Sony MHC-GX450 Service Manual
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Sony MHC-GX450 Service Manual

Mini hi-fi component system
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SERVICE MANUAL
Ver. 1.1 2005.08
• MHC-GX450 is composed of following models.
As for the service manual, it is issued for each component
model, then, please refer to them.
COMPONENT MODEL NAME
COMPACT DISC DECK RECEIVER SYSTEM
FRONT SPEAKER
SUB WOOFER
Sony Corporation
9-877-533-02
2005H16-1
Personal Audio Group
© 2005.08
Published by Sony Engineering Corporation
MHC-GX450
MHC-GX450
HCD-GX450
SS-RG444
SS-WG450
PARTS LIST
Part No.
Description
1-478-518-11
COMMANDER, STANDARD (RM-SC3)
1-754-094-12
ANTENNA, LOOP (AM)
1-754-243-11
ANTENNA (FM)
4-236-961-01
FOOT (FOR SPEAKER)(to Sereal No.8100000)
4-252-491-11
MANUAL, INSTRUCTION (ENGLISH)
4-252-491-21
MANUAL, INSTRUCTION (FRENCH)(Canadian model)
4-972-322-01
FOOT (Y)(FOR SPEAKER)(from Sereal No.8100001)
Remarks
(INCLUDING BATTERY COVER)
MINI Hi-Fi COMPONENT SYSTEM
US Model
Canadian Model

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  • Page 1 MHC-GX450 SERVICE MANUAL US Model Canadian Model Ver. 1.1 2005.08 • MHC-GX450 is composed of following models. As for the service manual, it is issued for each component model, then, please refer to them. COMPONENT MODEL NAME MHC-GX450 COMPACT DISC DECK RECEIVER SYSTEM...

  • Page 2: Section 6 Exploded Views

    4-245-183-61 COVER (SIDE-L) (US) 1-693-631-12 TUNER (FM/AM) 4-245-183-71 COVER (SIDE-L) (CND) 1-400-285-11 F-BEAD, E2515 MRT 4-252-196-21 DOOR, CD 4-245-184-61 COVER (SIDE-R) (US) 3-038-018-01 EMBLEM, SONY 4-245-184-71 COVER (SIDE-R) (CND) 0 PT902 4-244-849-61 COVER (TOP) (US) X-4956-292-1 TRANS ASSY, SUB 4-244-849-71 COVER (TOP) (CND)

  • Page 3: Front Panel Section

    HCD-GX450 6-2. FRONT PANEL SECTION not supplied not supplied not supplied not supplied supplied not supplied not supplied not supplied not supplied not supplied not supplied not supplied not supplied not supplied not supplied not supplied Ref. No. Part No. Description Remarks Ref.

  • Page 4: Main Board Section

    HCD-GX450 6-3. MAIN BOARD SECTION not supplied not supplied PT901 not supplied F904 F906 F905 F907 not supplied Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 0 F904 4-242-527-01 S-SCREW, ITC+4-8 R 1-576-537-11 FUSE, GLASS TUBE (DIA.5) (T8.0AL/125V) 0 F905 A-4750-756-A AMP BOARD, COMPLETE 1-576-537-11 FUSE, GLASS TUBE (DIA.5) (T8.0AL/125V)

  • Page 5: Cd Mechanism Deck Section -1 (Cdm74-F1Bd81)

    HCD-GX450 6-4. CD MECHANISM DECK SECTION -1 (CDM74-F1BD81) M741 CD mechanism deck section-2 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 4-218-253-21 SCREW (M2.6), +BTTP 4-243-820-01 GEAR (TABLE) 1-776-182-11 WIRE (FLAT TYPE) (5 CORE) 4-243-819-01 GEAR (GENEVA) 1-687-134-12 MOTOR (TB) BOARD 4-243-816-01 TRAY 4-243-815-01 TABLE (LOADING)

  • Page 6: Cd Mechanism Deck Section -2 (Cdm74-F1Bd81)

    HCD-GX450 6-5. CD MECHANISM DECK SECTION -2 (CDM74-F1BD81) RE701 M751 not supplied not supplied Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 1-687-135-12 DRIVER BOARD 4-231-189-01 PULLEY (B), CHUCKING 4-218-253-31 SCREW (M2.6), +BTTP X-4955-536-1 HOLDER (213) ASSY 1-687-669-12 SW BOARD 4-277-549-11 INSULATOR 4-244-034-01 BELT (LOADING)

  • Page 7: Electrical Parts List

    HCD-GX450 SECTION 7 6 STREAM LED ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • COILS When indicating parts by reference number, parts list may be different from the parts uH: µH please include the board name. specified in the diagrams or the components •...
  • Page 8 HCD-GX450 BD81A Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < TRANSISTOR > R494 1-249-421-11 CARBON 2.2K 1/4W F 0 R495 1-217-831-11 FUSIBLE 1/4W Q441 8-729-140-84 TRANSISTOR 2SC1841TP-PAFAEA 0 R496 Q442 8-729-140-84 TRANSISTOR 2SC1841TP-PAFAEA 1-212-881-11 FUSIBLE 1/4W Q481 8-729-119-79 TRANSISTOR...
  • Page 9 HCD-GX450 BD81A Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C195 1-164-360-11 CERAMIC CHIP 0.1uF R112 1-216-835-11 METAL CHIP 1/10W C196 1-164-360-11 CERAMIC CHIP 0.1uF R113 1-216-821-11 METAL CHIP 1/10W C201 1-128-995-21 ELECT CHIP 100uF R114 1-216-835-11 METAL CHIP 1/10W C203...
  • Page 10 HCD-GX450 BD81A CONNECT DRIVER GAME JACK H/P JACK MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < VIBRATOR > R702 1-247-807-31 CARBON 1/4W R711 1-249-417-11 CARBON 1/4W F X171 1-767-408-21 VIBRATOR, CRYSTAL (16.9MHz) R712 1-249-425-11 CARBON 4.7K 1/4W F ************************************************************...
  • Page 11 HCD-GX450 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C106 1-130-483-00 MYLAR 0.01uF C177 1-162-945-11 CERAMIC CHIP 22PF C107 1-126-964-11 ELECT 10uF 20.00% 50V C178 1-126-947-11 ELECT 47uF 20.00% 16V C108 1-164-816-11 CERAMIC CHIP 220PF 2.00% 50V C109 1-130-483-00 MYLAR...
  • Page 12 HCD-GX450 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C275 1-162-949-11 CERAMIC CHIP 47uF 5.00% 50V D308 6-500-522-21 DIODE 10EDB40-TB3 C301 1-130-495-00 MYLAR 0.1uF D309 6-500-522-21 DIODE 10EDB40-TB3 C302 1-130-495-00 MYLAR 0.1uF D310 6-500-522-21 DIODE 10EDB40-TB3 C303 1-130-495-00 MYLAR 0.1uF...
  • Page 13 HCD-GX450 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks Q313 8-729-120-28 TRANSISTOR 2SC3052F-T1-LF R154 1-216-833-11 METAL CHIP 1/10W Q314 6-550-289-01 TRANSISTOR 2SA1235F R155 1-216-829-11 METAL CHIP 4.7K 1/10W R156 1-216-853-11 METAL CHIP 470K 1/10W Q315 8-729-120-28 TRANSISTOR 2SC3052F-T1-LF Q321...

  • Page 14: Motor (Ld) Board

    HCD-GX450 MAIN MOTOR (LD) MOTOR (TB) Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R221 1-216-837-11 METAL CHIP 1/10W R344 1-216-837-11 METAL CHIP 1/10W R222 1-216-830-11 METAL CHIP 5.6K 1/10W R345 1-216-833-11 METAL CHIP 1/10W R223 1-216-845-11 METAL CHIP 100K 1/10W...
  • Page 15 HCD-GX450 PANEL Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks PANEL BOARD CN603 1-784-778-11 CONNECTOR, FFC 17P * CN604 1-564-708-11 PIN, CONNECTOR (SMALL TYPE) 6P *********** CN605 1-564-707-11 PIN, CONNECTOR (SMALL TYPE) 5P < CAPACITOR > CN608 1-818-282-11 PIN, CONNECTOR 3P C601...
  • Page 16 HCD-GX450 PANEL Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks Q611 8-729-027-55 TRANSISTOR DTC143EKA-T146 R653 1-216-817-11 METAL CHIP 1/10W Q612 8-729-027-55 TRANSISTOR DTC143EKA-T146 R654 1-216-819-11 METAL CHIP 1/10W Q613 8-729-027-55 TRANSISTOR DTC143EKA-T146 R655 1-216-821-11 METAL CHIP 1/10W Q614 8-729-027-55 TRANSISTOR...
  • Page 17 HCD-GX450 PANEL Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R718 1-216-837-11 METAL CHIP 1/10W R777 1-216-809-11 METAL CHIP 1/10W R719 1-216-827-11 METAL CHIP 3.3K 1/10W R778 1-216-809-11 METAL CHIP 1/10W R779 1-216-809-11 METAL CHIP 1/10W R720 1-218-867-11 METAL CHIP 6.8K...

  • Page 18: Sensor Board

    HCD-GX450 PANEL SENSOR SUB-TRANS SUB-WOOFER Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < VIBRATOR > C511 1-128-582-11 ELECT 10uF 20.00% 100V X601 1-760-252-12 VIBRATOR, CRYSTAL (32.768kHz) C512 1-136-497-81 FILM 0.1uF 5.00% 50V X602 1-795-004-21 VIBRATOR, CERAMIC (10MHz) C513 1-136-497-81 FILM 0.1uF...
  • Page 19 HCD-GX450 SUB-WOOFER TRANS VIDEO OUT Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R516 1-260-087-11 CARBON 1/2W < RESISTOR > R517 1-249-429-11 CARBON 1/4W 0 R902 R518 1-249-421-11 CARBON 2.2K 1/4W F 1-219-237-11 SOLID 3.3M 1/2W R519 1-249-421-11 CARBON 2.2K...

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