XR-C7500R, XR-C7500RX - Sony Car Audio Service Manual (repair manual)

AEP Model

UK Model

XR-C7500R/C7500RX

E Model

XR-C7500RX

Model Name Using Similar Mechanism XR-C7300/C5300R

Tape Transport Mechanism Type

MG-25G-136

Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol 

;

 are trade-

marks of Dolby Laboratories Licensing Corporation.

Photo: XR-C7500R

Outputs

Audio output
Power aerial relay control
lead
Power amplifier control
lead
Telephone ATT control
lead

Power requirements

12 V DC car battery
(negative earth)

Dimensions

Approx. 178 

×

 50 

×

 183 mm

(w/h/d)

Mounting dimensions

Approx. 182 

×

 53 

×

 162 mm

(w/h/d)

Mass

Approx. 1.2 kg

Supplied accessories

Parts for installation and
connections (1 set)
Front panel case (1)
Rotary commander
RM-X4S (XR-C7500R/
XR-C7500RX: AEP, UK)
Card remote commander
RM-X91 (XR-C7500RX: E)

Tape track

4-track 2-channel stereo

Wow and flutter

0.08 % (WRMS)

Frequency response

30 – 18,000 Hz

Signal-to-noise ratio

Tuning range

87.5 – 108.0 MHz

Aerial terminal

External aerial connector

Intermediate frequency

10.7 MHz/450 kHz

Usable sensitivity

8 dBf

Selectivity

75 dB at 400 kHz

Signal-to-noise ratio

66 dB (stereo),
72 dB (mono)

Harmonic distortion at 1 kHz

0.6 % (stereo),
0.3 % (mono)

Separation

35 dB at 1 kHz

Frequency response

30 – 15,000 Hz

Tuning range

MW: 531 – 1,602 kHz
LW: 153 – 279 kHz

Aerial terminal

External aerial connector

Intermediate frequency

10.7 MHz/450 kHz

Sensitivity

MW: 30 

µ

V

LW:  40 

µ

V

Outputs

Speaker outputs
(sure seal connectors)

Speaker impedance

4 – 8 ohms

Maximum power output 50 W 

×

 4 (at 4 ohms)

TYPE II, IV

TYPE I

61 dB

58 dB

67 dB

64 dB

(XR-C7500R/C7500RX: AEP, UK)
For RM-X4S (Remote Commander),
please refer to RM-X4S Service Manual
(9-925-698-

S

) previously issued.

2001E0500-1

C

 2001.5

2

...............................................

2

Location of Controls .......................................................

3

Setting the Clock .............................................................

3

Installation .......................................................................

4

Connections .....................................................................

6

......................................................... 10

........... 12

....................... 15

Test Mode ........................................................................ 15
Tape Deck Section .......................................................... 16
Tuner Section .................................................................. 16

7-1. Block Diagram – TUNER/TAPE Section – ................... 17
7-2. Block Diagram – MAIN Section – ................................. 18
7-3. Block Diagram

– DISPLAY/KEY CONTROL Section – ........................ 19

7-4. Block Diagram

– BUS CONTROL/POWER SUPPLY Section – ........... 20

7-5. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 21

7-6. Printed Wiring Board

– Main Board (Component Side) – ................................ 22

7-7. Printed Wiring Board

– Main Board (Conductor Side) – .................................. 23

7-8. Schematic Diagram – Main Board (1/4) – ..................... 24
7-9. Schematic Diagram – Main Board (2/4) – ..................... 25
7-10. Schematic Diagram – Main Board (3/4) – ..................... 26
7-11. Schematic Diagram – Main Board (4/4) – ..................... 27
7-12. Printed Wiring Board  – SUB Board – ........................... 28
7-13. Schematic Diagram – SUB Board – ............................... 28
7-14. Printed Wiring Board  – KEY Board – ........................... 30
7-15. Schematic Diagram – KEY Board – .............................. 31
7-16. IC Pin Function Description ........................................... 34

................................................ 40

............................... 43

• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

• 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.

The XR-C7500R and XR-C7500RX have three types of MAIN
boards respectively.

TYPE A TYPE B TYPE C

R606

×

a

a

R607

a

×

a

3

This section is extracted from
instruction manual.

1 MENU button

2 Volume control dial
3 SOURCE (TUNER/TAPE/CD/MD) button

4 PRST/DISC +/– (cursor up/down) buttons

5 DSPL/PTY (display mode change/

6 LIST button

7 Display window
8 Z (eject) button (located on the front side

9 OPEN button  7, 10, 36
q; DSO button  26
qa SOUND button  24, 25, 26
qs OFF button*  6, 7, 8, 10
qd Reset button (located on the front side

qf SEEK/AMS –/+ (cursor left/right) buttons

XR-C7500RX/XR-C7500R

D I SC

+

PR

S

T

+

D IS C

–

PR

ST

-

SOURCE

DSPL

LIST

AF

OFF

PTY

ENTER

MENU

SOUND

1

2

3

4

5

6

-SEEK/AMS

REP

SHUF

TA

OPEN

MODE

DSO

qg ENTER button

qh MODE button  10, 11, 12, 13, 19, 20, 31,

qj Receptor for the card remote

qk Number buttons

(1) REP  11

(1) REP  32
(2) SHUF  32

ql AF button  15, 17
w; TA button  16, 17

* 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.

Refer to the pages listed for details.

  Press (ENTER).

The clock starts.

After the clock setting is complete, the
display returns to normal playback mode.

The clock uses a 24-hour digital indication.

Example: To set the clock to 10:08

Press (MENU), then press either side of
(PRST/DISC) repeatedly until “Clock”
appears.

1

 Press (ENTER).

The hour indication flashes.

2

 Press either side of (PRST/DISC) to set

3

 Press (+) side of (SEEK/AMS).

The minute indication flashes.

4

 Press either side of (PRST/DISC) to set

A unit turned off by pressing (OFF) for two seconds cannot be operated with the card remote
commander unless (SOURCE) on the unit is pressed or a casette is inserted to activate the unit first.

1 OFF button

2 MENU button

3 SOURCE button

4 SEEK/AMS (cursor </,) buttons

5 SOUND button

6 DSPL/PTY button

7 ATT button

8 LIST button

9 DISC/PRST (cursor M/m) buttons

q; ENTER button

qa MODE button

qs VOL buttons

4

15 

cm

•If you mount other Sony equipment with this

unit, it is better to mount this unit in the lower
position.

•There must be a distance of at least 15 cm

between the cassettes slot of the unit and shift
lever to insert cassette easily.  Choose the
installation location carefully so the unit does
not interfere with gear shifting and other driving
operations.

•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.

Adjust the mounting angle to less than 20

°

.

•Si monta otro equipo Sony con esta unidad, es

preferible montar esta unidad en la posición más
baja.

•Para que sea posible insertar la cinta con

facilidad, debe haber una distancia de al menos
15 cm entre la ranura de inserción de cintas de la
unidad y la palanca de cambios.
Instale la unidad en un lugar que no entorpezca
las operaciones de cambio de marchas o de
conducción en general.

•Elija cuidadosamente el lugar de montaje de

forma que la unidad no dificulte las funciones
normales de conducción.

•Evite instalar la unidad donde pueda quedar

sometida a altas temperaturas, como a la luz
solar directa o al aire de calefacción, o a polvo,
suciedad o vibraciones excesivas.

•Para realizar una instalación segura y firme,

utilice solamente la ferretería de montaje
suministrada.

Ajuste el ángulo de montaje a menos de 20

°

.

•Om du monterar annan Sony-utrustning till

denna enhet är det bäst att montera denna enhet
i det undre läget.

•För att du ska kunna sätta i och ta ut bandet

måste avståndet vara minst 15 cm mellan
kassettfacket på enheten och växelspaken. När
du installerar enheten väljer du en plats så att
enheten inte är i vägen när du kör.

•Var noga när du väljer var i bilen du monterar

bilstereon, så att den inte sitter i vägen när du
kör.

•Montera inte bilstereon där den utsätts för

värme, t ex solsken eller varmluft, eller där den
utsätts för damm, smuts och/eller vibrationer.

•Använd endast de medföljande

monteringstillbehören för att vara säker på att
bilstereon monteras på ett säkert och korrekt
sätt.

Monteringsvinkeln får inte vara större än 20 grader.

•É preferível montar este aparelho na posição

mais baixa, se quiser montar simultaneamente
outros equipamentos da Sony.

•Para colocar com facilidade a cassete, deve haver

uma distância de pelo menos 15 cm entre a
ranhura de introduçäo da cassete e a alavanca
das mudanças.
Escolha o local de instalaçäo de forma a que o
aparelho näo interfira com as mudanças de
velocidade ou com as outras manobras de
conduçäo.

•Escolha com cuidado um local apropriado para

a montagem do aparelho, para que este não
interfira com as manobras necessárias à
condução do veículo.

•Evite instalar o aparelho onde possa estar sujeito

a altas temperaturas, como em locais expostos
directamente à luz do sol, ao ar quente dos
aquecimentos, ou sujeitos a pó, sujidade ou
vibração excessiva.

•Para efectuar uma instalação segura utilize

unicamente o hardware de montagem fornecido.

Ajuste o ângulo de montagem a menos de 20

°

.

A

A To detach

Before detaching the front panel, be sure to press
(OFF). Press (OPEN), then slide the front panel to
the right side, and pull out the left side.

BTo attach

Place the hole A in the front panel onto the spindle
B

 on the unit as illustrated, then push the left side in.

A Para extraerlo

Antes de extraer el panel frontal, ceriórese de pulsar
(OFF). Después pulse (OPEN) para abrirlo, deslícelo
hacia la derecha, por último, tire de su parte
izquierda.

B Para instalarlo

Coloque el orificio A del panel frontal en el eje B
de la unidad, como se muestra en la ilustración, y
después presione la parte izquierda.

A Ta loss frontpanelen

Var noga med att trycka på (OFF) innan
frontpanelen tas loss. Tryck därefter på (OPEN) för
att öppna frontpanelen. Skjut frontpanelen åt höger
och dra dess vänstra del utåt för att ta loss
frontpanelen.

B Fästa frontpanelen

Placera frontpanelen så att hålet A på frontpanelen
träs över axeln B på bilstereon enligt illustrationen.
Tryck därefter frontpanelens vänstra del inåt.

A Para retirar

Antes de retirar o painel frontal, tem de carregar
primeiro em (OFF). A seguir, carregue em (OPEN)
para soltar o painel frontal e empurre-o para a
direita. Depois puxe o lado esquerdo do painel para
fora.

B Para colocar

Coloque o orificio A do painel frontal no eixo B do
aparelho tal como ilustrado, e depois carregue no
lado esquerdo para dentro.

B

c