Sony CDX-C880 - Fm/am Compact Disc Player User manual

– 1 –
Model Name Using Similar Mechanism CDX-C680/C780
CD Drive Mechanism Type MG-363S-121
Optical Pick-up Name KSS-521A
SERVICE MANUAL
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS (US model)
POWER OUTPUTAND TOTAL HARMONIC DISTORTION
19 watts per channel minimum continuous average power into
4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more than
1 % total harmonic distortion.
Other specifications
CD player section
System Compact disc digital audio
system
Signal-to-noise ratio 100 dB
Frequency response 10 - 20,000 Hz
Wow and flutter Below measurable limit
Laser Diode Properties
Material GaAlAs
Wavelength 780 nm
Emission Duration Continuous
Laser output power Less than 44.6 µW*
*This output is the value measured at a distance of
200 mm from the objective lens surface on the Optical
Pick-up Block.
Tuner section
FM
Tuning range US model:
87.5 - 107.9 MHz
E model:
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)
Antenna terminal External antenna connector
Intermediate frequency 10.7 MHz
Usable sensitivity 8 dBf
Selectivity 75 dB at 400 kHz
50 dB at 200 kHz
Signal-to-noise ratio 65 dB (stereo),
68 dB (mono)
Harmonic distortion at 1 kHz
0.7% (stereo),
0.4% (mono)
Separation 35 dB at 1 kHz
Frequency response 30 - 15,000 Hz
AM
Tuning range US model:
530 - 1,710 kHz
E model:
AM tuning interval:
9 kHz/10 kHz switchable
531 - 1,602 kHz
(at 9 kHz step)
530 - 1,710 kHz
(at 10 kHz step)
Antenna terminal External antenna connector
Intermediate frequency 10.71 MHz/450 kHz
Sensitivity 30 µV
Power amplifier section
Outputs Speaker outputs
(sure seal connectors)
Speaker impedance 4 - 8 ohms
Maximum power output 45 W ×4 (at 4 ohms)
– Continued on next page –
CDX-C880
US Model
E Model
FM/AM COMPACT DISC PLAYER
MICROFILM

– 2 –
General
Outputs EQ output
Line outputs (3)
Power antenna relay
control lead
Power amplifier control
lead
TelephoneATT control
lead
Illumination control lead
Tone controls Bass ±8 dB at 100 Hz
Treble ±8 dB at 10 kHz
Power requirements 12 V DC car battery
(negative ground)
Dimensions Approx. 178 ×50 ×182 mm
(7 1/8 ×2 ×7 1/4 in.)
(w/h/d)
Mounting dimension Approx. 182 ×53 ×163 mm
(7 1/4 ×2 1/8 ×6 1/2 in.)
(w/h/d)
Mass Approx. 1.4 kg (3 lb. 1 oz.)
Supplied accessories Rotary commander RM-X4S (1)
Parts for installation and
connections (1 set)
Front panel case (1)
Design and specifications are subject to change without
notice.
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.
SERVICE NOTE
CAUTION
Use of controls or adjustments or performance of proce-
dures other than those specified herein may result in haz-
ardous radiation exposure.
Notes on Chip Component Replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
breakdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown and also use
the procedure in the printed matter which is included in the repair
parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission, ob-
serve from more than 30 cm away from the objective lens.
NOTES ON PICK-UP FLEXIBLE BOARD
The pick-up flexible board in this set is secured to the optical pick-
up with an adhesive tape. Once the tape is removed, an adhering
force becomes weak, and it cannot be reused.
Therefore, if the optical pick-up is replaced, replace also the pick-
up flexible board with a new one.

– 3 –
TABLE OF CONTENTS
1. GENERAL
Location of Controls................................................................ 4
Getting Started......................................................................... 5
Setting the Clock ..................................................................... 5
CD Player ................................................................................ 6
Radio ....................................................................................... 8
Other Functions ..................................................................... 10
CD/MD Unit.......................................................................... 11
DSP........................................................................................ 15
TV/Video ............................................................................... 17
Connections ........................................................................... 19
2. DISASSEMBLY
2-1. Cover ................................................................................. 21
2-2. Front Panel Assy ............................................................... 21
2-3. Sub Panel Assy .................................................................. 22
2-4. Mechanism Block ............................................................. 22
2-5. Main Board ....................................................................... 23
2-6. Heat Sink ........................................................................... 23
2-7. Chassis (T) Sub Assy ........................................................ 24
2-8. Lever Assy......................................................................... 24
2-9. Servo Board....................................................................... 25
2-10. Roller Assy ........................................................................ 25
2-11. Chassis (OP) (O/S) Assy ................................................... 26
2-12. Optical Pick-up Block .......................................................26
3. ELECTRICAL ADJUSTMENTS
CD Section ............................................................................ 27
Tuner Section......................................................................... 27
4. DIAGRAMS
4-1. IC Pin Descriptions ........................................................... 30
4-2. Circuit Boards Location .................................................... 38
4-3. Block Diagram –CD Section–........................................... 39
4-4. Block Diagram –Main Section–........................................ 41
4-5. Block Diagram –Display Section–.................................... 43
4-6. Printed Wiring Boards –CD Mechanism Section–............ 45
4-7. Schematic Diagram –CD Mechanism Section– ................ 49
4-8. Schematic Diagram –Main Section–................................. 54
4-9. Printed Wiring Boards –Main Section– ............................ 59
4-10. Printed Wiring Boards –Display Section– ........................ 63
4-11. Schematic Diagram –Display Section–............................. 67
4-12. Printed Wiring Board –CSV Section–............................... 70
4-13. Schematic Diagram –CSV Section– ................................. 73
5. EXPLODED VIEWS
5-1. Chassis Section ................................................................. 80
5-2. Front Panel Section ........................................................... 81
5-3. CD Mechanism Section (1) ............................................... 82
5-4. CD Mechanism Section (2) ............................................... 83
5-5. CD Mechanism Section (3) ............................................... 84
6. ELECTRICAL PARTS LIST ........................................ 85

– 4 –
SECTION 1
GENERAL This section is extracted
from instruction manual.

– 5 –

– 6 –

– 7 –

– 8 –

– 9 –

– 10 –

– 11 –

– 12 –

– 13 –

– 14 –

– 15 –

– 16 –

– 17 –

– 18 –

– 19 –

– 20 –