Sony CDP-XB920 Service Manual
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Sony CDP-XB920 Service Manual

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CDP-XB920/XB920E
SERVICE MANUAL
Compact disc player
Laser
Semiconductor laser (λ = 780 nm)
Emission duration: continuous
Laser output
Max 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 with 7 mm aperture.
Frequency response
2 Hz to 20 kHz ± 0.5 dB
Signal-to-noise ratio
More than 113 dB
Dynamic range
More than 99 dB
Harmonic distortion
Less than 0.0025%
Channel separation
More than 105 dB
Outputs
Jack
type
LINE OUT
Phono
jacks
DIGITAL
Optical
OUT
output
(OPTICAL)
connector
DIGITAL
Coaxial
OUT
output
(COAXIAL)
connector
PHONES
Stereo
(only for CDP-XB920, phone
CDP-XB820 and
jack
CDP-XB720)
MICROFILM
Photo : CDP-XB920
SPECIFICATIONS
Maximum
Load
output
impedance
level
2 V
Over 50 kilohms
(at 50 kilohms)
–18 dBm
Wave length:660nm
0.5 Vp-p
75 ohms
(at 75 ohms)
10 mW
32 ohms
Model Name Using Similar Mechanism
CD Mechanism Type
Base Unit Type
Optical Pick-up Type
General
Power requirements
Power consumption
Dimensions (approx.)
(w/h/d)
Mass (approx.)
Supplied accessories
Audio cord (2 phono plugs–2 phono plugs) (1)
Remote commander (remote) (1)
Sony SUM-3 (NS) batteries (2)
Stabilizer (1)
Design and specifications are subject to change without notice.
COMPACT DISC PLAYER
AEP Model
CDP-XB920
UK Model
E Model
CDP-XB920E
CDP-XE900/XE900E
CDM36C-14D
BU-14D
KSS-213B/K-N
220 V – 230 V AC, 50/60 Hz
15W
430 × 115 × 290 mm
(17 × 4 5/8 × 11 1/2 in.) incl.
projecting parts
5.5 kg (12 lbs 2 oz)

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Summary of Contents for Sony CDP-XB920

  • Page 1 Audio cord (2 phono plugs–2 phono plugs) (1) Signal-to-noise ratio More than 113 dB Remote commander (remote) (1) Dynamic range More than 99 dB Sony SUM-3 (NS) batteries (2) Harmonic distortion Less than 0.0025% Stabilizer (1) Channel separation More than 105 dB Design and specifications are subject to change without notice.

  • Page 2: Table Of Contents

    TED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPO- NENTS WITH SONY PARTS WHOSE PART NUM- BERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
  • Page 3 CD-TEXT TEST DISC This unit is able to display the test data (character information) written in the CD on its fluorescent indicator tube. The CD-TEXT TEST DISC (TGCS-313:4-989-366-01) is used for checking the display. To check, perform the following procedure. Checking Method: Turn ON the power, set the disc on a tray, and chuck the disc.
  • Page 4 Table 2: CD-TEXT TEST DISC Recorded Contents and Display (TRACKS NO. 33 to 99) (In this unit, some special characters cannot be displayed. This is no a fault.) TRACK Recorded contents Display 100Hz/0dB/R* 1 0 0 H Z / 0 D – – – – B/R are not displayed 1kHz/0dB/R* 1 K H Z / 0 D B –...

  • Page 5: Servicing Note

    SECTION 1 SERVICING NOTE HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK TURNS OFF OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the potential difference generated by the Insert a screwdriver into the aperture of the unit bottom, and charged electrostatic load, etc.

  • Page 6: General

    SECTION 2 GENERAL LOCATION AND FUNCTION OF CONTROLS [FRONT PANEL] 6 7 8 9!º 2345 @¡ @º !ª !• !¶ !§ @™ !£ !¡ !∞ !¢ !™ 1 U (POWER) switch !™ p (stop) button 2 PLAY MODE button !£ P (pause) button 3 REPEAT button !¢...
  • Page 7 This section is extracted from operating instructions. — 7 —...

  • Page 8: Disassembly

    SECTION 3 DISASSEMBLY Note : Follow the disassembly procedure in the numerical order given. 3-1. SLIDE RACK 2 Slide rack (Disengage claws to remove the rack.) claws claws 1 Eject CD by moving "A" in the direction of the arrow. 3-2.

  • Page 9: Test Mode

    SECTION 4 TEST MODE 4-1. AF MODE Button No. Button No. Button Button The following checks can be performed in the AF mode, which is Displayed Displayed set by connecting the TP51 (AFADJ) terminal on MAIN board to LANGUAGE EDIT/ the Ground and turning on the power.
  • Page 10 4-2. ADJ MODE [MAIN BOARD] — (Component Side) — The following operations are performed in the ADJ mode, which is TP21 TP51 set by connecting the TP21 (ADJ) terminal to the Ground and turning (ADJ) (AF ADJ) on the power. R350 •...

  • Page 11: Electrical Block Checking

    SECTION 5 ELECTRICAL BLOCK CHECKING Note: Note: A clear RF signal waveform means that the shape “◊” can be CD Block is basically designed to operate without adjustment. clearly distinguished at the center of the waveform. Therefore, check each item in order given. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
  • Page 12 Check the level B of the oscilloscope's waveform and the A RF PLL Free-run Frequency Check (DC voltage) of the center of the Traverse waveform. Procedure : Confirm the following : Connect frequency counter to test point TP (MNT1) with lead A/B x 100 = less than ±...

  • Page 13: Diagrams

    SECTION 6 DIAGRAMS 6-1. CIRCUIT BOARDS LOCATION THIS NOTE IS COMMON FOR PRINTED WIRING • Waveform BOARDS AND SCHEMATIC DIAGRAMS. TP1 (RF) (In addition to this necessary note is printed in each block.) For schematic diagrams. 1.5Vp-p Note: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics (PLAY) and tantalums.

  • Page 14: Block Diagram

    CDP-XB920/XB920E 6-2. BLOCK DIAGRAM DIGITAL SERVO/ OPTICAL PICK-UP IC208 IC101 BLOCK IC251 OPTICAL • SIGNAL PATH (KSS-213B) RF AC D OUT DIGITAL DSP/ PHOTO DETECTOR RF AMP D/A CONV. IC103 IC301 IC251 J351 :DIGITAL OUT RF DC PCMD DATA CURRENT PULSE COXIAL D/A CONV.

  • Page 15: Schematic Diagram - Main Section (1/2)

    CDP-XB920/XB920E 6-3. SCHEMATIC DIAGRAM – MAIN SECTION (1/2) – • See page 37 for IC Block Diagram. — 17 — — 18 —...

  • Page 16: Schematic Diagram - Main Section (2/2)

    CDP-XB920/XB920E 6-4. SCHEMATIC DIAGRAM – MAIN SECTION (2/2) – • See page 37 for IC Block Diagram. — 19 — — 20 —...
  • Page 17 CDP-XB920/XB920E 6-5. PRINTED WIRING BOARDS – MAIN SECTION – • See page 13 for Circuit Boards Location. • Semiconductor Location DISP BOARD SERVO BOARD POWER BOARD DISP BOARD (Page 25) (Page 33) (Page 29) (Page 25) Ref. No. Location MAIN BOARD...

  • Page 18: Schematic Diagram- Display Section

    CDP-XB920/XB920E 6-6. SCHEMATIC DIAGRAM – DISPLAY SECTION – • See page 41 for IC Pin Function Description. — 23 — — 24 —...

  • Page 19: Printed Wiring Board - Display Section

    CDP-XB920/XB920E 6-7. PRINTED WIRING BOARDS – DISPLAY SECTION – • See page 13 for Circuit Boards Location. • Semiconductor DISP BOARD Location Ref. No. Location FL501 (FLUORESCENT INDICATOR TUBE) D621 D958 IC801 IC802 Q621 Q801 Q802 30 31 EDIT/ TIME FADE...

  • Page 20: Schematic Diagram - Power Section

    CDP-XB920/XB920E 6-8. SCHEMATIC DIAGRAM – POWER SECTION – — 27 — — 28 —...
  • Page 21 CDP-XB920/XB920E 6-9. PRINTED WIRING BOARDS – POWER SECTION – • See page 13 for Circuit Boards Location. • Semiconductor POWER BOARD TRANS BOARD Location Ref. No. Location D901 D902 D903 D904 D911 D912 D913 D914 D921 D922 SERVO D923 BOARD...

  • Page 22: Schematic Diagram - Servo Section

    CDP-XB920/XB920E 6-10. SCHEMATIC DIAGRAM – SERVO SECTION – • See page 38 for IC Block Diagram • See page 39 for IC Pin Function Description. — 31 — — 32 —...
  • Page 23 CDP-XB920/XB920E 6-11. PRINTED WIRING BOARDS – SERVO SECTION – • See page 13 for Circuit Boards Location. POWER SLED BOARD MAIN BOARD BOARD (Page 36) (Page 21) (Page 29) SERVO BOARD SERVO BOARD (SIDE A) (SIDE B) LOADING BOARD (Page 36)

  • Page 24: Schematic Diagram - Motor Section

    CDP-XB920/XB920E 6-12. SCHEMATIC DIAGRAM – MOTOR SECTION – 6-13. PRINTED WIRING BOARDS – MOTOR SECTION – • See page 13 for Circuit Boards Location. SLED BOARD SPINDLE BOARD LIMIT SW M151 SPINDLE (11) MOTOR 1-658-708- SERVO BOARD (Page 32) 1-658-709-...

  • Page 25: Ic Block Diagrams

    6-14. IC BLOCK DIAGRAMS C301 CXD8735N (MAIN BOARD) INVO INVI BCKI TEST OVERFLOW DETECTER DATA1 128FsO FIR1 FIR2 FIR3 LRCKI DINIT FIR4 INIT OVFLAG MUTEL OVERFLOW DETECTER SHIFT MUTER FIR1 FIR2 FIR3 LATCH FIR4 SYSM 64FSI MCKIN 3rd order X0.75 NOISE L.I.P DVSS1...
  • Page 26 IC104 LA6510L (SERVO BOARD) VOUT1 VOUT2 VSENCE2 VSENCE1 IC103 CXA2568M (SERVO BOARD) IC302 CXA8055M (MAIN BOARD) APC PD AMP LC/PD LD_ON ANALOG HOLD CIREF RIREF VOLUME REFERENCE VREF AGCVTH VREF CONTROL VOLTAGE APC LD AMP AGND VCNT CIRCUIT CIRCUIT HOLD_SW AGND AGCCONT (50%/30%...

  • Page 27: Ic Pin Function Description

    6-15. IC PIN FUNCTION DESCRIPTION • IC 101 DIGITAL SIGNAL PROCESSOR (CXD2585Q) Pin No. Pin Name Description DVDD — Digital power supply XRST System reset “L” : reset MUTE Muting input “H” : mute DATA Serial data input, supplied from CPU XLAT Latch input, supplied from CPU CLOK...
  • Page 28 Pin No. Pin Name Description Tracking error signal input Center servo analog input RFDC RF signal input ADIO Test pin (Not used) AVSS0 — Analog GND IGEN Stabilized current input for operation amplifiers AVDD0 — Analog power supply ASYO EFM full swing output ASYI Asymmetry comparate voltage input RFAC...
  • Page 29 • IC 801 (SYSTEM CONTROL) CXP82832-009Q Pin No. Pin Name Description Fluorescent display tube grid 13 output Fluorescent display tube grid 14 output NC (+5V) — Not used. Connected to 5V +5 V (PEO/EC1/1NT0) — Not used. Connected to 5V SCOR Signal processing IC data sync input GND (PE2/1NT2)
  • Page 30 Pin No. Pin Name Description — Not used. Open — Not used. Open — Not used. Open — Not used. Open — Not used. Open — Not used. Open — Not used. Open — Not used. Open — Not used. Open —...

  • Page 31: Exploded Views

    SECTION 7 EXPLODED VIEWS NOTE: • -XX, -X mean standardized parts, so they may • The mechanical parts with no reference number The components identified by mark ! or have some differences from the original one. in the exploded views are not supplied. dotted line with mark ! are critical for safety.
  • Page 32 4-950-189-01 KNOB (A) (VOL) (BLACK) 4-997-200-21 BASE (L), PANEL (SILVER) 4-950-189-61 KNOB (A) (VOL) (SILVER) * 64 A-4699-979-A DISP BOARD, COMPLETE (XB920/XB920E: UK) 4-942-568-41 EMBLEM (NO.5), SONY * 64 A-4724-190-A DISP BOARD, COMPLETE (XB920E: SP, MY) 4-997-199-01 PANEL, FRONT (BLACK) (XB920) * 65...
  • Page 33 7-3. MAIN SECTION not supplied not supplied not supplied T901 not supplied not supplied not supplied not supplied not supplied not supplied Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks X-4949-523-1 FOOT ASSY (BLACK) 1-776-998-11 WIRE (FLAT TYPE) (21 CORE) 3-979-112-01 SCREW SW (+) BVTP 3 ×...
  • Page 34 7-4. CD MECHANISM SECTION (CDM36C-14D) Base unit not supplied M151 not supplied not supplied not supplied not supplied Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks * 201 4-977-902-01 PANEL (DRAWER) * 212 4-977-891-01 PLATE, GROUND 4-933-134-01 SCREW (+PTPWH M2.6×6) 4-977-898-01 LEVER (SWING) 4-986-919-01 LIMITTER (LEVER)
  • Page 35 7-5. BASE UNIT SECTION (BU-14D) not supplied M101 not supplied not supplied not supplied not supplied not supplied M102 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 4-977-925-01 SPRING(SLIDE BASE),COMPRESSION * 262 4-993-919-01 SPRING (A) (OP), LEAF 4-977-926-01 RACK, SLIDE 4-917-562-01 INSULATOR 4-977-923-01 SHAFT, SLED...

  • Page 36: Electrical Parts List

    SECTION 8 DISP ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • RESISTORS When indicating parts by reference number, parts list may be different from the parts All resistors are in ohms. please include the board name. specified in the diagrams or the components METAL: metal-film resistor used on the set.
  • Page 37 LD IN SW LOADING MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < COIL > C274 1-161-494-00 CERAMIC 0.022uF C280 1-102-110-00 CERAMIC 220PF L350 1-410-507-11 INDUCTOR 6.8uH C281 1-164-159-21 CERAMIC 0.1uF L351 1-410-507-11 INDUCTOR 6.8uH C316 1-119-779-11 ELECT 220uF...
  • Page 38 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C436 1-136-177-00 FILM * CN304 1-568-841-11 SOCKET, CONNECTOR 25P C437 1-136-177-00 FILM CN305 1-568-838-11 SOCKET, CONNECTOR 21P C440 1-136-165-00 FILM 0.1uF CN351 1-506-468-11 PIN, CONNECTOR 3P (XB920) (XB920) C504 1-136-177-00 FILM...
  • Page 39 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks L305 1-410-322-11 INDUCTOR 3.3uH R382 1-259-418-81 CARBON 1/6W L306 1-410-521-11 INDUCTOR 100uH R405 1-249-462-11 CARBON 1/4W L312 1-410-781-11 INDUCTOR 33mH R406 1-249-462-11 CARBON 1/4W L313 1-410-781-11 INDUCTOR 33mH R407 1-249-586-81 CARBON...
  • Page 40 MAIN POWER POWER SW ROTARY SW Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R530 1-247-690-11 CARBON 1/4W F < CONNECTOR > R531 1-247-690-11 CARBON 1/4W F R532 1-247-714-11 CARBON 1.2K 1/4W F CN901 1-691-771-11 PLUG (MICRO CONNECTOR) 9P (XB920/XB920E:UK) CN902 1-691-767-11 PLUG (MICRO CONNECTOR) 5P...
  • Page 41 ROTARY SW SERVO Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < SWITCH > C173 1-163-021-91 CERAMIC CHIP 0.01uF C180 1-164-505-11 CERAMIC CHIP 2.2uF S550 1-771-312-11 SWITCH, ROTARY (FILTER) C191 1-164-505-11 CERAMIC CHIP 2.2uF C192 1-164-505-11 CERAMIC CHIP 2.2uF ************************************************************ C193...
  • Page 42 SERVO SLED SPINDLE TRANS Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R065 1-216-065-91 RES,CHIP 4.7K 1/10W R173 1-216-073-00 METAL CHIP 1/10W R066 1-216-101-00 METAL CHIP 150K 1/10W R174 1-216-073-00 METAL CHIP 1/10W R067 1-216-049-91 RES,CHIP 1/10W R175 1-216-073-00 METAL CHIP...
  • Page 43 TRANS Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < CONNECTOR > ACCESSORIES & PACKING MATERIALS ******************************* CN991 1-580-230-11 PIN, CONNECTOR (PC BOARD) 2P CN992 1-564-321-00 PIN, CONNECTOR 2P 1-452-873-11 MAGNET 1-473-720-11 REMOTE COMMANDER (RM-DX50) < COIL > 1-590-925-31 CORD, CONNECTION 3-810-765-21 MANUAL,COMMONNESS INSTRUCTION !L901...
  • Page 44 CDP-XB920/XB920E 98E1669-1 Printed in Japan ©1998.5 Sony Corporation Published by Quality Assurance Dept. Home A&V Products Company 9-922-851-11 (Shibaura) — 56 —...

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