Sony MDX-C670, Service Manual

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TABLE OF CONTENTS
1. SERVICE NOTE
......................................................... 2
2. GENERAL
..................................................................... 3
3. DISASSEMBLY
............................................................ 7
4. ELECTRICAL ADJUSTMENTS
........................... 12
5. DIAGRAMS
5-1. Printed Wiring Boards –MD Section– .............................. 15
5-2. Schematic Diagram –MD Section– .................................. 17
5-3. Schematic Diagram –MAIN Section– .............................. 22
5-4. Printed Wiring Board –MAIN Section– ........................... 27
5-5. Printed Wiring Board –DISPLAY Section– ..................... 31
5-6. Schematic Diagram –DISPLAY Section– ........................ 33
6. EXPLODED VIEWS
.................................................. 35
7. ELECTRICAL PARTS LIST
.................................. 39
General
Output Line out (2)
Power antenna relay control lead
Power amplisier control lead
Telephone mute control lead (MDX-C670)
Illumination control lead
Tone controls Bass ± 10 dB at 100 Hz
Treble ± 10 dB at 10 kHz
Power requirements 12 V DC car battery (negative ground)
Dimensions Approx. 188
×
58
×
174 mm (w/h/d)
Mounting dimensions Approx. 178
×
50
×
162 mm (w/h/d)
Mass Approx. 1.1 kg
Supplied accessories Rotary remote (1)
Parts for installation and connections (1 set)
Front panel case (1)
U.S. and foreign patents liscensed from Dolby laboratories Licensing Cor-
poration.
Design and specifications are subject to change without notice.
CAUTION
Use of controls or adjustments or performance of pro-
cedures other than those specified herein may result in
hazardous radiation exposure.
Flexible Circuit Board Repairing
•
Keep the temperature of the soldering iron around 270 ˚C
during 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 solder-
ing or unsoldering.
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.
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 MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE !
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS
LES SUPPLÉMENTS PUBLIÉS PAR SONY.
SECTION 1
SERVICE NOTE
•
Note on replacing the MAIN board (German model)
As the repair parts of MAIN board with mounted parts destined for
German model, the MAIN board with mounted parts for AEP model
is supplied.
Accordingly, when replacing the board, exchange two following
parts.
R61 12k
n
4.7k (1-216-065-00)
R71 12k n 4.7k (1-216-065-00)
[MAIN BOARD] (Conductor Side)
R71
R61
IC751