Sony CDX-C6850 Service Manual
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Sony CDX-C6850 Service Manual

Sony CDX-C6850 Service Manual

Fm/am compact disc player
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3 7 63 1515 0
SERVICE MANUAL
AUDIO POWER SPECIFICATIONS (US Model)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
17 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.
TE
L 13942296513
Other Specifications
CD player section
System
Compact disc digital audio
system
Signal-to-noise ratio
90 dB
Frequency response
10 – 20,000 Hz
Wow and flutter
Below measurable limit
Laser Diode Properties
Material
GaAlAs
Wavelength
780 nm
Emission Duration
Continuous
Less than 44.6 µW*
Laser output power
* 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
87.5 – 107.9 MHz
Antenna terminal
External antenna connector
Intermediate frequency 10.7 MHz
Usable sensitivity
10 dBf
Selectivity
75 dB at 400 kHz
Signal-to-noise ratio
65 dB (stereo),
68 dB (mono)
Harmonic distortion at 1 kHz
0.7% (stereo),
0.5% (mono)
Separation
35 dB at 1 kHz
Frequency response
30 – 15,000 Hz
AM
Tuning range
530 – 1,710 kHz
Antenna terminal
External antenna connector
Intermediate frequency 10.71 MHz/450 kHz
30 µV
Sensitivity
www
.
MICROFILM
http://www.xiaoyu163.com
SPECIFICATIONS
x
ao
y
i
http://www.xiaoyu163.com
CDX-C6850
8
Model Name Using Similar Mechanism
CD Drive Mechanism Type
Optical Pick-up Name
Q Q
3
6 7
1 3
Power amplifier section
Outputs
Speaker impedance
Maximum power output 40 W × 4 (at 4 ohms)
General
Outputs
Tone controls
Power requirements
Dimensions
Mounting dimensions
Mass
Supplied accessories
Design and specifications are subject to change without
notice.
FM/AM COMPACT DISC PLAYER
u163
.
– 1 –
2 9
9 4
2 8
Canadian Model
1 5
0 5
8
2 9
9 4
Speaker outputs
(sure seal connectors)
4 – 8 ohms
Line outputs (2)
Power antenna relay
control lead
Power amplifier control
lead
Telephone ATT control
lead
Bass ±8 dB at 100 Hz
Treble ±8 dB at 10 kHz
12 V DC car battery
(negative ground)
Approx. 178 × 50 × 185 mm
× 2 × 7
(7
in.)
1/8
3/8
(w/h/d)
Approx. 182 × 53 × 162 mm
× 2
× 6
(7
in.)
1/4
1/8
1/2
(w/h/d)
Approx. 1.2 kg (2 lb. 10 oz.)
Parts for installation and
connections (1 set)
Front panel case (1)
m
co
9 9
US Model
CDX-C5750/C5850
MG-363T-121
KSS-521A
2 8
9 9

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  • Page 1 CDX-C6850 3 7 63 1515 0 SERVICE MANUAL US Model Canadian Model SPECIFICATIONS Model Name Using Similar Mechanism CDX-C5750/C5850 CD Drive Mechanism Type MG-363T-121 AUDIO POWER SPECIFICATIONS (US Model) Optical Pick-up Name KSS-521A POWER OUTPUT AND TOTAL HARMONIC DISTORTION...

  • Page 2: Table Of Contents

    DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT 5-5. CD Mechanism Section (3) ..........56 CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY 6. ELECTRICAL PARTS LIST ........57 DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
  • Page 3 http://www.xiaoyu163.com SECTION 1 GENERAL 3 7 63 1515 0 This section is extracted from instruction manual. L 13942296513 u163 – 3 – http://www.xiaoyu163.com...
  • Page 4 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 – 4 – http://www.xiaoyu163.com...
  • Page 5 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 – 5 – http://www.xiaoyu163.com...
  • Page 6 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 – 6 – http://www.xiaoyu163.com...
  • Page 7 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 – 7 – http://www.xiaoyu163.com...
  • Page 8 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 – 8 – http://www.xiaoyu163.com...
  • Page 9 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 – 9 – http://www.xiaoyu163.com...

  • Page 10: Disassembly

    http://www.xiaoyu163.com SECTION 2 DISASSEMBLY 3 7 63 1515 0 Note : Follow the disassembly procedure in the numerical order given. 2-1. COVER 1 claw 4 cover 3 claws 2 claw L 13942296513 2-2. FRONT PANEL ASSY 3 Push the bearing (L). 2 Push the bearing (R).

  • Page 11: Sub Panel Assy

    http://www.xiaoyu163.com 3 7 63 1515 0 2-3. SUB PANEL ASSY 5 claws 1 PTT 2.6x6 6 CNP800 4 claw 3 PTT 2.6x6 2 PTT 2.6x6 7 sub panel assy L 13942296513 2-4. CD MECHANISM BLOCK 6 PTT 2.6x6 1 PTT 2.6x6 7 bracket (M/D) 2 PTT 2.6x6 4 CD mechanism block...

  • Page 12: Main Board

    http://www.xiaoyu163.com 3 7 63 1515 0 2-5. MAIN BOARD 4 ground point screws (PTT 2.6x6) 5 ground point screw (PTT 2.6x6) 3 PTT 2.6x8 6 MAIN board 2 PTT 2.6x8 1 PTT 2.6x8 L 13942296513 2-6. HEAT SINK 1 cord (with connector) (ANT) 2 PTT 2.6x8 u163 3 PTT 2.6x12...

  • Page 13: Chassis (T) Sub Assy

    http://www.xiaoyu163.com 3 7 63 1515 0 2-7. CHASSIS (T) SUB ASSY 4 P 2x3 3 P 2x3 5 chassis (T) sub assy 1 Unsolder the lead wires. 2 P 2x3 white black L 13942296513 2-8. LEVER ASSY 5 guide (disc) 6 lever (R) assy 3 tension spring (LR) 7 lever (L) assy...

  • Page 14: Servo Board

    http://www.xiaoyu163.com 3 7 63 1515 0 2-9. SERVO BOARD 6 PS 2x4 5 PS 2x4 2 CN2 1 CN3 3 P 2x3 7 SERVO board 4 loading motor assy L 13942296513 2-10. ROLLER ASSY washer washers washer Fig. 1 3 roller assy 4 PS 2x3 2 arm (roller) 5 LOAD SW board...

  • Page 15: Chassis (Op) (O/S) Assy

    http://www.xiaoyu163.com 3 7 63 1515 0 2-11. CHASSIS (OP) (O/S) ASSY 7 chassis (OP) (O/S) assy 8 compression spring (FL) 1 tension spring (KF1) 9 compression spring (FL) 2 tension spring (KR1) 5 Fit lever (D) in the direction of the arrow. 6 Turn loading ring in the direction of the arrow.

  • Page 16: Electrical Adjustments

    http://www.xiaoyu163.com SECTION 3 ELECTRICAL ADJUSTMENTS 3 7 63 1515 0 0 dB = 1 µV TUNER SECTION FM Auto Scan/Stop Level Adjustment Setting : SOURCE button : FM Cautions during repair When the tuner unit is defective, replace it by a new one because its internal block is difficult to repair.
  • Page 17 http://www.xiaoyu163.com 3 7 63 1515 0 FM Stereo Separation Adjustment (WIDE) FM Stereo Separation Adjustment (NARROW) Setting : Setting : SOURCE button : FM1 SOURCE button : FM1 FM RF signal FM RF signal generator generator level meter level meter antenna antenna terminal...
  • Page 18 http://www.xiaoyu163.com 3 7 63 1515 0 AM Auto Scan/Stop Level Adjustment Adjustment Location : tuner unit (TU601) Setting : SOURCE n MODE button : AM –set upper view– 30 Ω 15 pF 65 pF AM RF signal generator AM dummy antenna (50 Ω...

  • Page 19: Cd Section

    http://www.xiaoyu163.com 3 7 63 1515 0 Focus Gain Adjustment (Coarse adjustment) CD SECTION This adjustment is not required unless the following parts are replaced: • Optical pick-up Note: • 1. CD Block basically constructed to operate without adjustment. Therefore, check each item in order given. Procedure: 2.

  • Page 20: Ic Pin Description

    http://www.xiaoyu163.com SECTION 4 DIAGRAMS 3 7 63 1515 0 4-1. IC PIN DESCRIPTION • IC801 MB90574PFV-G-179-BND (SYSTEM CONTROL) Pin No. Pin Name Pin Description LD ON Laser ON/OFF control output Focus OK signal detection input XLAT25 CD signal processing latch output DATA25 CD signal serial data output XRST...
  • Page 21 http://www.xiaoyu163.com 3 7 63 1515 0 Pin No. Pin Name Pin Description AMP ON Power amplifier power control output TXT ON Reset output to CD-TEXT decoder IC. VOL ATT Electric volume mute control output — Not used. (Open) System attenuate control output RC IN1 Rotary commander shift key input 1 TU ATT...
  • Page 22 http://www.xiaoyu163.com 3 7 63 1515 0 Pin No. Pin Name Pin Description 112, 113 — Not used. (Open) CD LD Loading motor control output (Loading direction) CD EJ Loading motor control output (Eject direction) L SW Sled limit switch detection input IN SW/(PH1) Disc insertion detection input D SW...

  • Page 23: Block Diagram -Cd Section

    CDX-C6850 3 7 6 3 1 5 1 5 0 4-2. BLOCK DIAGRAM — CD SECTION — DIGITAL SIGNAL OPTICAL PICK-UP RF AMP, SERVO CONTROL PROCESSOR D/A CONVERTER KSS-521A IC702 MAIN 35 PD1 14 RF PCMD VOUTL SECTION LRCK...

  • Page 24: Block Diagram -Main Section

    CDX-C6850 3 7 6 3 1 5 1 5 0 4-3. BLOCK DIAGRAM — MAIN SECTION — SUB OUT IC406 PJ400 ELECTRONIC VOLUME IC401 PJ400 FRONT R-CH R-CH SUBOUT+ PJ401 LINE AMP BUS AUDIO IN SUBOUT- IC402 LINE OUT...

  • Page 25: Circuit Boards Location

    CDX-C6850 3 7 6 3 1 5 1 5 0 • Waveforms (MODE:PLAY) 4-4. CIRCUIT BOARDS LOCATION THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.)

  • Page 26: Printed Wiring Boards -Cd Mechanism Section

    CDX-C6850 3 7 6 3 1 5 1 5 0 4-5. PRINTED WIRING BOARDS — CD MECHANISM SECTION — • Semiconductor Location Ref. No. Location 1 3 9 4 2 2 9 6 5 1 3 (Page 35) M902...

  • Page 27: Schematic Diagram -Cd Mechanism Section

    CDX-C6850 3 7 6 3 1 5 1 5 0 4-6. SCHEMATIC DIAGRAM — CD MECHANISM SECTION — • Refer to page 28 for Waveforms. • Refer to page 48 for IC Block Diagrams. 1 3 9 4 2 2 9 6 5 1 3...

  • Page 28: Printed Wiring Board -Main Section

    CDX-C6850 3 7 6 3 1 5 1 5 0 4-7. PRINTED WIRING BOARD — MAIN SECTION — • Semiconductor Location Ref. No. Location Ref. No. Location (D402) IC801 D403 IC803 D-14 (D601) (IC901) F-13 (D604) (IC902) D701 (D702)
  • Page 29 CDX-C6850 3 7 6 3 1 5 1 5 0 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 (Page 29) (Page 46) – 35 – – 36 – http://www.xiaoyu163.com...

  • Page 30: Schematic Diagram -Main Section (1/2)

    CDX-C6850 4-8. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — • Refer to page 48 for IC Block Diagrams. 3 7 6 3 1 5 1 5 0 1 3 9 4 2 2 9 6 5 1 3 w w w...

  • Page 31: Schematic Diagram -Main Section (2/2)

    CDX-C6850 3 7 6 3 1 5 1 5 0 4-9. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — • Refer to page 50 for IC Block Diagrams. (Page 38) 1 3 9 4 2 2 9 6 5 1 3...

  • Page 32: Printed Wiring Board -Display Section

    CDX-C6850 3 7 6 3 1 5 1 5 0 4-10. PRINTED WIRING BOARD — DISPLAY SECTION — (Page 46) 1 3 9 4 2 2 9 6 5 1 3 • Semiconductor Location Ref. No. Location Ref. No.

  • Page 33: Schematic Diagram -Display Section

    CDX-C6850 3 7 6 3 1 5 1 5 0 4-11. SCHEMATIC DIAGRAM — DISPLAY SECTION — (Page 47) 1 3 9 4 2 2 9 6 5 1 3 w w w note: • Voltage is dc with respect to ground under no-signal u 1 6 3 (detuned) condition.

  • Page 34: Printed Wiring Board -Relay Section

    CDX-C6850 3 7 6 3 1 5 1 5 0 4-12. PRINTED WIRING BOARD — RELAY SECTION — (Page 35) 1 3 9 4 2 2 9 6 5 1 3 (Page 42) w w w u 1 6 3 –...

  • Page 35: Schematic Diagram -Relay Section

    CDX-C6850 3 7 63 1515 0 4-13. SCHEMATIC DIAGRAM — RELAY SECTION — (Page 40) (Page 43) L 13942296513 u163 – 47 – http://www.xiaoyu163.com...
  • Page 36 http://www.xiaoyu163.com 3 7 63 1515 0 • IC Block Diagrams IC1 CXD2507AQ IC402, 403 TDA8574 VCCL BUFFER VCCL SERVO AUTO DATA SEQUENCER CL– SVRL XRST LIFT SENS BUFFER SUB CODE MUTE PROCESSOR INTERFACE SQCK DIGITAL LOCK SQSO REFERENCE VCCL TEST EXCK LGND SIGNAL...
  • Page 37 http://www.xiaoyu163.com 3 7 63 1515 0 IC2 CXA1782BQ 27 26 25 LEVEL S MIRR SENS RF IV AMP1 DFCT C.OUT XRST RF IV AMP2 FE BIAS IIL DATA REGISTER INPUT SHIFT REGISTER DATA ADDRESS DECODER L 13942296513 OUTPUT DECODER TOG1-3 FS1-4 TG1-2 TM1-7...
  • Page 38 http://www.xiaoyu163.com 3 7 63 1515 0 IC401 TDA7462D SE3L SE3R MUTE PAUSE PAUSE DETECT FRONT INPUT TREBLE/ VOICE BANDPASS OUT FL LOUDNESS VOLUME FADER GAIN & SOFT BASS CONTROL SE1L CONTROL AUTO MUTE CONTROL CIRCUIT CIRCUIT SE1R ZERO CIRCUIT FRONT MD–...
  • Page 39 http://www.xiaoyu163.com 3 7 63 1515 0 IC601 TDA7427AD1 LPOUT VDD1 VDD2 LP FM SWITCH CHARGE PHASE 11 BIT PROG LP1/LP2 GND AM PUMP COMP COUNTER LP HC LP AM SWITCH SWITCH SWM/DIR SWM/DIR V REF AM IN SWITCH AM/FM INLOCK 6 BIT PROG PRE COUNTER DETECTOR...

  • Page 40: Exploded Views

    http://www.xiaoyu163.com SECTION 5 EXPLODED VIEWS 3 7 63 1515 0 NOTE: • The mechanical parts with no reference • Color Indication of Appearance Parts The components identified by number in the exploded views are not supplied. Example : mark ! or dotted line with mark. •...

  • Page 41: Front Panel Section

    http://www.xiaoyu163.com 3 7 63 1515 0 5-2. FRONT PANEL SECTION not supplied (DISPLAY board) L 13942296513 LCD501 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-030-947-01 BUTTON (SOURCE) 3-030-950-01 BUTTON (OPEN) 3-030-943-01 KNOB (VOL) 3-032-321-01 SPRING (OPEN) 3-030-944-01 LEVER (SEEK/AMS) 3-030-942-01 BUTTON (DSPL) * 54...

  • Page 42: Cd Mechanism Section (1)

    http://www.xiaoyu163.com 3 7 63 1515 0 5-3. CD MECHANISM SECTION (1) (MG-363T-121) L 13942296513 M903 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 101 1-659-836-11 DISC IN SW BOARD 3-931-902-04 ARM (ROLLER) * 102 A-3291-816-B CHASSIS (T) SUB ASSY 3-936-756-01 ROLLER (D) 3-931-909-01 SPRING (LR), TENSION 3-321-393-01 WASHER, STOPPER...

  • Page 43: Cd Mechanism Section (2)

    http://www.xiaoyu163.com 3 7 63 1515 0 5-4. CD MECHANISM SECTION (2) (MG-363T-121) L 13942296513 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-931-893-01 ARM, CHUCKING A-3277-802-C CHASSIS (M) ASSY 3-931-897-01 DAMPER (T) 3-931-883-01 SPRING (TR), TENSION 3-931-879-02 LEVER (D) 3-931-881-01 LEVER (LOCK) * 154...

  • Page 44: Cd Mechanism Section (3)

    http://www.xiaoyu163.com 3 7 63 1515 0 5-5. CD MECHANISM SECTION (3) (MG-363T-121) M901 M902 L 13942296513 The components identified by Les composants identifiés par une mark ! or dotted line with mark. marque ! sont critiques pour la ! are critical for safety. sécurité.

  • Page 45: Electrical Parts List

    http://www.xiaoyu163.com SECTION 6 DISC IN SW DISPLAY ELECTRICAL PARTS LIST 3 7 63 1515 0 NOTE: • Due to standardization, replacements in • Items marked “*” are not stocked since The components identified by the parts list may be different from the they are seldom required for routine service.
  • Page 46 http://www.xiaoyu163.com DISPLAY LIMIT SW LOAD SW MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark ∗ R533 1-216-045-00 METAL CHIP 1/10W 1-659-835-12 LIMIT SW BOARD ∗∗∗∗∗∗∗∗∗∗∗∗∗∗ R534 1-216-049-11 RES,CHIP 1/10W R535 1-216-053-00 METAL CHIP 1.5K 1/10W...
  • Page 47 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C223 1-163-038-00 CERAMIC CHIP 0.1uF C698 1-163-009-11 CERAMIC CHIP 0.001uF C224 1-163-022-00 CERAMIC CHIP 0.012uF C699 1-163-009-11 CERAMIC CHIP 0.001uF C229 1-163-009-11 CERAMIC CHIP 0.001uF C702...
  • Page 48 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < SURGE ABSORBER > < JUMPER RESISTOR > CP601 1-803-335-21 ABSORBER, CHIP SURGE JR602 1-216-295-00 SHORT JR611 1-216-295-00 SHORT < DIODE > JR614 1-216-295-00 SHORT JR616...
  • Page 49 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Q907 8-729-901-05 TRANSISTOR DTA124EK R227 1-216-064-00 METAL CHIP 4.3K 1/10W Q908 8-729-027-52 TRANSISTOR DTC124EKA-T146 R228 1-216-082-00 RES,CHIP 1/10W Q909 8-729-015-11 TRANSISTOR 2SD1802FAST-TL R229 1-216-082-00 RES,CHIP 1/10W...
  • Page 50 http://www.xiaoyu163.com MAIN RELAY SERVO 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R805 1-216-097-00 RES,CHIP 100K 1/10W R920 1-216-097-00 RES,CHIP 100K 1/10W R806 1-216-049-11 RES,CHIP 1/10W R925 1-216-097-00 RES,CHIP 100K 1/10W R807 1-216-049-11 RES,CHIP 1/10W...
  • Page 51 http://www.xiaoyu163.com SERVO 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-163-011-11 CERAMIC CHIP 0.0015uF 10% JR05 1-216-296-00 SHORT 1-163-809-11 CERAMIC CHIP 0.047uF JR06 1-216-296-00 SHORT 1-164-004-11 CERAMIC CHIP 0.1uF JR07 1-216-296-00 SHORT 1-126-206-11 ELECT CHIP 100uF 6.3V...
  • Page 52 http://www.xiaoyu163.com SERVO 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark JR59 1-216-296-00 SHORT 1-216-081-00 METAL CHIP 1/10W JR60 1-216-296-00 SHORT 1-216-109-00 METAL CHIP 330K 1/10W JR61 1-216-296-00 SHORT 1-216-105-00 RES,CHIP 220K 1/10W JR62 1-216-296-00 SHORT...
  • Page 53 http://www.xiaoyu163.com 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark ACCESSORIES & PACKING MATERIALS PARTS FOR INSTALLATION AND CONNECTIONS ∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗ ∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗ 3-865-912-11 MANUAL, INSTRUCTION (ENGLISH) 3-014-370-21 FRAME, FITTING 3-865-914-11 MANUAL, INSTRUCTION, INSTALL (ENGLISH, 3-030-929-01 SPRING, FITTING FRENCH) 3-934-325-01 SCREW (+K 5X8 TP)
  • Page 54 CDX-C6850 3 7 63 1515 0 L 13942296513 u163 Sony Corporation 99A0419-1 9-926-421-11 Personal & Mobile Communication Company Printed in Japan C1999. 1 – 66 – Published by Quality Assurance Dept. http://www.xiaoyu163.com...

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