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Sony CDX-V7800X Service Manual
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Sony CDX-V7800X Service Manual

Fm/am multi media player
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SERVICE MANUAL
• The tuner and CD sections have no adjustments.
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
Signal format system
PAL/NTSC
Tuner section
FM
Tuning range
FM tuning interval:
50 kHz/200 kHz
switchable
87.5 – 108 MHz
(at 50 kHz step)
87.5 – 107.9 MHz
(at 200 kHz step)
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
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
AM tuning interval:
9 kHz/10 kHz switchable
531 – 1,602 kHz
(at 9 kHz step)
530 – 1,710 kHz
(at 10 kHz step)
Aerial terminal
External aerial connector
Intermediate frequency 10.7 MHz/450 kHz
Sensitivity
30 µV
CDX-V7800X
Model Name Using Similar Mechanism
CD Drive Mechanism Type
Optical Pick-up Name

SPECIFICATIONS

Power amplifier section
Outputs
Speaker impedance
Maximum power output 50 W × 4 (at 4 ohms)
General
Outputs
Input
Tone controls
Power requirements
Dimensions
Mounting dimensions
Mass
Supplied accessories
Design and specifications are subject to change without
notice.
FM/AM MULTI MEDIA PLAYER
E Model
NEW
MG-383K-121//K
KSS-720A
Speaker outputs
(sure seal connectors)
4 – 8 ohms
Audio outputs
Video output
Power aerial relay control
lead
Power amplifier control
lead
Telephone ATT control
lead
Parking break control lead
Bass ±9 dB at 100 Hz
Treble ±9 dB at 10 kHz
12 V DC car battery
(negative earth)
Approx. 178 × 50 × 183 mm
(w/h/d)
Approx. 182 × 53 × 162 mm
(w/h/d)
Approx. 1.2 kg
Parts for installation and
connections (1 set)
Front panel case (1)
Card remote commander RM-X200
1

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Summary of Contents for Sony CDX-V7800X

  • Page 1: Specifications

    CDX-V7800X SERVICE MANUAL E Model • The tuner and CD sections have no adjustments. Model Name Using Similar Mechanism CD Drive Mechanism Type MG-383K-121//K Optical Pick-up Name KSS-720A SPECIFICATIONS CD player section Power amplifier section System Compact disc digital audio...

  • Page 2: Table Of Contents

    COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 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.

  • Page 3: General

    SECTION 1 GENERAL This section extracted from instruction manual.

  • Page 7: Mp3 File Instruction

    MP3 FILE INSTRUCTION...

  • Page 9: Connections

    CONNECTIONS...

  • Page 10: Disassembly

    SECTION 2 DISASSEMBLY Note : Follow the disassembly procedure in the numerical order given. 2-1. SUB PANEL (CD) ASSY 4 two claws 6 sub panel (CD) assy 3 claw 2 PTT 2.6x6 5 CNP800 1 PTT 2.6x6 2-2. CD MECHANISM BLOCK 7 bracket (CD) 6 PTT 2.6x6 5 CD mechanism block...

  • Page 11: Main Board

    2-3. MAIN BOARD 4 screws (BTT) 6 MAIN board 5 screws (BTT) 3 PTT 2.6x8 2 PTT 2.6x8 1 PTT 2.6x8 2-4. HEAT SINK 7 heat sink 6 PTT 2.6x8 5 PTT 2.6x8 4 PTT 2.6x8 3 PTT 2.6x12 2 PTT 2.6x8 1 PTT 2.6x8...

  • Page 12: Chassis (T) Sub Assy

    2-5. CHASSIS (T) SUB ASSY 2 P 2x3 3 P 2x3 1 Unsolder the 4 chassis (T) sub assy lead wires. black white 2-6. LEVER SECTION 5 guide (disc) 6 lever (R) 3 tension spring (LR) 7 lever (L) 1 special screw 2 DISC IN SW board 4 claws...

  • Page 13: Servo Board

    2-7. SERVO BOARD 7 Special screw 6 Special screw 3 Removal the solders. 2 CN518 1 CN517 4 P 2x3 8 heat sink (CD) 9 SERVO board 5 LO motor sub assy (M903) 2-8. SHAFT ROLLER ASSY 3 retaing ring (RA) 4 shaft retainer shaft retainer washer...

  • Page 14: Floating Block Assy

    2-9. FLOATING BLOCK ASSY 6 floating block assy 7 compression spring (FL) 1 tension spring (KF1) 8 compression spring (FL) 4 Fit lever (D) in the direction of the arrow. 5 Turn loading ring in the direction of the arrow. 2 damper (T) 3 damper (T) 2-10.

  • Page 15: Diagrams

    SECTION 3 DIAGRAMS 3-1. IC PIN DESCRIPTIONS • IC513 CXP81960M-659R (CD SYSTEM CONTROL) Pin No. Pin Name Pin Description A MUTE Audio mute control output — Not used. (Open) CD ON CD servo power supply control output RW/R RF amplifier gain control output (H: CD-RW, L: CD-R/CD-DA) SLD MINUS Sled motor control output SELF SW...
  • Page 16 Pin No. Pin Name Pin Description SENS Sensitivity input from DSP IC. IN SW Disc in switch input 65, 66 — Not used. (Fixed at H in this set) MP3 playback control input (H: not playback, L: playback) Photo coupler input 3 (Not used in this set) SCLK Serial clock output to DSP IC.
  • Page 17 • IC514 CL8830-PE0 (MPEG DECODER) Pin No. Pin Name Pin Description RESERVED Fixed at L in this set. 2 – 4 HDATA0 – 2 8-bit bi-directional host data bus 0 – 2 input/output — Power supply pin (+3.3 V) HDATA3 8-bit bi-directional host data bus 3 input/output —...
  • Page 18 Pin No. Pin Name Pin Description MDATA7 Memory data 7 input/output LDQM SDRAM LDQM output UDQM SDRAM UDQM output — Power supply pin (+3.3 V) SDRAM write enable output — Ground SD-CLK SDRAM system clock output SD-CAS SDRAM column address output SD-RAS SDRAM row address output —...
  • Page 19 Pin No. Pin Name Pin Description — Ground RESERVED Fixed at L in this set. VDATA3 Video data bus 3 output — Power supply pin (+3.3 V) VDATA4 Video data bus 4 output — Ground VDATA5 Video data bus 5 output RESERVED Fixed at L in this set.
  • Page 20 Pin No. Pin Name Pin Description Read/write strobe input in I mode. Read strobe input in M mode.
  • Page 21 • IC801 µPD17708GC-618-3B9 (SYSTEM CONTROL) Pin No. Pin Name Pin Description SIRCS Wireless remote commander input SELF SW Self switch input DOOR Front panel open/close detection input NOSE Front panel with/without detection input — Not used. (Connect to ground) SYSRST Rest output for slave microcomputer IC.
  • Page 22 Pin No. Pin Name Pin Description ANT ON Car antenna control output EZ SEL Rotary commander shift key input POWER ON System power on/off control and power amplifier control output 61 – 63 — Not used. (Open) ST IN FM stereo indicator input (L: FM STEREO ON, H: FM MONO ON) LCD CK0 Clock data output for LCD driver IC.
  • Page 41 IC516 CXD2598Q 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 61 60 59 54 53 52 51 CLOCK GENERATOR BCKI ENPH EMPHI OP AMP ANALOG XVDD CONVERTER SWITCH SERIAL-IN DIGITAL DIGITAL ASYMMETRY INTERFACE INTERFACE...

  • Page 42: Exploded Views

    SECTION 4 EXPLODED VIEWS NOTE: • The mechanical parts with no reference • Color Indication of Appearance Parts The components identified by mark 0 or dotted line with mark number in the exploded views are not supplied. Example : 0 are critical for safety. •...

  • Page 43: Front Panel Section

    4-2. FRONT PANEL SECTION not supplied (DISPLAY board) LCD901 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-041-028-01 BUTTON (SOURCE) 3-041-036-02 BUTTON (1-6/M) 3-041-029-02 KNOB (VOL) 3-042-984-02 BUTTON (MODE/ENTER) 3-041-030-62 BUTTON (CROSS) 3-041-035-02 BUTTON (OFF) 3-042-967-02 CUSHION (CROSS) 3-041-034-02 BUTTON (MENU/SOUND) * 55 X-3378-426-1 HOLDER (LCD) ASSY...

  • Page 44: Cd Mechanism Section (1)

    4-3. CD MECHANISM SECTION (1) (MG-383K-121//K) M903 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 101 1-676-709-11 DISC IN SW BOARD * 111 A-3283-016-A SERVO BOARD, COMPLETE 3-040-039-02 CHASSIS (T) * 112 3-040-048-01 BRACKET (MOTOR) 3-040-038-01 SPRING (LR), TENSION 3-040-034-01 SPRING (RA), TENSION 3-040-050-01 LEVER (L)

  • Page 45: Cd Mechanism Section (2)

    4-4. CD MECHANISM SECTION (2) (MG-383K-121//K) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-040-025-01 ARM, CHUCKING A-3307-422-A CHASSIS (M) COMPLETE ASSY 3-040-031-01 DAMPER (T) 3-040-059-01 SPRING (TR), TENSION 3-040-056-01 LEVER (D) 3-040-057-01 LEVER (LOCK) 3-040-024-01 RETAINER (DISC) 3-040-058-01 GEAR (MDL) 3-040-053-01 RING, LOADING 3-040-052-01 WHEEL (U), WORM...

  • Page 46: Cd Mechanism Section (3)

    4-5. CD MECHANISM SECTION (3) (MG-383K-121//K) M901 M902 The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-3378-480-1 CHASSIS (OP) ASSY (INCLUDING M901)

  • Page 47: Electrical Parts List

    SECTION 5 DISC IN SW DISPLAY ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in • Items marked “*” are not stocked since The components identified by mark 0 or dotted line with mark the parts list may be different from the they are seldom required for routine service.
  • Page 48 DISPLAY LIMIT SW MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R935 1-216-864-11 METAL CHIP 1/16W < CAPACITOR > R936 1-216-045-00 METAL CHIP 1/10W R938 1-216-049-11 RES-CHIP 1/10W C401 1-163-007-11 CERAMIC CHIP 680PF R939 1-216-049-11 RES-CHIP 1/10W C402 1-163-007-11 CERAMIC CHIP...
  • Page 49 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C607 1-164-004-11 CERAMIC CHIP 0.1uF C923 1-163-038-11 CERAMIC CHIP 0.1uF C608 1-124-234-00 ELECT 22uF C924 1-163-021-11 CERAMIC CHIP 0.01uF C609 1-163-021-11 CERAMIC CHIP 0.01uF C925 1-163-021-11 CERAMIC CHIP 0.01uF C610 1-124-234-00 ELECT...
  • Page 50 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark D912 8-719-200-82 DIODE 11ES2-TA1B Q602 8-729-030-51 TRANSISTOR 2SA1515S-R-TP D913 8-719-200-82 DIODE 11ES2-TA1B Q603 8-729-120-28 TRANSISTOR 2SC2412K-T-146-R D914 8-719-200-82 DIODE 11ES2-TA1B Q604 8-729-120-28 TRANSISTOR 2SC2412K-T-146-R D919 8-719-422-64 DIODE MA8062-M-TX Q606 8-729-027-43 TRANSISTOR DTC114EK-T146 D920...
  • Page 51 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R428 1-216-089-11 RES-CHIP 1/10W R828 1-216-105-00 RES-CHIP 220K 1/10W R429 1-216-089-11 RES-CHIP 1/10W R829 1-216-105-00 RES-CHIP 220K 1/10W R430 1-216-049-11 RES-CHIP 1/10W R830 1-216-073-00 METAL CHIP 1/10W R431 1-216-085-00 METAL CHIP 1/10W...
  • Page 52 MAIN SERVO RELAY Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R918 1-469-144-21 FERRITE, EMI (SMD) C514 1-164-227-11 CERAMIC CHIP 0.022uF R919 1-469-144-21 FERRITE, EMI (SMD) C515 1-107-826-11 CERAMIC CHIP 0.1uF R920 1-216-073-00 METAL CHIP 1/10W C517 1-164-227-11 CERAMIC CHIP 0.022uF...
  • Page 53 SERVO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C572 1-126-246-11 ELECT CHIP 220uF FB517 1-216-295-11 SHORT C573 1-162-927-11 CERAMIC CHIP 100PF FB518 1-469-144-21 FERRITE, EMI (SMD) C574 1-162-927-11 CERAMIC CHIP 100PF FB519 1-469-144-21 FERRITE, EMI (SMD) C575 1-125-838-11 CERAMIC CHIP 2.2uF...
  • Page 54 SERVO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R516 1-216-845-11 METAL CHIP 100K 1/16W R584 1-216-829-11 METAL CHIP 4.7K 1/16W R517 1-216-845-11 METAL CHIP 100K 1/16W R585 1-216-834-11 METAL CHIP 1/16W R519 1-216-845-11 METAL CHIP 100K 1/16W R586...
  • Page 55 SERVO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R665 1-216-837-11 METAL CHIP 1/16W MISCELLANEOUS R667 1-216-833-11 METAL CHIP 1/16W *************** R668 1-216-841-11 METAL CHIP 1/16W R670 1-216-809-11 METAL CHIP 1/16W 1-792-194-41 CORD (WITH CONNECTOR) (POWER) R671 1-216-809-11 METAL CHIP 1/16W...
  • Page 56 CDX-V7800X Ref. No. Part No. Description Remark PARTS FOR INSTALLATION AND CONNECTIONS *************************************** 3-014-370-21 FRAME, FITTING 3-030-929-03 SPRING, FITTING 3-934-325-01 SCREW (+K 5X8 TP) 3-041-027-01 COLLAR X-3366-405-1 SCREW ASSY (EXP), FITTING 3-386-828-01 SCREW, FITTING 3-349-410-01 BUSHING 1-562-593-11 CONNECTOR (CL-2218T) 1-792-194-41 CORD (WITH CONNECTOR) (POWER)

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