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CX-LDB10/LDB20
SERVICE MANUAL
Ver. 1.0 2005.03
CX-LDB10/LDB20 are the Amplifier, CD player,
Tape Deck and Tuner section in XR-DB10/DB20.
Amplifier section
CX-LDB20
DIN power output (rated): 35 + 35 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
40 + 40 W
(6 ohms at 1 kHz, 10%
THD)
Music power output (reference):
62 + 62 W
Inputs
AUDIO IN:
Sensitivity 700 mV,
impedance 47 kilohms
Outputs
PHONES:
Accepts headphones with
an impedance of 8 ohms or
more
SPEAKER:
Accepts impedance of 6 to
16 ohms.
CX-LDB10
DIN power output (rated): 20 + 20 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
22.5 + 22.5 W
(6 ohms at 1 kHz, 10%
THD)
Music power output (reference):
38 + 38 W
Sony Corporation
9-879-549-01
Personal Audio Group
2005C1678-1
Published by Sony Engineering Corporation
© 2005.03
Photo : CX-LDB20
Model Name Using Similar Mechanism
CD
Base Unit Name
Section
Optical Pick-up Name
Tape deck
Model Name Using Similar Mechanism
Section
Tape Transport Mechanism Type
SPECIFICATIONS
Inputs
AUDIO IN:
Sensitivity 700 mV,
impedance 47 kilohms
Outputs
PHONES:
Accepts headphones with
an impedance of 8 ohms or
more
SPEAKER:
Accepts impedance of 6 to
16 ohms.
CD player section
Laser Diode Properties
Emission duration:
continuous
Laser Output*: Less than
44.6 µW
* This output is the value measurement at a distance of
200 mm from the objective lens surface on the
Optical Pick-up Block with 7 mm aperture)
Frequency response
20 Hz – 20 kHz
Tape deck section
Recording system
4-track 2-channel, stereo
Frequency response
50 – 13,000 Hz (±3 dB),
using Sony TYPE I
cassettes
MICRO HI-FI COMPONENT SYSTEM
AEP Model
E Model
CX-LDB10/LDB20
Australian Model
HCD-NE5
BU-K7BD81B
KSM-213EDP/C2NP
HCD-NE5
CMAL5Z220A
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
87.5 – 108.0 MHz
Antenna
FM lead antenna
Antenna terminals
75 ohms unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Pan-American model:
530 – 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 – 1,710 kHz
(with the tuning interval
set at 9 kHz)
European model:
531 – 1,602 kHz
(with the tuning interval
set at 9 kHz)
Other models:
530 – 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 – 1,602 kHz
(with the tuning interval
set at 9 kHz)
Antenna
AM loop antenna, external
antenna terminal
Intermediate frequency
450 kHz
— Continued on next page —
CX-LDB10
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Summary of Contents for Sony CX-LDB10
- Page 1 SERVICE MANUAL AEP Model E Model Ver. 1.0 2005.03 CX-LDB10/LDB20 Australian Model CX-LDB10 CX-LDB10/LDB20 are the Amplifier, CD player, Tape Deck and Tuner section in XR-DB10/DB20. Photo : CX-LDB20 Model Name Using Similar Mechanism HCD-NE5 Base Unit Name BU-K7BD81B Section...
- Page 2 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.
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Page 3: Table Of Contents
CX-LDB10/LDB20 TABLE OF CONTENTS SERVICING NOTES 7-3. Printed Wiring Board — CD Board — ......18 ..........4 7-4. Schematic Diagram — CD Board — ......19 7-5. Printed Wiring Board — MAIN Section (1/2) — ..20 GENERAL ..............5 7-6. -
Page 4: Servicing Notes
CX-LDB10/LDB20 SECTION 1 SERVICING NOTES MODEL IDENTIFICATION NOTES ON HANDLING THE OPTICAL PICK-UP – Back Panel – BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. -
Page 5: General
CX-LDB10/LDB20 SECTION 2 GENERAL This section is extracted from instruction manual. List of button locations and reference pages How to use this page Illustration number Use this page to find the location of buttons and other DISPLAY 9 (14, 20) parts of the system that are mentioned in the text. - Page 6 CX-LDB10/LDB20 Remote control ALPHABETICAL ORDER BUTTON DESCRIPTIONS ?/1 (power) 1 (7, 18, 19, 25) A – O P – Z m/M (rewind/fast forward) CD qh (9, 11) PLAY MODE qk (9, 11, 24) 7 (10, 15) CLEAR qd (11) REPEAT 4 (10)
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Page 7: Disassembly
CX-LDB10/LDB20 SECTION 3 DISASSEMBLY • This set can be disassembled in the order shown below. 3-1. DISASSEMBLY FLOW 3-2. REAR CABINET 3-8. LID (CASSETTE) (Page 7) (Page 10) 3-3. TOP PANEL ASSY, FRONT PANEL ASSY (Page 8) 3-4. BASE UNIT 3-5. -
Page 8: Top Panel Assy, Front Panel Assy
CX-LDB10/LDB20 3-3. TOP PANEL ASSY, FRONT PANEL ASSY 3 top panel assy 2 wire (flat type) (27core) (CN004) 1 connector qd connector (2P) (6P) qa screw (BVTP3 × 8) 7 wire (flat type) 4 wire (flat type) (17core) (CN003) qj front panel assy... -
Page 9: Mechanical Deck (Cmal5Z220A)
CX-LDB10/LDB20 3-5. MECHANICAL DECK (CMAL5Z220A) 1 wire (flat type) (7core) 5 plate (shield cassette) 4 two earth wires 2 four screws 6 mechanical deck (CMAL5Z220A) (BVTP3 × 8) 3 coating clip 3-6. CONTROL BOARD 1 knob (VOL) 8 CONTROL board 2 three screws (BVTP2.6 ×... -
Page 10: Main Board, Power Transformer
CX-LDB10/LDB20 3-7. MAIN BOARD, POWER TRANSFORMER 5 two tapping screws (B3) 8 holder (pwb PT) 3 two sumitite screws 7 two claws (B3) 4 MAIN board 9 four screws 2 screw (BVTP3 × 8) 6 shield cover q; power transformer... -
Page 11: Test Mode
CX-LDB10/LDB20 SECTION 4 TEST MODE COLD RESET CD Repeat 5 Times Limit Release Mode • The cold reset clears all data including preset data stored in Procedure: 1. Press the ?/1 button to turn the set ON. the RAM to initial conditions. Execute this mode when returning the set to the customers. -
Page 12: Mechanical Adjustments
CX-LDB10/LDB20 SECTION 5 SECTION 6 MECHANICAL ADJUSTMENTS ELECTRICAL ADJUSTMENTS TAPE MECHANISM DECK SECTION DECK SECTION 0 dB = 0.775 V Precaution 1. Clean the following parts with a denatured alcohol-moistened Precaution swab: 1. Demagnetize the record/playback head with a head record/playback heads pinch rollers demagnetizer. - Page 13 CX-LDB10/LDB20 3. Mode: Playback CD SECTION MAIN board Note: SPEAKER terminal (J302) test tape 1. CD Block is basically constructed to operate without L-CH P-4-A100 oscilloscope (10 kHz, – 10 dB) adjustment. L-CH 2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
- Page 14 CX-LDB10/LDB20 Checking Location: – CD BOARD (Conductor Side) – TP (VC) (RFACO)
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Page 15: Diagrams
CX-LDB10/LDB20 SECTION 7 DIAGRAMS • 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.) For Schematic Diagrams. For Printed Wiring Boards. Note: Note: •... -
Page 16: Block Diagram - Cd Section
CX-LDB10/LDB20 7-1. BLOCK DIAGRAM — CD SECTION — FILTER XTSL CD DSP XTAO IC101 (1/2) CLOCK X171 51 53 50 52 DETECTOR XTAI D +3.3V GENERATOR 16.9344MHz XTACN RFACO RFACI AOUT1 RFAC ASYMMETRY MAIN SUMMING DIGITAL PLL CORRECTOR DEMODULATOR Section... -
Page 17: Block Diagram - Main Section
CX-LDB10/LDB20 7-2. BLOCK DIAGRAM — MAIN SECTION — LDB20 J702 LDB10 POWER RELAY AUDIO IN 19 AUX-L RY351 IC301 R-CH Q356 OUT-L +INA OUTA J701 J701 PHONES PHONES CD SERVO 21 CD-L Section R-CH +INB OUTB FM/AM TUNER PACK FM 75Ω... -
Page 18: Printed Wiring Board - Cd Board
CX-LDB10/LDB20 • See page 15 for Circuit Boards Location. 7-3. PRINTED WIRING BOARD — CD BOARD — :Uses unleaded solder. CD BOARD (COMPONENT SIDE) M101 (SPINDLE) CD BOARD (CONDUCTOR SIDE) IC303 C302 S101 (LIMIT) C305 C303 C255 R404 C260 R313... -
Page 19: Schematic Diagram - Cd Board
CX-LDB10/LDB20 • See page 32, 33 and 34 for IC Block Diagrams. • See page 31 for Waveforms. 7-4. SCHEMATIC DIAGRAM — CD BOARD — C131 100p TP423 IOP1 C142 1500p C134 C125 R131 R121 R143 C151 TP10 R203 C143 3.3k... -
Page 20: Printed Wiring Board - Main Section (1/2)
CX-LDB10/LDB20 • See page 15 for Circuit Boards Location. 7-5. PRINTED WIRING BOARD — MAIN SECTION (1/2) — :Uses unleaded solder. • Semiconductor Location MAIN BOARD (SIDE A) Ref. No. Location D010 D255 Q006 Q009 Q010 Q011 Q018 Q255 Q257... -
Page 21: Printed Wiring Board - Main Section (2/2)
CX-LDB10/LDB20 • See page 15 for Circuit Boards Location. 7-6. PRINTED WIRING BOARD — MAIN SECTION (2/2) — :Uses unleaded solder. • Semiconductor CONTROL Location BOARD BOARD Ref. No. Location MAIN BOARD (SIDE B) CN201 CN401 D002 (Page 18) (Page 26) -
Page 22: Schematic Diagram - Main Section (1/3)
CX-LDB10/LDB20 • See page 35 for IC Block Diagram. 7-7. SCHEMATIC DIAGRAM — MAIN SECTION (1/3) — MAIN BOARD (1/3) *2 C131, C132 220p : EXCEPT MX 0.002 : MX CN101 AUX BOARD W702 (Page 30) CN102 IC B/D IC101... -
Page 23: Schematic Diagram - Main Section (2/3)
CX-LDB10/LDB20 7-8. SCHEMATIC DIAGRAM — MAIN SECTION (2/3) — REG BOARD IC003 +10V REG MAIN BOARD (2/3) LDB20 LDB10 LDB20 * STK433-060 : LDB20 1SS355TE-17 STK433-040 : LDB10 LDB10 LDB20 2SC4154TP-1EF RELAY SWITCH IC301 0.4 -0.5 4.8 -0.5 4.8 30.5 9.2 8.6 8.6 15.7 30.5 -30.4 -30.5... -
Page 24: Schematic Diagram - Main Section (3/3)
CX-LDB10/LDB20 7-9. SCHEMATIC DIAGRAM — MAIN SECTION (3/3) — MAIN BOARD (3/3) MAIN BOARD MAIN BOARD (2/3) (1/3) (Page 23) (Page 22) 9 10 11 12 13 24 25 26 27 28 29 30 31 32 33 34 37 38 BIAS OSC +3.9V... -
Page 25: Printed Wiring Board - Control Board (1/2)
CX-LDB10/LDB20 • See page 15 for Circuit Boards Location. 7-10. PRINTED WIRING BOARD — CONTROL BOARD (1/2) — :Uses unleaded solder. CONTROL BOARD (SIDE A) • Semiconductor Location Ref. No. Location D410 D411 D412 D413 D414 D415 D416 Q402 Q404... -
Page 26: Printed Wiring Board - Control Board (2/2)
CX-LDB10/LDB20 • See page 15 for Circuit Boards Location. 7-11. PRINTED WIRING BOARD — CONTROL BOARD (2/2) — :Uses unleaded solder. • Semiconductor CONTROL BOARD (SIDE B) Location Ref. No. Location D403 D404 CD DOOR (FLUORESCENT INDICATOR TUBE) D405 D406... -
Page 27: Schematic Diagram - Control Board
CX-LDB10/LDB20 • See page 35 for IC Block Diagram. • See page 31 for Waveforms. 7-12. SCHEMATIC DIAGRAM — CONTROL BOARD — CONTROL BOARD EXCEPT AEP IC402 CD DOOR REMOTE OPEN/CLOSE CONTROL RECEIVER MAIN BOARD CN003 (Page 24) UDZSTE175.1B LDB20... -
Page 28: Printed Wiring Board - Power Board
CX-LDB10/LDB20 • See page 15 for Circuit Boards Location. 7-13. PRINTED WIRING BOARD — POWER BOARD — :Uses unleaded solder. POWER (1) BOARD (SIDE B) POWER (1) BOARD (SIDE A) RY901 POWER(2) BOARD (SIDE A) POWER(2) BOARD (SIDE B) T901... -
Page 29: Schematic Diagram - Power Board
CX-LDB10/LDB20 7-14. SCHEMATIC DIAGRAM — POWER BOARD — POWER BOARD POWER (2) BOARD POWER (1) BOARD AEP, RU, E51, SP, MY AR, AUS, KR LDB10 LDB20 Q901-Q904 AC DET 15.5 15.5 MAIN BOARD CN001 (Page 24) E51, SP, MY : NOT REPLACEABLE... -
Page 30: Printed Wiring Board - Aux Section
CX-LDB10/LDB20 • See page 15 for Circuit Boards Location. 7-15. PRINTED WIRING BOARD — AUX SECTION — 7-16. SCHEMATIC DIAGRAM — AUX SECTION — :Uses unleaded solder. AUX BOARD HEADPHONE BOARD (SIDE A) HEADPHONE BOARD (SIDE B) J702 AUDIO IN CN701 UDZSTE-173.9B... - Page 31 CX-LDB10/LDB20 • Waveforms – CD Board – – CONTROL Board – IC401 0 (I-XT1) IC101 yd (LRCK) 4.4 Vp-p 3.7 Vp-p 22.8 µ s 30.5 µ s 1 V/DIV, 10 µ s/DIV 2 V/DIV, 10 µ s/DIV IC401 qd (XIN-16 MHz) IC101 yh (BCK) 2.9 Vp-p...
- Page 32 CX-LDB10/LDB20 • IC Block Diagrams – CD Board – IC101 CXD3059AR 119 118 115 114 112 111 110 109 103 102 101 100 CPU INTERFACE SERVO INTERFACE 90 RMUT 89 IOVDD0 88 NC 87 AVDD2 86 AOUT2 COVERTER 85 VREFR...
- Page 33 CX-LDB10/LDB20 IC251 BA5947FM-E2 MUTING + – INTERFACE LEVEL SHIFT INTERFACE INTERFACE VREF IC303 BH15FB1WG THERMAL PROTECTION OVER CURRENT PROTECTION VOLTAGE CONTROL REFERENCE BLOCK...
- Page 34 CX-LDB10/LDB20 IC301 TC94A34FG-002 Timing Generator VDDP PO5/AD5 /RESET PO6/AD6 STANDBY PO7AD7 /MICS /MILP MIDIO AD10 /MICK VDDT /MIACK/ SRMSTB AD16 VDDT VDDM PO8/AD11 SDO0 PO9/AD12 /CCE/ PO10/ BCKO AD13 BUCK/ PO11/ LRCKO AD14 SDO3/ SDI0 Interrupt Timer Control Switch General...
- Page 35 CX-LDB10/LDB20 – MAIN Board – IC101 BD3881FV BASS BASS VOLUME TREBLE LOGIC CONTROL VOLUME TREBLE – CONTROL Board – IC403 PST3629NR...
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Page 36: Exploded Views
CX-LDB10/LDB20 SECTION 8 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Abbreviation The components identified by mark 0 or may have some difference from the original : Australian model dotted line with mark 0 are critical for safety. -
Page 37: Front Panel Section
CX-LDB10/LDB20 8-2. FRONT PANEL SECTION supplied supplied supplied supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 2-548-352-01 LID (CASSETTE) (LDB20) A-1113-012-A CONTROL BOARD, COMPLETE (LDB20: RU) 2-548-352-21 LID (CASSETTE) (LDB10) A-1113-022-A CONTROL BOARD, COMPLETE (LDB10: RU) -
Page 38: Chassis Section
CX-LDB10/LDB20 8-3. CHASSIS SECTION supplied supplied supplied T902 supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-1095-588-A MAIN BOARD, COMPLETE (LDB20: AEP) A-1109-035-A POWER (1) BOARD, COMPLETE (LDB10: MX) A-1095-625-A MAIN BOARD, COMPLETE (LDB10: AEP) -
Page 39: Top Panel Assy
CX-LDB10/LDB20 8-4. TOP PANEL ASSY S820 not supplied S101 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-252-828-01 SCREW (B2.6), (+) PWH TAPPING 4-246-195-21 LID, CD A-1119-080-A CD BOARD, COMPLETE (MX) 4-246-191-11 PLATE, MAGNET A-4751-434-A CD BOARD, COMPLETE (EXCEPT MX) -
Page 40: Electrical Parts List
CX-LDB10/LDB20 SECTION 9 ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • COILS When indicating parts by reference number, uH: µH parts list may be different from the parts please include the board name. specified in the diagrams or the components •... - Page 41 CX-LDB10/LDB20 CONTROL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C303 1-164-360-11 CERAMIC CHIP 0.1uF R172 1-216-857-11 METAL CHIP 1/10W C305 1-126-246-11 ELECT CHIP 220uF R173 1-216-295-91 SHORT CHIP C306 1-164-360-11 CERAMIC CHIP 0.1uF C307 1-164-360-11 CERAMIC CHIP 0.1uF...
- Page 42 CX-LDB10/LDB20 CONTROL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C410 1-162-964-11 CERAMIC CHIP 0.001uF < FILTER > C411 1-124-584-00 ELECT 100uF FL401 1-519-819-11 INDICATOR TUBE, FLUORESCENT C412 1-162-970-11 CERAMIC CHIP 0.01uF C413 1-162-970-11 CERAMIC CHIP 0.01uF...
- Page 43 CX-LDB10/LDB20 CONTROL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R419 1-216-813-11 METAL CHIP 1/10W R475 1-216-845-11 METAL CHIP 100K 1/10W (RU) R476 1-216-837-11 METAL CHIP 1/10W R419 1-216-817-11 METAL CHIP 1/10W R477 1-216-809-11 METAL CHIP...
- Page 44 CX-LDB10/LDB20 CONTROL HEADPHONE Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R542 1-216-809-11 METAL CHIP 1/10W < CONNECTOR > R543 1-216-809-11 METAL CHIP 1/10W * CN701 1-564-521-11 PLUG, CONNECTOR 6P R544 1-216-809-11 METAL CHIP 1/10W R545...
- Page 45 CX-LDB10/LDB20 HEADPHONE MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R719 1-216-864-11 SHORT CHIP 0 (LDB10) C038 1-165-176-11 CERAMIC CHIP 0.047uF R720 1-216-864-11 SHORT CHIP 0 (LDB10) C041 1-165-176-11 CERAMIC CHIP 0.047uF R721 1-216-864-11 SHORT CHIP...
- Page 46 CX-LDB10/LDB20 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C354 1-126-968-11 ELECT 100uF C141 1-162-970-11 CERAMIC CHIP 0.01uF C355 1-162-974-11 CERAMIC CHIP 0.01uF C142 1-162-970-11 CERAMIC CHIP 0.01uF C356 1-126-968-11 ELECT 100uF C143 1-162-968-11 CERAMIC CHIP 0.0047uF 10%...
- Page 47 CX-LDB10/LDB20 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Q202 8-729-927-88 TRANSISTOR 2SA1579T106-RR D359 8-719-988-61 DIODE 1SS355TE-17 Q252 8-729-045-62 TRANSISTOR 2SK2158-T2B D601 8-719-988-61 DIODE 1SS355TE-17 Q253 8-729-027-31 TRANSISTOR DTA124EKA-T146 D602 8-719-000-08 DIODE MC2838 Q254 8-729-027-31 TRANSISTOR...
- Page 48 CX-LDB10/LDB20 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R036 1-216-829-11 METAL CHIP 4.7K 1/10W R150 1-216-833-11 METAL CHIP 1/10W R037 1-216-829-11 METAL CHIP 4.7K 1/10W R153 1-216-829-11 METAL CHIP 4.7K 1/10W R154 1-216-829-11 METAL CHIP 4.7K...
- Page 49 CX-LDB10/LDB20 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R255 1-216-829-11 METAL CHIP 4.7K 1/10W R333 1-216-801-11 METAL CHIP 1/10W R256 1-216-829-11 METAL CHIP 4.7K 1/10W R334 1-216-801-11 METAL CHIP 1/10W R257 1-216-829-11 METAL CHIP 4.7K...
- Page 50 CX-LDB10/LDB20 MAIN POWER (1) POWER (2) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R613 1-216-817-11 METAL CHIP 1/10W A-1095-601-A POWER (2) BOARD, COMPLETE (LDB20) (EXCEPT MX) A-1095-629-A POWER (2) BOARD, COMPLETE (LDB10) R613 1-216-821-11 METAL CHIP...
- Page 51 CX-LDB10/LDB20 POWER (2) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R919 1-216-817-11 METAL CHIP 1/10W 0 T902 (LDB20) 1-443-674-11 TRANSFORMER, POWER (LDB20: AEP, RU) R919 1-216-864-11 SHORT CHIP 0 (LDB10) 0 T902 1-443-675-11 TRANSFORMER, POWER (LDB10: AEP, RU)
- Page 52 CX-LDB10/LDB20 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision...