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SERVICE MANUAL
HCD-H551 is the tuner, deck, CD and
amplifier section in MHC-G55/551.
Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation.
"DOLBY" and the double-D symbol a are trademarks of
Dolby Laboratories Licensing Corporation.
CD player section
System
Compact disc and digital
audio system
Laser
Semiconductor (λ = 780nm)
Emission duration:
continuous
Laser output
Max 44.6 µW*
*This output is the value
measured at a distance of
200mm from the objective
lens surface on the Optical
Pick-up Block with 7mm
aperture.
Wavelength
780 – 790 nm
Frequency response
2 Hz – 20 kHz (±0.5 dB)
Signal-to-noise ratio
More than 90 dB
Dynamic range More than 90 dB
FM stereo, FM/AM superheterodyne tuner
FM tuner section
East European model:
65.0 – 78.0 MHz,
87.5 – 108.0 MHz
MICROFILM
HCD-H551
Photo: E model
Model Name Using Similar Mechanism
CD
CD Mechanism Type
SECTION
Base Unit Type
Optical Pick-up Type
TAPE
Model Name Using Similar Mechanism
DECK
Tape Transport Mechanism Type
SECTION

SPECIFICATIONS

Tourist model:
76.0 – 108.0 MHz
Other models:
87.5 – 108.0 MHz
Aerial
FM lead aerial
Aerial terminals 75 ohm unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
German, Italian models:
AM: 531 – 1,602 kHz (with
the interval set at 9 kHz)
AEP, UK, East European models:
MW: 531 – 1,602 kHz (with
the interval set at 9 kHz)
LW: 153 – 279 kHz (with
the interval set at 3 kHz)
Other models:
MW: 531 – 1,602 kHz (with
the interval set at 9 kHz)
530 – 1,710 kHz (with the
interval set at 10 kHz)
SW: 5.95 – 17.90 MHz
COMPACT DISC DECK RECEIVER
— 1 —
AEP Model
UK Model
E Model
Tourist Model
NEW
CDM28-5BD19
BU-5BD19
KSS-213BA/F-NP
HCD-H501
TCM-220WR2E
— Continue on next page —

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Summary of Contents for Sony HCD-H551

  • Page 1 SERVICE MANUAL AEP Model UK Model E Model Tourist Model HCD-H551 is the tuner, deck, CD and amplifier section in MHC-G55/551. Photo: E model Dolby noise reduction manufactured under license from Model Name Using Similar Mechanism Dolby Laboratories Licensing Corporation.
  • Page 2 Recording system 4-track 2-channel stereo Frequency response (DOLBY NR OFF) 40 – 13,000 Hz (±3 dB), using Sony TYPE I cassette 40 – 14,000 Hz (±3 dB), using Sony TYPE II cassette Wow and flutter ±0.15% W.Peak (IEC) 0.1% W.RMS (NAB) ±0.2% W.Peak (DIN)
  • Page 3 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. — 3 —...
  • Page 4: Table Of Contents

    TABLE OF CONTENTS Section Title Page Section Title Page SECTION 1. SERVICING NOTE ........ SECTION 7. EXPLODED VIEWS 7-1. Case Section ..............71 SECTION 2. GENERAL ............6 7-2. Back Panel Section ............72 7-3. Front Panel Section 1 ............73 7-4.
  • Page 5: Section 1. Servicing Note

    SECTION 1 SERVICING NOTE NOTES ON LASER DIODE EMISSION CHECK NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT 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 The laser diode in the optical pick-up block may suffer electrostatic block.
  • Page 6: Section 2. General

    SECTION 2 This section is extracted from instruction manual. GENERAL (AEP, UK, German, Italian, East European models) (E, Saudi Arabia, Hong Kong, Malaysia, Singapore, Taiwan, Tourist, Thailand, Indonesian models) 1 VIDEO IN jacks (22) 2 SPEAKER L/R connectors (4) 3 SUPER WOOFER jack (22) 4 ANTENNA terminals (4) 5 Voltage selector (Except Malaysia, Thailand models) (5)
  • Page 7 — 7 —...
  • Page 8: Front Panel

    SECTION 3 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. 4 Two screws 3-1. FRONT PANEL (+BVTP2.6X8) 1 Remove the connectors (Main board: CN402, CN702) (HP board: CN513) CN402 CN702 CN513 2 Two screws (+BVTT3X8) 5 Remove the claws (Three positions) 3 Two screws (+BVTT3X8)
  • Page 9: Hp Board, Jog Board And Panel Board

    3-3. HP BOARD, JOG BOARD AND PANEL BOARD * Note: It will be easy to remove if you push lightly from the hole of the JOG board with some screwdrivers or etc. Screw driver 3 Nut 4 Nut 1 Knob (VOL) * Note 2 Knob (JOG) * Note !™...
  • Page 10: Cd Block

    3-4. CD BLOCK 4 CD block (CD mechanism deck 1 Remove the connectors and CD chassis) (Main board: CN201) (Loading board: CN291) 3 Two screws (+BVTP3X8) 2 PC board holder CN291 CN201 3-5. CD MECHANISM DECK 1 Two screws (+BVTP3X8) 3 Remove the CD mechanism deck direction of arrow.
  • Page 11: Section 4. Mechanical Adjustments

    SECTION 4 SECTION 5 MECHANICAL ADJUSTMENTS ELECTRICAL ADJUSTMENTS Precaution DECK SECTION 0 dB=0.775V 1. Clean the following parts with a denatured alcohol-moistened swab: 1. Demagnetize the record/playback head with a head damagnetizer. record/playback heads pinch rollers 2. Do not use a magnetized screwdriver for the adjustments. erase head rubber belts 3.
  • Page 12 Tape Speed Adjustment (Deck A) 2. Turn the adjustment screw and check output peaks. If the peaks do not match for L-CH and R-CH, turn the adjustment screw so Note: Start the Tape Speed adjustment as below after setting the that outputs match within 1 dB of peak.
  • Page 13 Record Bias Adjustment (Deck B) Record Level Adjustment (Deck B) Procedure: Procedure: 1. Press FUNCTION button to Select VIDEO. 1. Press FUNCTION button to Select VIDEO. 2. Mode: record 2. Mode: record VIDEO IN 1) 315Hz VIDEO IN 50 mV (–23.8 dB) 2) 10kHz 315kHz 50mV (–23.8 dB) AF OSC...
  • Page 14: Tuner Section

    TUNER SECTION 0dB=1µV Note: As a front-end (FE1) is difficult to repair if faulty, replace it with new one. AM Tuned Level Adjustment Note: FM Tuned Level adjustment should be performed after this AM Tuned Level Adjustment. Setting: loop antenna Band: AM or MW (Supplied accessories) loop antenna...
  • Page 15 SW OSC Voltage Adjustment Adjustment Location: (E, EA, MY, SP, HK, TW, IA model) [TCB BOARD] — Component Side — Setting: Band: SW D1, CV2, T2 Procedure: SW OSC Voltage 1. Connect digital Voltmeter to diode D1 center lead and ground. Adjustment 2.
  • Page 16: Cd Section

    S Curve Check CD SECTION Procedure : oscilloscope Note: 1. CD Block is basically designed to operate without adjustment. BD board Therefore, check each item in order given. TP (FE) 2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. TP (VC) 3.
  • Page 17 E-F Balance Check Adjustment Location: oscilloscope [BD BOARD] — Component Side — BD board TP (TEO) RV101 TP (VC) IC101 Procedure: RV103 1. Connect test point TP701 (ADJ) on Main board to Ground with a lead wire. 2. Connect oscilloscpe to test point TP (TEO). 3.
  • Page 18: Circuit Boards Location

    SECTION 6 DIAGRAMS 6-1. CIRCUIT BOARDS LOCATION TRANSFORMER board TCB board PANEL board MAIN board HP board POWER AMP board JOG board Note: p A is including in MD board. BD board LOADING board MOTOR board LEAF SWITCH board MD board (including p A) —...
  • Page 37 6-18. IC PIN FUNCTIONS • IC501 GRAPHIC CONTROL (ASD042) Function Pin No. Pin Name 1 to 7 GR7-1 Fluorescent indicator tube grid signal output. – 9, 10 LED9, 10 LED drive signal output KEY SELECT Not used. (Open) VOL IN B Volume encoder signal input.
  • Page 38: Ic701 Master Control (Tmp87Cp64Yf)

    • IC701 MASTER CONTROL (TMP87CP64YF) Pin Name Pin No. Function – Ground XOUT X’tal (10 MHz). Reset signal input. RESET XOUT X’tal for clock (32.768 MHz). – Ground GND (test) Back up signal input. AC CUT Not used. (Connected to ground) SUPER WOOFER ON Mute signal output for tuner.
  • Page 39 Pin Name Pin No. Function AUB IN Audio bus in/output. (Not used) (Open) AUB OUT FOCUS SW Focus switching signal output. SQ-CLK Subcode Q data read clock output. SQ-DATA Subcode Q data input. X-LAT Latch signal digital signal processor. TEST Test land.
  • Page 40 Pin Name Pin No. Function NORM NORMAL/HIGH control signal output. Bias oscillation output. BIAS OFF REC MUTE Mute output. Dolby ON/OFF signal output. NR OFF REC/PB control signal output. Dolby switching signal output. PASS. AMP/DOLBY LINE MUTE ON Mute signal output for deck. Capstan motor control signal output.
  • Page 41: Case Section

    NOTE: • Items marked “*” are not stocked since they are • Abbreviation The components identified by G: German model seldom required for routine service. Some delay mark ! or dotted line with mark ! should be anticipated when ordering these items. IT: Italian model are critical for safety.
  • Page 42: Back Panel Section

    7-2. BACK PANEL SECTION (EXCEPT UK, E, JE, TH Model) (HK Model) (EA, SP, CNP1601 TW, IA Model) (UK Model) CNP1601 (E, JE, TH Model) CNP1601 (E, JE, TH Model) F1603 #1 ( p ) F1602 F1601 T1601 The components identified by mark ! or dotted line with mark ! (including p ) are critical for safety.
  • Page 43: Front Panel Section 1

    7-3. FRONT PANEL SECTION 1 not supplied Supplied with J501, J601 FL501 Supplied with S562 Supplied with S561 TCM-220WR2E Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-354-957-01 JOINT (LOCK LEVER) X-4946-727-1 HOLDER (A) ASSY, CASSETTE (EXCEPT IA) * 112 1-659-333-11 JOG BOARD X-4947-193-1 HOLDER (A) ASSY, CASSETTE (IA)
  • Page 44 4-978-742-01 HOLDER, MULTI LED X-4946-706-1 BUTTON (T/B) ASSY 4-978-839-01 BUTTON, MULTI 4-978-716-01 WINDOW, FL 4-978-837-01 BUTTON, POWER 4-978-851-01 INDICATOR, REC 4-962-708-11 EMBLEM (4-A), SONY X-4946-713-1 BUTTON (CD-PLAY) ASSY 4-978-745-11 PLATE, ORNAMENTAL, JOG 4-930-336-61 FOOT (FELT) X-4946-801-1 BUTTON (ENTER/NEXT)(E5) ASSY — 74 —...
  • Page 45: Cd Mechanism Section (Cdm28-5Bd19)

    7-5. CD MECHANISM SECTION (CDM28-5BD19) (including r B) not supplied M903 BU-5BD19 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 207 4-960-839-01 CAM 4-960-836-01 TABLE, DISC 4-960-838-03 BASE (MD) 4-960-835-01 HOLDER (M) 4-917-583-21 BRACKET, YOKE 1-452-719-11 MAGNET ASSY 4-933-134-01 SCREW (+PTPWH M2.6X6) 4-960-842-01 GEAR (P)
  • Page 46: Base Unit Section (Bu-5Bd19)

    7-6. BASE UNIT SECTION (BU-5BD19) M101 M102 (including r A) S101 The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. Ref. No. Part No. Description Remark Ref. No. Part No.
  • Page 47: Tc Mechanism Section 1 (Tcm-220Wr2E)

    7-7. TC MECHANISM SECTION 1 (TCM-220WR2E) (including p A) not supplied HP101 not supplied not supplied HRPE101 not supplied not supplied not supplied not supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-3370-643-1 PINCH LEVER (REV) ASSY X-3367-588-1 PINCH LEVER (FWD) ASSY 3-908-560-01 SPRING, AZIMUTH ADJUSTMENT 3-908-613-01 GEAR (S), REEL...
  • Page 48: Tc Mechanism Section 2 (Tcm-220Wr2E)

    7-8. TC MECHANISM SECTION 2 (TCM-220WR2E) p A : MOTOR board (Supplied with MD board) not supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-3370-171-1 FLYWHEEL (BR) ASSY 3-908-597-01 CAM (A) 3-908-600-01 LEVER (REV-B) 3-908-608-11 SCREW, STEP X-3367-590-2 ARM (A) ASSY, FR * 416 1-650-669-11 LEAF SWITCH BOARD...
  • Page 49: Section 8. Electrical Parts List

    SECTION 8 ELECTRICAL PARTS LIST Note: • Due to standardization, replacements in the parts • CAPACITORS The components identified by list may be different from the parts specified in the uF : µ F mark ! or dotted line with mark ! diagrams or the components used on the set.
  • Page 50 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < SWITCH > R114 1-216-101-00 METAL CHIP 150K 1/10W R115 1-216-101-00 METAL CHIP 150K 1/10W S101 1-572-085-11 SWITCH, LEAF (LIMIT) R116 1-216-061-00 METAL CHIP 3.3K 1/10W R117 1-216-069-00 METAL CHIP 6.8K 1/10W <...
  • Page 51 LOADING MAIN LEAF SWITCH Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-659-333-11 JOG BOARD S1002 1-692-832-11 SWITCH, PUSH (1 KEY)(B PLAY) S1003 1-572-248-11 SWITCH, LEAF (A HALF) ********* S1004 1-571-281-21 SWITCH, LEAF (A CrO2) < CAPACITOR > S1005 1-571-281-21 SWITCH, LEAF (REC A) S1006...
  • Page 52 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C209 1-126-952-11 ELECT 1000uF C908 1-130-479-00 MYLAR 0.0047uF C251 1-126-961-11 ELECT 2.2uF C909 1-130-474-00 MYLAR 0.0018uF C910 1-126-964-11 ELECT 10uF C252 1-162-600-11 CERAMIC 0.0047uF C911 1-126-964-11 ELECT 10uF C912 1-136-165-00 FILM...
  • Page 53 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C1022 1-126-968-11 ELECT 100uF D1001 8-719-024-99 DIODE 11ES2-NTA2B (EXCEPT IA) C1023 1-126-968-11 ELECT 100uF C1025 1-126-925-11 ELECT 470uF D1002 8-719-200-82 DIODE 11ES2 (IA) C1026 1-126-925-11 ELECT 470uF D1002 8-719-024-99 DIODE 11ES2-NTA2B (EXCEPT IA) D1003...
  • Page 54 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < FUSE > Q902 8-729-119-78 TRANSISTOR 2SC403SP-51 Q951 8-729-119-78 TRANSISTOR 2SC403SP-51 ! F1601 1-532-504-31 FUSE,TIME-LAG (4.0A 250V) Q952 8-729-119-78 TRANSISTOR 2SC403SP-51 ! F1602 1-532-504-31 FUSE,TIME-LAG (4.0A 250V) Q953 8-729-141-26 TRANSISTOR 2SC3622A-LK Q954...
  • Page 55 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R407 1-249-437-11 CARBON 1/4W R740 1-249-427-11 CARBON 6.8K 1/4W R408 1-249-437-11 CARBON 1/4W (G,IT) R409 1-249-429-11 CARBON 1/4W R740 1-249-435-11 CARBON 1/4W R410 1-247-882-11 CARBON 130K 1/4W (EE) R411 1-247-866-11 CARBON...
  • Page 56 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R917 1-247-903-00 CARBON 1/4W R1238 1-249-419-11 CARBON 1.5K 1/4W R918 1-249-431-11 CARBON 1/4W R1240 1-249-438-11 CARBON 1/4W R920 1-249-441-11 CARBON 100K 1/4W R1241 1-249-397-11 CARBON 1/4W R930 1-249-429-11 CARBON 1/4W R931...
  • Page 57 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark IC611 8-759-710-59 IC NJM4580D-D A-2007-435-A MD BOARD, COMPLETE ******************* < COIL > (including MOTOR board) L331 1-410-780-11 INDUCTOR 27mH < CAPACITOR > L431 1-410-780-11 INDUCTOR 27mH C301 1-162-289-31 CERAMIC 390PF <...
  • Page 58 PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark RV311 1-238-598-11 RES, ADJ, CARBON 2.2K D589 8-719-032-87 DIODE SEL5420S-TP (·)(DECK A) RV341 1-238-551-11 RES, ADJ, CARBON 220K D590 8-719-032-87 DIODE SEL5420S-TP (ª)(DECK A) RV401 1-238-598-11 RES, ADJ, CARBON 2.2K D601 8-719-033-06 DIODE SEL5920A (CD) RV411...
  • Page 59 PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R526 1-249-419-11 CARBON 1.5K 1/4W R586 1-249-407-11 CARBON 1/4W R527 1-249-421-11 CARBON 2.2K 1/4W R587 1-247-807-31 CARBON 1/4W R528 1-249-423-11 CARBON 3.3K 1/4W R588 1-247-807-31 CARBON 1/4W R529 1-249-427-11 CARBON 6.8K...
  • Page 60 PANEL POWER AMP Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark S537 1-554-303-21 SWITCH, TACTILE (DOLBY NR) < DIODE > S538 1-554-303-21 SWITCH, TACTILE ())(DECK A) S539 1-554-303-21 SWITCH, TACTILE (p)(DECK A) D1201 8-719-987-63 DIODE 1N4148M S540 1-554-303-21 SWITCH, TACTILE (0)(DECK A) D1202...
  • Page 61 POWER AMP Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-163-077-00 CERAMIC CHIP 0.1uF R1268 1-249-397-11 CARBON 1/4W 1-126-967-11 ELECT 47uF R1269 1-249-397-11 CARBON 1/4W 1-163-031-11 CERAMIC CHIP 0.01uF 1-124-902-00 ELECT 0.47uF ************************************************************** 1-124-903-11 ELECT 1.0uF A-4303-514-A TCB BOARD, COMPLETE (AEP,UK) 1-124-903-11 ELECT 1.0uF...
  • Page 62 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < IC > < TRANSISTOR > IC21 8-759-288-54 IC LC72130 8-729-201-27 TRANSISTOR 2SC2715Y IC41 8-759-176-03 IC LA1835 8-729-201-27 TRANSISTOR 2SC2715Y 8-729-201-27 TRANSISTOR 2SC2715Y < IFT > 8-729-201-27 TRANSISTOR 2SC2715Y 8-729-424-08 TRANSISTOR UN2111 IFT41 1-409-636-11 TRANSFORMER, IF (CERAMIC FILTER)
  • Page 63 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-216-042-00 METAL CHIP 1/10W 1-163-038-91 CERAMIC CHIP 100000PF 1-216-013-00 METAL CHIP 1/10W 1-249-423-11 CARBON 3.3K 1/4W 1-163-038-91 CERAMIC CHIP 100000PF 1-216-073-00 METAL CHIP 1/10W 1-136-162-00 METALIZED FILM 0.056uF 1-216-097-91 METAL CHIP 100K 1/10W...
  • Page 64 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-126-162-11 ELECT 3.3uF 1-410-119-11 MICRO INDUCTOR (EL TYPE) 1mH 1-126-933-11 ELECT 100uF < FILTER > 1-162-306-11 CERAMIC 10000PF 1-162-306-11 CERAMIC 10000PF LPF41 1-239-845-11 FILTER, LOW PASS 1-126-967-11 ELECT 47uF LPF42 1-239-845-11 FILTER, LOW PASS...
  • Page 65 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-162-306-11 CERAMIC 10000PF 1-216-214-00 METAL CHIP 4.7K 1/8W 1-162-306-11 CERAMIC 10000PF 1-216-025-91 METAL CHIP 1/10W 1-216-073-00 METAL CHIP 1/10W 1-101-004-00 CERAMIC 0.01uF 1-216-089-91 METAL CHIP 1/10W 1-162-306-11 CERAMIC 10000PF 1-249-429-11 CARBON 1/4W...
  • Page 66 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-126-964-11 ELECT 10uF 1-249-411-11 CARBON 1/4W 1-249-411-11 CARBON 1/4W < FILTER > 1-247-863-91 CARBON 1/4W 1-249-429-11 CARBON 1/4W 1-567-389-11 FILTER, CERAMIC 1-249-437-11 CARBON 1/4W 1-567-389-11 FILTER, CERAMIC 1-249-399-11 CARBON 1/4W <...
  • Page 67 TRANSFORMER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-659-332-11 TRANSFORMER BOARD FL501 1-517-489-11 INDICATOR TUBE, FLUORESCENT HP101 1-500-093-11 HEAD, MAGNETIC (PLAYBACK) ******************* HRPE101 1-500-094-11 HEAD, MAGNETIC (REC/PB/ERASE) X-3371-223-1 MOTOR ASSY (CAPSTAN) < CONNECTOR > A-2004-410-A MOTOR ASSY (TRIGGER) * CN1600 1-564-525-11 PLUG, CONNECTOR 10P M101 X-4917-523-4 MOTOR ASSY (SPINDLE)
  • Page 68 HCD-H551 English Sony Corporation 96C0972-1 Printed in Japan Consumer A&V Products Company © 1996. 3 9-960-534-11 Home A&V Products Div. Published by Home A&V Products Div. Quality Engineering Dept. — 98 —...

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