWITCH, KEYBOARD (BAND)
S210 1-553-856-00 SWITCH, KEYBOARD (5)

– 23 –

ICF-C793/C793L

MAIN KEY TRANSFORMER

Ref. No. Part No. Description Remark

S211 1-553-856-00 SWITCH, KEYBOARD (SLEEP, RADIO ON)

S212 1-553-856-00 SWITCH, KEYBOARD (CLOCK)
S213 1-553-856-00 SWITCH, KEYBOARD (+, TUNE/TIME SET)
S214 1-553-856-00 SWITCH, KEYBOARD (–, TUNE/TIME SET)
S215 1-553-856-00 SWITCH, KEYBOARD (3)
S216 1-553-856-00 SWITCH, KEYBOARD (4)

S217 1-553-856-00 SWITCH, KEYBOARD

(SNOOZE/DATE/SLEEP OFF)

S218 1-553-856-00 SWITCH, KEYBOARD (2)

*************************************************************

* 1-671-842-11 TRANSFORMER BOARD

*******************

* 1-535-771-11 TERMINAL (C793: AEP, AUS/C793L)

< CONNECTOR >

* CN301 1-564-706-11 PIN, CONNECTOR (SMALL TYPE) 4P

< TRANSFORMER >

! T301 1-433-600-11 TRANSFORMER, POWER (C793: US, CND)
! T301 1-433-601-11 TRANSFORMER, POWER

(C793: AEP, SP, AUS/C793L)

************************************************************

Ref. No. Part No. Description Remark

MISCELLANEOUS

**************

! 10 1-555-795-00 CORD, POWER (C793: AEP, SP/C793L: FR)
! 10 1-696-572-21 CORD, POWER (C793L: UK)
! 10 1-783-817-11 CORD, POWER (C793: US, CND)
! 10 1-790-431-11 CORD, POWER (C793: AUS)

L1 1-754-039-11 ANTENNA, FERRITE-ROD (AM) (C793)

L1 1-754-040-11 ANTENNA, FERRITE-ROD (LW/MW) (C793L)
SP301 1-504-748-21 SPEAKER (6.6cm)

************************************************************

ACCESSORIES & PACKING MATERIALS

*******************************

3-865-471-11 MANUAL, INSTRUCTION

(ENGLISH, FRENCH, GERMAN, DUTCH)

3-865-471-21 MANUAL, INSTRUCTION (ENGLISH)

3-865-471-31 MANUAL, INSTRUCTION

(ENGLISH, ITALIAN, SPANISH, PORTUGUESE)

3-865-471-41 MANUAL, INSTRUCTION

(C793: CND, AEP, SP, AUS/C793L)

(C793: US)

(C793: AEP/C793L: FR)

(ENGLISH, SWEDISH, DANISH, FINNISH)

(C793: AEP)

The components identified by
mark ! or dotted line with
mark ! are critical for safety .
Replace only with part num­ber specified.

9-926-955-12

Les composants identifiés par une
marque ! sont critiques pour la
sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.

Sony Corporation

Personal Audio Company

– 24 –

Printed in Japan © 1999. 6

99F0582-1

Published by General Engineering Dept.