SONY XR-CA360 Service Manual

XR-CA360/CA360X
q
CA
SERVICE MANUAL
Ver 1.2 2003.12
Photo: XR-CA360
SPECIFICATIONS
Cassette player section
Tape track 4-track 2-channel stereo Wow and flutter 0.13 % (WRMS) Frequency response 30 – 15,000 Hz Signal-to-noise ratio 55 dB
Tuner section
FM
Tuning range (E model)
Tuning range (Saudi Arabia model) Aerial terminal External aerial connector Intermediate frequency 10.7 MHz/450 kHz Usable sensitivity 9 dBf Selectivity 75 dB at 400 kHz Signal-to-noise ratio 67 dB (stereo),
Harmonic distortion at 1 kHz
Separation 35 dB at 1 kHz
uency response 30 – 15,000 Hz
Fre
FM tuning interval: 50 kHz/200 kHz switchable
87.5 – 108.0 MHz (at 50 kHz step)
87.5 – 107.9 MHz (at 200 kHz step)
87.5 – 108.0 MHz
69 dB (mono)
0.5 % (stereo),
0.3 % (mono)
AM (E model)
Tuning range AM tuning interval:
Aerial terminal External aerial connector Intermediate frequency 10.7 MHz/450 kHz Sensitivity 30 µV
MW/SW (Saudi Arabia model)
Tuning range MW: 531 – 1,602 kHz
Aerial terminal External aerial connector Intermediate frequency 10.7 MHz/450 kHz Sensitivity 30 µV
Power amplifier section
Outputs Speaker outputs
Speaker impedance 4 – 8 ohms Maximum power output 45 W × 4 (at 4 ohms)
XR-CA360/CA360X
Saudi Arabia Model
Model Name Using Similar Mechanism NEW Tape T r ansport Mechanism Type MG-36SZ13-32
General
9 kHz/10 kHz switchable 531 – 1,602 kHz (at 9 kHz step) 530 – 1,710 kHz (at 10 kHz step)
SW1: 2,940 – 7,735 kHz SW2: 9,500 – 18,135 kHz (except for 10,140 – 11,575 kHz)
(sure seal connectors)
Outputs Audio output
Inputs BUS control input terminal
Tone controls Low:
Power requirements 12 V DC car battery Dimensions Approx. 178 × 50 × 178 mm Mounting dimensions Approx. 182 × 53 × 161 mm
Mass Approx. 1.2 kg Supplied accessories Parts for installation and
Design and specifications are subject to change without notice.
Power aerial relay control lead Power amplifier control lead
BUS audio input terminal
Mid:
High:
(negative earth)
(w/h/d)
(w/h/d)
connections (1 set) Front panel case (1)
E Model
±10 dB at 60 Hz (Xplod) ±10 dB at 1 kHz (Xplod) ±10 dB at 10 kHz (Xplod)
E model
FM/AM/CASSETTE CAR STEREO
Saudi Arabia model
FM/MW/SW CASSETTE CAR STEREO
9-874-258-03 Sony Corporation
2003L05-1 e Vehicle Company C 2003.12 Published by Sony Engineering Corporation
XR-CA360/CA360X
d
Ver 1.2

TABLE OF CONTENTS

SERVICING NOTES......................................................... 2
1. GENERAL
Location of Controls ....................................................... 3
Setting the Clock ............................................................. 3
2. DISASSEMBLY
2-1. Disassembly Flow ........................................................... 7
2-2. Sub Panel......................................................................... 7
2-3. Mechanism Deck (MG-36SZ13-32)............................... 8
2-4. MAIN Board ................................................................... 8
2-5. Heat Sink ......................................................................... 9
2-6. Bracket (MD) .................................................................. 9
2-7. DC Motor (Capstan/Reel) (M901) ................................. 10
2-8. Main Belt, Sub Belt (C) .................................................. 10
2-9. Magnetic Head (Playback) (HP901) .............................. 11
3. MECHANICAL ADJUSTMENTS....................... 12
4. ELECTRICAL ADJUSTMENTS
Tape Dec k Section .......................................................... 12
Tuner Section .................................................................. 13
5. DIAGRAMS
5-1. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 14
5-2. Printed Wiring Board – MAIN Board – ........................ 15
5-3. Schematic Diagram – MAIN Board (1/2) – .................. 16
5-4. Schematic Diagram – MAIN Board (2/2) – .................. 17
5-5. Printed Wiring Board – CONTROL Board – ................ 18
5-6. Schematic Diagram – CONTROL Board –................... 19
5-7. IC Pin Function Description ........................................... 21

SERVICING NOTES

SERVICE POSITION
In checking the control board and main board, prepare two jigs (extension (MD) cord J-2502-060-1 and connection cable for F/P to main J-2502-072-1).
main board (CN300)
main board (CN350)
main board (CN600)
mechanism deck
connect jig (extention (MD) cord J-2502-060-1) to the main board (CN300, CN350) and mechanism deck.
connect jig (connection cable for F/P to main J-2502-072-1)
control board (CN900)
to the main board (CN600) an control board (CN900).
6. EXPLODED VIEWS
6-1. General Section ............................................................... 23
6-2. Front Panel Section ......................................................... 24
6-3. MAIN Board Section ...................................................... 25
6-4. Mechanism Deck Section (MG-36SZ13-32) ................. 26
7. ELECTRICAL PARTS LIST ............................... 27
Flexible Circuit Board Repairing
•Keep the temperature of the soldering iron around 270 ˚C dur-
ing repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
Note of replacing of the IC1
In this set, the IC1 on the MAIN board is changed from the mid­way of the production. When the replacing of the IC1, be sure to check the model name printed by IC, and replace the IC1 by following the instructions below.
• When replacing of the IC1 (MN101C49HAS) Replace the IC1 with the MN101C49HEA (Part No.: 6-603­178-01), and replace the TU101 (A-3220-944-A) simultaneously .
• When replacing of the IC1 (MN101C49HEA) Perform the usual replacing.
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.
2
SECTION 1
y
play

GENERAL

XR-CA360/CA360X
This section is extracted from instruction manual.
Location of controls
SOURCE
MODE
RELEASE
SEL
Refer to the pages listed for details.
1 SOURCE (Radio/CD/MD) button 2 MODE button
During radio reception:
Band select
During CD/MD playback:
CD/MD unit select
3 Volume +/– button 4 Z (eject) button 5 Display window 6 m/M (fast winding)/DIR (tape
transport direction change) buttons
7 SEEK button
Seek Automatic Music Sensor Manual search
8 DSPL (display mode change) button 9 EQ3 button 0 RELEASE (front panel release) button qa SEL (select) button qs RESET button (located on the front side
of the unit behind the front panel)
qd ATT (attenuate) button
DISC
ATT
123456
DIR
SEEK
REP
SHUF
ATA
BTM
XR-CA360X/CA360
qf Number buttons
During radio reception:
Preset number select
During CD/MD playback:
(1) DISC – (2) DISC + (3) REP (4) SHUF
qg Frequency select switch (E model)
(located on the bottom of the unit)
See “Frequency select switch” in the Installation/Connections manual.
qh BTM/ATA button qj SENS button qk OFF button*
* Warning when installing in a car
without ACC (accessory) position on the ignition key switch
Be sure to press (OFF) on the unit for 2 seconds to turn off the clock display after turning off the engine.
When you press (OFF) momentarily, the clock display does not turn off and this causes batter
wear.
EQ3
DSPL
Setting the clock
The clock uses a 12-hour digital indication.
Example: To set the clock to 10:08
1
Press (DSPL) for 2 seconds.
The hour indication flashes.
1 Press either side of the volume button
OFFSENS
to set the hour.
to go forward
to go back
2 Press (SEL).
The minute indication flashes.
3 Press either side of the volume button
to set the minute.
to go forward
to go back
2
Press (DSPL).
The clock starts.
After the clock setting is complete, the
returns to normal play mode.
dis
3
XR-CA360/CA360X
2
A
B
*not supplied
no suministrado
BUS AUDIO IN
BUS CONTROL IN
Source selector* Selector de fuente*
XA-CA30
BUS AUDIO IN
BUS CONTROL IN
Cautions
•This unit is designed for negative earth 12 V DC operation only.
•Do not get the wires under a screw, or caught in moving parts (e.g. seat railing).
•Before making connections, turn the car ignition off to avoid short circuits.
•Connect the yellow and red power input leads only after all other leads have been connected.
Run all earth wires to a common earth point.
•Be sure to insulate any loose unconnected wires with electrical tape for safety.
Notes on the power supply cord (yellow)
•When connecting this unit in combination with other stereo components, the connected car circuit’s rating must be higher than the sum of each component’s fuse.
•When no car circuits are rated high enough, connect the unit directly to the battery.
Parts Iist (1)
•The numbers in the list are keyed to those in the instructions.
•The bracket 1 and the protection collar 5 are attached to the unit before shipping. Before mounting the unit, use the release keys 7 to remove the bracket 1 and the protection collar 5 from the unit. For details, see “Removing the protection collar and the bracket (4)” on the reverse side of the sheet.
Keep the release keys 7 for future use as they
are also necessary if you remove the unit from your car.
Caution
Handle the bracket 1 carefully to avoid injuring your fingers.
AUDIO OUT
REAR
Connection example (2)
Notes (2-B- )
• Be sure to connect the earth cord before connecting the amplifier.
•If you connect an optional power amplifier and do not use the built-in amplifier, the beep sound will be deactivated.
Tip (2-B-
For connecting two or more CD/MD changers, the source selector XA-C30 (optional) is necessary.
)
Connection diagram (3)
1 To a metal surface of the car
First connect the black earth lead, then connect the yellow and red power input leads.
2 To the power aerial control lead or power supply
lead of aerial booster amplifier
Notes
•It is not necessary to connect this lead if there is no power aerial or aerial booster, or with a manually­operated telescopic aerial.
•When your car has a built-in FM/AM aerial in the rear/side glass, see “Notes on the control and power supply leads.”
3 To AMP REMOTE IN of an optional power amplifier
This connection is only for amplifiers. Connecting any other system may damage the unit.
4 To the +12 V power terminal which is energised in
the accessory position of the ignition key switch
Notes
•If there is no accessory position, connect to the +12 V power (battery) terminal which is energised at all times. Be sure to connect the black ground lead to a metal surface of the car first.
•When your car has a built-in FM/AM aerial in the rear/side glass, see “Notes on the control and power supply leads.”
5 To the +12 V power terminal which is energised at
all times
Be sure to connect the black ground lead to a metal surface of the car first.
Notes on the control and power supply leads
• The power aerial control lead (blue) supplies +12 V DC when you turn on the tuner.
•When your car has built-in FM/AM aerial in the rear/ side glass, connect the power aerial control lead (blue) or the accessory power input lead (red) to the power terminal of the existing aerial booster. For details, consult your dealer.
•A power aerial without relay box cannot be used with this unit.
Memory hold connection
When the yellow power input lead is connected, power will always be supplied to the memory circuit even when the ignition key is turned off.
Notes on speaker connection
• Before connecting the speakers, turn the unit off.
• Use speakers with an impedance of 4 to 8 ohms, and with adequate power handling capacities to avoid its damage.
• Do not connect the speaker terminals to the car chassis, or connect the terminals of the right speakers with those of the left speaker.
• Do not connect the earth lead of this unit to the negative (–) terminal of the speaker.
• Do not attempt to connect the speakers in parallel.
• Connect only passive speakers. Connecting active speakers (with built-in amplifiers) to the speaker terminals may damage the unit.
• To avoid a malfunction, do not use the built-in speaker wires installed in your car if the unit shares a common negative (–) lead for the right and left speakers.
• Do not connect the unit’s speaker cords to each other.
1
Note
Before installing, make sure that the catches on both sides of the bracket 1 are bent inwards 2 mm. If the catches are straight or bent outwards, the unit will not be installed securely and may spring out.
Catch
4
XR-CA360/CA360X
3
Supplied with the CD/MD changer Suministrado con el cambiador de CD/MD
RCA pin cord (not supplied) Cable con clavijas RCA (no suministrado)
AMP REM
3
Max. supply current 0.3 A Corriente máx. de alimentación de 0,3 A
Left Izquierdo
Right Derecho
Left Izquierdo
Right Derecho
Source selector (not supplied ) Selector de fuente (no suministrado )
XA-C30
BUS AUDIO IN
from car aerial de antena de automóvil
Supplied with XA-C30 Suministrado con el XA-C30
BUS
AUDIO
AUDIO IN
OUT
AUDIO
OUT REAR
Blue/white striped Con raya azul/blanca
White Blanco
White/black striped Con raya blanca/negra
Grey Gris
Grey/black striped Con raya gris/negra
Green Verde
Green/black striped Con raya verde/negra
Purple Púrpura
Purple/black striped Con raya violeta/negra
Fuse (10 A) Fusible (10 A)
BUS
CONTROL IN
6
Black Negro
Blue Azul
Corriente máx. de alimentación de 0,1 A
Red Rojo
Yellow Amarillo
Max. supply current 0.1 A
Equipment used in illustrations (not supplied) Equipo utilizado en las ilustraciones (no suministrado)
Front speaker Altavoces delanteros
Rear speaker Altavoces traseros
Power amplifier Amplificador de potencia
CD/MD Cambiador de CD/MD
1
ANT REM
2
4
5
Precautions
•Choose the installation location carefully so that the unit will not interfere with normal driving operations.
•Avoid installing the unit in areas subject to dust, dirt, excessive vibration, or high temperatures, such as in direct sunlight or near heater ducts.
•Use only the supplied mounting hardware for a safe and secure installation.
Mounting angle adjustment
Adjust the mounting angle to less than 20°.
Removing the protection collar and the bracket (4)
Before installing the unit, remove the protection collar 5 and the bracket 1 from the unit.
1
Remove the protection collar 5.
1 Engage the release keys 7 together with the protection collar
5 .
2 Pull out the release keys 7 to remove the protection collar 5.
2
Remove the bracket 1.
1 Insert both release keys 7 together between the unit and the
bracket until they click.
2 Pull down the bracket 1, then pull up the unit to separate.
Frequency select switch (E model)
The AM (FM) tuning interval is factory-set to the 9 k (50 k) position. If the frequency allocation system of your country is based on 10 kHz (200 kHz) interval, set the switch on the bottom of the unit to the 10 k (200 k) position before making connections.
Mounting example (5)
Installation in the dashboard
Notes
• Bend these claws outward for a tight fit, if necessary (5-2).
•Make sure that the 4 catches on the protection collar 5 are properly engaged in the slots of the unit (5-3).
Mounting the unit in a Japanese car (6)
You may not be able to install this unit in some makes of Japanese cars. In such a case, consult your Sony dealer.
Note
To prevent malfunction, install only with the supplied screws 4.
How to detach and attach the front panel (7)
Before installing the unit, detach the front panel.
7-A To detach
Before detaching the front panel, be sure to press (OFF). Press (RELEASE), then slide the front panel to the left, and pull it off towards you.
7-B To attach
Attach part A of the front panel to part B of the unit as illustrated and push the left side into position until it clicks.
Warning when installing in a car without ACC (accessory) position on the ignition key switch
Be sure to press (OFF) on the unit for two seconds to turn off the clock display after turning off the engine.
When you press (OFF) only momentarily, the clock display does not turn off and this causes battery wear.
RESET button
When the installation and connections are completed, be sure to press the RESET button with a ballpoint pen, etc., after detaching the front panel.
5
XR-CA360/CA360X
4
5
1
1
2
7
5
Orient the release key correctly. Oriente la llave de liberación en la dirección correcta.
c
2
182 mm
53 mm
Claws
1
Uñas
7
c
1
Face the hook inwards. El gancho debe encontrarse en la parte interior.
3
5
Dashboard Salpicadero
1
c
Fire wall Panel cortafuegos
2
3
6
A
B
TOYOTA NISSAN
4
max. size 5 × 8 mm Tamaño máx. 5 × 8mm
Bracket Soporte
Existing parts supplied with your car Piezas existentes suministradas con su automóvil
AB
7
to dashboard/centre console al salpicadero/consola central
Bracket Soporte
(OFF)
4
max. size 5 × 8 mm Tamaño máx. 5 × 8mm
4
max. size 5 × 8 mm Tamaño máx. 5 × 8mm
Bracket Soporte
Existing parts supplied with your car Piezas existentes suministradas con su automóvil
to dashboard/centre console al salpicadero/consola central
Bracket Soporte
4
max. size 5 × 8 mm Tamaño máx. 5 × 8mm
A
B
(RELEASE)
6
SECTION 2

DISASSEMBLY

• This set can be disassembled in the order shown below.

2-1. DISASSEMBLY FLOW

Note 1: The process described in can be performed in any order. Note 2: Without completing the process described in , the next process can not be performed. Note 3: Illustration of disassembly is omitted.
SET
XR-CA360/CA360X
FRONT PANEL SECTION
(Note 3)
2-2. SUB PANEL
(Page 7)
2-3. MECHANISM DECK (MG-36SZ13-32)
(Page 8)
2-4. MAIN BOARD
(Page 8)
2-5. HEAT SINK
(Page 9)
Note: Follow the disassembly procedure in the numerical order given.
COVER (Note 3)
2-6. BRACKET (MD)
(Page 9)
2-7. DC MOTOR
(CAPSTAN/REEL) (M901) (Page 10)
2-2. SUB PANEL
2-8. MAIN BELT,
SUB BELT (C) (Page 10)
2-9. MAGNETIC HEAD (PLAYBACK) (HP901)
(Page 11)
1
2
sub panel
two claws
1
claw
1
two claws
7
XR-CA360/CA360X
2-3. MECHANISM DECK (MG-36SZ13-32)
2
two screws
1
connector (CN350)
(PTT2.6
×
6)
2
two screws (PTT2.6
×
6)
3

mechanism deck (MG-36SZ13-32)

1
connector (CN300)
2-4. MAIN BOARD
2
two ground point screws (PTT2.6
×
6)
4

main board

3
3
screw (PTT2.6
two screws (PTT2.6
×
6)
×
6)
1
claw
8
2-5. HEAT SINK
)
2

heat sink

1
two screws (PTT2.6 × 10)
XR-CA360/CA360X
1
five screws (PTT2.6 × 10
2-6. BRACKET (MD)
1
claw
3

bracket (MD)

1
claw
2
four screws (B2.6
1
claw
×
4)
9
XR-CA360/CA360X
2-7. DC MOTOR (CAPSTAN/REEL) (M901)
2
main belt
3
sub belt (C)
1
two screws (P2 × 2.5)
4

DC motor (capstan/reel) (M901)

2-8. MAIN BELT, SUB BELT (C)

1
main belt
2
screw (PTP2
Note :When installing motor,
adjust the screw and screw hole of motor.
×
3)
4
sub belt (c)
10
2
screw (PTP2 × 3)
2
screw (PTP2 × 3)
A
2
screw (PTP2 × 3)
3
Lift up the bottom BKT (TS) in the direction of arrow (as far as the belt can be removed).
A
2-9. MAGNETIC HEAD (PLAYBACK) (HP901)
9
screw (P2
×
4)
5
screw (PTP2
×
3)
qd
Remove three magnetic head lead wires from the adjuster arm blue.
magnetic head (HP901)
magnetic head lead wire
adjuster arm blue
•MAGNETIC HEAD LEAD WIRE COLOR INDICATION ON HEAD (HP901) AND SLIDE SW BOARD.
0
SPG support plate
7
PSW (reel) B
8
HP roller (A)
qa
adjuster arm SPG (A)
qs
adjuster arm SPG (B)
qf

magnetic head (play back) (HP901)

6
slide SW board
4
Remove the three solders of magnetic head lead wires.
yellow lead wire
black lead wire
red lead wire
slide SW board
2
screw (PTT2 × 4)
3
FF/REV lever section
XR-CA360/CA360X
1
screw (P2 × 3)
11
XR-CA360/CA360X
e
SECTION 3

MECHANICAL ADJUSTMENTS

SECTION 4

ELECTRICAL ADJUSTMENTS

1. Clean the following parts with a denatured-alcohol-moistened swab:
playback head pinch roller rubber belt capstan idler
2. Demagnetize the playback head with a head demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. The adjustments should be performed with the power supply voltage (14.4 V) unless otherwise noted.
Note: With this set, it is not necessary to apply suitable locking
compound to the parts after the azimuth adjustment.
• TORQUE MEASUREMENT
Mode Torque Meter Meter Reading
Forward CQ-102C (25 – 55 g•cm)
Forward Back Tension
Reverse CQ-102RC (25 – 55 g•cm)
Reverse Back Tension
FF, REW CQ-201B (50 – 150 g•cm)
CQ-102C (1.5 – 4 g•cm)
CQ-102RC (1.5 – 4 g•cm)
2.46 – 5.39 mN•m
(0.35 – 0.76 oz•inch)
0.15 – 0.39 mN•m
(0.02 – 0.06 oz•inch)
2.46 – 5.39 mN•m
(0.35 – 0.76 oz•inch)
0.15– 0.39 mN•m
(0.02 – 0.06 oz•inch)
4.91 – 14.70 mN•m
(0.69 – 2.08 oz•inch)
• TAPE TENSION MEASUREMENT
Mode Tension Meter Meter Reading
Forward CQ-403A Reverse CQ-403R
more than 5.89 mN•m
(more than 60 g)
(more than 2.12 oz)

TAPE DECK SECTION 0 dB= 0.775 V

1. The adjustments should be performed in the order given in this service manual.
2. The adjustments should be performed for both L-CH and R-CH.
TEST TAPE
Type Signal Used for
P-4-A063 6.3 kHz, –10 dB head azimuth adjustment WS-48A 3 kHz, 0 dB tape speed adjustment
PB HEAD AZIMUTH ADJUSTMENT
Procedure:
1. Put the set into the FWD PB mode.
test tape P-4-A063 (6.3 kHz, –10 dB)
set
4
speaker out terminal
2. Turn the screw and check the output peak value. Adjust the screw so that the peak value in channels L and R coincides within 3 dB.
output level
within 3 dB
L-CH peak
L-CH peak
screw position
R-CH peak
level
meter
+ –
R-CH peak
within 3 dB
angl
3. Check the phase in the FWD PB mode.
test tape P-4-A063 (6.3 kHz, –10 dB)
L-CH
set
R-CH
in phase
4
4
speaker out terminal
Screen pattern
45 °
90 °
good wrong
oscilloscope
V
+ –
135 ° 180 °
H
+
4. Repeat the above adjustment for the REV PB mode.
5. Check that output level difference between FWD PB mode and REV PB mode is within 4 dB.
Adjustment Location: PB head (See page 13)
12
r
TAPE SPEED ADJUSTMENT
Setting:
test tape WS-48A (3 kHz, 0 dB)
set
frequency counte
4
+ –
speaker out terminal
Procedure:
1. Put the set into the FWD PB mode.
2. Adjust adjustment resistor for inside capstan motor so that the reading on the frequency counter becomes in 3,015 Hz.
Specified Value: 2,940 to 3,090 Hz
Adjustment Location: DC motor
XR-CA360/CA360X

TUNER SECTION

Tuner section adjustments are done automatically in this set.
Adjustment Location: PB head
– Set Upper View –
FWD
 
adjustment
screws
REV
Adjustment Location: DC motor
– Set Upper View –
Tape Speed Adjustment
13
XR-CA360/CA360X
Ver 1.2
SECTION 5

DIAGRAMS

5-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board:
X : parts extracted from the component side.
Y : parts extracted from the conductor side.
z
: Pattern from the side which enables seeing.
• (The other layers' patterns are not indicated.)
Caution: Pattern face side: Parts on the pattern face side seen from (Conductor Side) the pattern face are indicated. Parts face side: Parts on the parts face side seen from (Component Side) the parts face are indicated.
•Abbreviation
• When replacing the IC1, refer to servicing note (Page 2 “When
: Through hole.
: Carbon pattern.
EA : Saudi Arabia model replacing the IC1”).
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 and 1/ specified.
C : panel designation.
A : B+ Line.
•Power voltage is dc 14.4V and fed with regulated dc power supply from ACC and BATT cords.
•Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM 〈〈 〉〉 : TAPE PLAYBACK
•Voltages are taken with a VOM (Input impedance 10 M). 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 E : T APE PLAYBACK L : BUS AUDIO IN
•Abbreviation EA : Saudi Arabia model
• When replacing the IC1, refer to ser vicing note (Page 2 “When replacing the IC1”).
4
W or less unless otherwise
14
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