Sony HCD-GRX2 Service Manual

Text of Sony HCD-GRX2 User Guide:

• Sony HCD-GRX2, — 13 — IC03 VR02 VR01 R07 IC01 CN12 Focus Gain Focus Bias RF Level CD SECTION Note: 1. CD Block is basically constructed to operate without adjustment. Therefore, check each item in order given. 2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. 3. Use an oscilloscope with more than 10MΩ impedance. 4. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks. 5. Adjust the focus bias adjustment when optical block is replaced. Focus Bias Adjustment RF Level Check Procedure : 1. Conne

• Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks — 63 — * 1-670-387-11 DISK BOARD ********** < RESISTOR > R630 1-247-841-11 CARBON 2.7K 5% 1/4W R631 1-249-424-11 CARBON 3.9K 5% 1/4W F R632 1-249-427-11 CARBON 6.8K 5% 1/4W F R633 1-249-431-11 CARBON 15K 5% 1/4W R634 1-249-436-11 CARBON 39K 5% 1/4W < SWITCH > S619 1-572-674-11 SWITCH, P

• Sony HCD-GRX2, ––––––––––– –––––––––––––––––––––– 1-126-925-11 ELECT 470uF 20% 10V 1-162-201-31 CERAMIC 12PF 5% 50V ––––––––––– –––––––––––––––––––––– 1-162-294-31 CERAMIC 0.001uF 10% 50V ––––––––––– –––––––––––––––––––––– 1-136-154-00 FILM 0.012uF 5% 50V 1-162-306-11 CERAMIC 0.01uF 20% 16V 1-126-927-11 ELECT 2200uF 20% 10V 1-162-294-31 CERAMIC 0.001uF 10% 50V 1-102-942-00 CERAMIC 5PF 0.5PF 50V 1-102-94

• Sony HCD-GRX2, — 57 — 6-4. CASSETTE MECHANISM DECK SECTION 160 161 160 158 157 161 154 163 153 154 152 153 152 151 SW202 HE901 HRP901 not supplied not supplied not supplied not supplied not supplied not supplied not supplied not supplied not supplied HP901 SW203 SW204 M901 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 151 9-980-286-01 CAP SCREW 2 × 7.5 152 9-980-288-01 A SCREW 2 × 7 (AZIMUTH) 153 9-980-287-01 B SCREW 2 × 3 154 9-980-276-01 PINCH ROLLER ARM ASSY 157 9-980-279-01 SCREW M COLLAR 158 9-980-278-01 MOTOR RUBBER 160 9-980-277-01 BELT (W)

• Sony HCD-GRX2, — 60 — 6-7. BASE UNIT SECTION (KSM-213BCM) Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 301 4-992-164-01 BASE, KSM MECHANICAL 302 4-992-165-01 DAMPER (GREEN) 303 4-992-166-01 DAMPER (RED) 304 4-992-167-01 SPRING, MECHANICAL BASE 305 2-626-907-01 GEAR (A) (S) 306 2-626-908-01 SHAFT, SLED 307 2-627-003-02 GEAR (B) ! 308 8-848-379-31 OPTICAL PICK-UP KSS-213B/S-N * 309 1-639-678-12 MOTOR (6P)(S) BOARD 310 1-783-740-11 WIRE (FLAT TYPE) (16 CORE) M101 X-2625-877-1 MOTOR ASSY (SPINDLE) M102 X-2625-769-1 MOTOR ASSY (SLED) The components

• NOTE: • Due to standardization, replacements in the parts list may be different from the parts specified in the diagrams or the components used on the set. • -XX, -X mean standardized parts, so they may have some difference from the original one. • Items marked “*” are not stocked since they are seldom required for routine service. Some delay should

• Sony HCD-GRX2, — 7 — 1 Screw (+P 2.6 × 4) 2 Bracket 4 Bracket 5 Flat type wire (CN06) 3 Screw (+P 2.6 × 4 ) 6 CD tray 1 Two screws (+BVTP 3 × 10) 2 Two screws (+BVTP 3 × 10) Two craws 7 CD DECODER board 3 Belt 6 Flat type wire (CN06) 5 Flat type wire (CN01) 4 Connector (CN05) !º Connector (CN03) 8 Two screw (+BVTP 3 × 10) 9 Sheet Craw Craw 2-5. CD TRAY 2-6. CD DECODER BOARD

• 5-10. IC PIN FUNCTION Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 I/O — O O O O O O O O — I I — — I — O O I O O O O I — O O — I I I I I O — O O I I — O I O I I — I I I I Pin Name VDD POWER OUT S. MUTE OUT TU. MUTE OUT TUNED OUT TAPE REC OUT D

• Sony HCD-GRX2, HCD-GRX2/RX33 — TUNER/CD SECTION — — 17 — — 18 — CE 19 12 5 3 4 2 24 1 PLL IC103 FM XO XI CLK DI DO CE CLK DI DO OPTICAL PICK-UP BLOCK APC Q01 38 +5V VC LD GND A C B E F FOCUS COIL F+ F T+ T TRACKING COIL 33 34 39 36 35 48 APC FOCUS PHASE COMPENSATION DECODER SERIAL/ PARALLEL CONVERTER FE AMP RF AMP IIL TTL TTL IIL COMAND VC TRACKING PHASE COMPENSATION LD PD E F PD1 PD2 6 24 23 20 19 22 21 31 25 SENS RFO FOK C OUT DATA XLT CLK XRST 13 FEO TAO IC03 T.T/TRAY MOTOR DRIVER CD RF/SERVO PROSSESOR IC01 (1/2) 4 5 T IN 3 2 1 VR PD PD 18 17 20

• Sony HCD-GRX2, — 10 — 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 that outputs match within 2 dB of peak. 3. Mode: Playback 4. After the adjustments, apply suitable locking compound to the parts adjusted. Adjustment Location: Remove the cassette lid before adjustment (See page 8) test tape WS-48B (3kHz, 0dB) Tape Speed Adjustment (Deck A) Procedure: 1. Mode: Playback 2. Adjust the SFR201 so that the frequency counter reads 3,000 Hz ± 90Hz. Adjustment Location: MAIN

• Sony HCD-GRX2, — 58 — 6-5. CD MECHANISM DECK SECTION 1 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks * 201 1-670-801-11 MOTOR BOARD 202 3-669-480-11 + PTPWH 2 203 4-992-168-01 TRAY, CHANGER BASE 204 4-992-180-01 PLATE, BLIND 205 4-992-181-01 LEVER, SENSOR (SW) 206 4-992-182-01 SPRING, SENSOR (SW) LEVER 207 4-992-170-01 BELT, LOADING 208 4-992-171-01 PULLEY, GEAR 209 4-992-179-01 GEAR, TR 210 4-992-177-01 GEAR, TR LOCK 211 4-992-178-01 GEAR (C), RELAY 212 4-992-187-01 CUSHION 213 4-992-186-01 CUSHION, SW LEVER 214 4-99

• Sony HCD-GRX2, Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks — 69 — C616 1-130-491-00 MYLAR 0.047uF 5% 50V C617 1-130-491-00 MYLAR 0.047uF 5% 50V C619 1-130-491-00 MYLAR 0.047uF 5% 50V C620 1-126-933-11 ELECT 100uF 20% 16V C621 1-161-494-00 CERAMIC 0.022uF 25V C623 1-162-294-31 CERAMIC 0.001uF 10% 50V C624 1-162-294-31 CERAMIC 0.001uF 10% 50V C625 1-162-294-31 CERAMIC 0.001uF 10% 50V < CONNECTOR > * CN301 1-770-332-11 HOUSING, CONNECTOR (PC BOARD) 17P CN601 1-568-468-11 SOCKET, CONNECTOR 18P < DIODE > D601 8-719-911-19 DIODE 1SS119-25 D602 8-719-911-19 DIODE 1SS119-25 D603 8-719-911-19 DIODE 1SS119-25 D604 8-719-911-19 DIODE 1SS119-25 D605 8-719-911

• Sony HCD-GRX2, HCD-GRX2/RX33 US Model Canadian Model HCD-RX33 E Model Australian Model HCD-GRX2 SERVICE MANUAL MINI Hi-Fi COMPONENT SYSTEM MICROFILM HCD-GRX2/RX33 is the tuner, deck, CD and amplifier section in MHC-GRX2/RX33. — Continued on next page — SPECIFICATIONS Model Name Using Similar Mechanism HCD-G101 CD Mechanism Type CX3 Base Unit Type KSM-213BCM Optical Pick-up Type KSS-213B/S-N Model Name Using Similar Mechanism HCD-G101 DECK-A TK20FX-SW943-800 DECK-B TK20FX-SW943-800 CD SECTION TAPE DECK SECTION

• Sony HCD-GRX2, — 5 — SECTION 2 DISASSEMBLY Two craws 1 Pull out the CD tray and remove the CD door with releasing claws into the direction of arrow. 2 CD door 2-1. CD DOOR Note : Follow the disassembly procedure in the numerical order given. 6 CD mechanism deck 1 Two screws (+B 3 × 8) 3 Two screws (+BVTP 3 × 10) 2 Screw (+PTPWH 3 × 10) 2 Screw (+PTPWH 3 × 10) 4 Flat type wire (CN09) 5 Harness (CN302) 2-2. CD MECHANISM DECK

• Sony HCD-GRX2, — 9 — Precaution 1. Clean the following parts with a denatured alcohol-moistened swab: record/playback head pinch rollers erase head rubber belts capstan idlers 2. Demagnetize the record/playback head with a head demagnetizer. 3. Do not use a magnetized screwdriver for the adjustments. 4. After the adjustments, apply suitable locking compound to the parts adjusted. 5. The adjustments should be performed with the rated power supply voltage unless otherwise noted. Torque Measurement SECTION 3 MECHANICAL ADJUSTMENTS Meter reading 40 to 70 g • cm (0.56 - 0.

• Sony HCD-GRX2, Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks — 71 — (SWEDISH/DANISH/FINNISH) 3-862-423-81 MANUAL, INSTRUCTION (POLISH/RUSSIAN) 4-982-031-01 COVER, BATTERY (for RM-SG5) ************************************************************ ************** HARDWARE LIST ************** #1 7-685-647-79 SCREW +BVTP 3 × 10 TYPE2 IT-3 #2 7-682-547-04 SCREW +BVTT 3 × 6 (S) #3 7-682-548-04 SCREW +B 3 × 8 #4 7-685-106-19 SCREW +P 2 × 10 TYPE2 SLIT #5 7-685-131-19 SCREW +P 2.6 × 4 TYPE2 SLIT #6 7-685-139-29 SCREW, TAPPING, (M2.6 × 20) #7 7-685-134-19 SCREW +PTPWH 2.6 × 8 (TYPE2) #8 7-685-138-19 SCREW +BTP 2.6 × 16 TYPE2

• Sony HCD-GRX2, Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks — 70 — S616 1-572-674-11 SWITCH, PUSH (FILE SELECT) S617 1-572-674-11 SWITCH, PUSH (DBFB) S618 1-572-674-11 SWITCH, PUSH (DISPLAY) < VIBRATOR > X601 1-760-096-11 VIBRATOR, CRYSTAL 4.1943MHz ************************************************************ * 1-666-444-11 R/P SWITCH BOARD **************** < CAPACITOR > C236 1-126-024-11 ELECT 220uF 20% 16V C244 1-161-494-00 CERAMIC 0.022uF 25V < DIODE > D206 8-719

• Sony HCD-GRX2, — 6 — 7 Screw (+PTPWH 3 × 10) 3 Screw (+BVTP 3 × 10) 4 Screw (+BVTP 3 × 10) 5 Two screw (+BVTP 3 × 10) 6 Two screws (+BVTP 3 × 10) 7 Screw (+PTPWH 3 × 10) 8 Screw (+BVTP 3 × 10) 2 Three screws (+BVTP 3 × 10) 1 Connector (CN401) 9 Front panel HOW TO SET THE POWER CORD power cord 1 Harness (CN303) 8 H.P board 2 Harness (CN204) 3 Connector 4 Connector (CN202) 5 Connector (CN201) 7 MAIN board 6 Two screws (+KTP 3 × 8) Craw 2-3. FRONT PANEL 2-4. MAIN BOARD AND H.P B

• Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks — 66 — < TRANSISTOR > Q101 8-729-672-42 TRANSISTOR 2SC2724-C Q102 8-729-178-63 TRANSISTOR 2SC2786-K Q103 8-729-119-76 TRANSISTOR 2SA1175-HFE Q104 8-729-041-83 TRANSISTOR 2SK544E Q105 8-729-194-57 TRANSISTOR 2SC945-P Q106 8-729-194-57 TRANSISTOR 2SC945-P Q108 8-729-194-57 TRANSISTOR

• Sony HCD-GRX2, Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks — 65 — C505 1-126-964-11 ELECT 10uF 20% 50V C506 1-126-964-11 ELECT 10uF 20% 50V C507 1-126-968-11 ELECT 100uF 20% 50V C508 1-126-964-11 ELECT 10uF 20% 50V C509 1-126-964-11 ELECT 10uF 20% 50V C510 1-164-159-11 CERAMIC 0.1uF 50V C511 1-162-195-31 CERAMIC 4.7PF 10% 50V C512 1-162-195-31 CERAMIC 4.7PF 10% 50V C513 1-130-495-00 MYLAR 0.1uF 5% 50V C514 1-130-495-00 MYLAR 0.1uF 5% 50V C515 1-126-968-11 ELECT 100uF 20% 50V C516 1-164-159-11 CERAMIC 0.1uF 50V C517 1-126-933-11 ELECT 100uF 20% 16V C518 1-161-379-00 CERAMIC 0.01uF 20% 25V C519 1-161-379-00 CERAMIC 0.01uF 20% 25V C520 1-130-495-00

• Sony HCD-GRX2, HCD-GRX2/RX33 — 19 — — 20 — — 21 — — 22 — — 23 — FM IF REG GND VCC FM DET S-CURVE TUNING DRIVE LEVEL DET AM/FM IF BUFE ALC BUFFER AM OSC AM MIX AM RF AMP AGC AM DETAM IF COMP FM AM MUTE DECORDER STEREO DRIVE FF TRIG PHASE DET VCO AM/FM SW PILOT DET STEREO SW 3 6 9 122 5 8 11 1 4 7 10 22 19 16 13 23 20 17 14 24 21 18 15 OSC/FMSD OSC AFC AM RF SMET AM HPF AF DET MPX VCO MPX IN R OUT L OUT PL DET FM IF AM MIX REG AM IF GND TU LED ST IND FM DET VCC AM/FM PH DET PH DET XIN CE DI CL DO SYC IN0 IN1 OUT0 OUT1 OUT2 OUT3 SHIFT REGISTER LATCH 12 BIT PROGRAMMABLE DIVIDER SWALLOW COUNTER 1/16 . 1/17

• — 3 — SAFETY CHECK-OUT After correcting the original service problem, perform the following safety checks before releasing the set to the customer: Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below. LEAKAGE The AC leakage from any exposed metal part to earth G

• Sony HCD-GRX2, — 11 — TUNER SECTION 0 dB=1µV AM Tuning Voltage Adjustment Procedure: 1. Set the reception frequency of the unit to 530 kHz. 2. Adjust L105 for 1.2 ± 0.05 V reading on the DC voltmeter. 3. Set the reception frequency of the unit to 1,710 kHz. 4. Confirm that the voltage reading on the DC voltmeter is within 8.0 ± 0.5 V. Adjustment Location: MAIN board (See page 12) AM Tracking Adjustment Procedure: 1. Tune the set to 600 kHz. 2. Set the output of AM RF SSG so that the input level of the set will become 60 dB (µV/m). 3. Adjust L104 so that when the waveform on the oscilloscope is maximum, no noise appears. 4. Tune the set to 1,400

• Sony HCD-GRX2, — 4 — SECTION 1 GENERAL LOCATION OF PARTS AND CONTROLS 1 Disc tray 2 DISC 1 button 3 DISC 2 button 4 DISC 3 button 5 DISC SKIP button 6 § OPEN/CLOSE button 7 DBFB button 8 VOLUME knob 9 Display window !º CLOCK TIMER SET button !¡ TIMER ON/OFF button !™ DISPLAY DEMO !£ TUNER/BAND !¢ · ∏ (play/pause) button !∞ ENTER/NEXT button !§ ≠ ± CD AMS/TUNER PRESET TIMER SET buttons !¶ FILE SELECT !• I/u (POWER) button !ª TUNER MEMORY REPEAT button @º EDIT button @¡ STEREO/M NO, PLAY MODE button @™ TAPE button @£ π (STOP) button @¢ 0 ) CD/TUNER button @∞ PHONES jack @

• Sony HCD-GRX2, Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks — 68 — R408 1-247-855-11 CARBON 10K 5% 1/4W R409 1-249-417-11 CARBON 1K 5% 1/4W F R410 1-247-847-11 CARBON 4.7K 5% 1/4W R411 1-247-807-11 CARBON 100 5% 1/4W R412 1-247-807-11 CARBON 100 5% 1/4W R413 1-247-855-11 CARBON 10K 5% 1/4W R414 1-247-855-11 CARBON 10K 5% 1/4W R500 1-247-807-11 CARBON 100 5% 1/4W R501 1-249-438-11 CARBON 56K 5% 1/4W R502 1-249-438-11 CARBON 56K 5% 1/4W R503 1-247-841-11 CARBON 2.7K 5% 1/4W R504 1-247-841-11 CARBON 2.7K 5% 1/4W R505 1-249-438-11 CARBON 56K 5%

• Sony HCD-GRX2, — 59 — 6-6. CD MECHANISM DECK SECTION 2 259 264 263 257 267 256 258 262 261 254 266 252 253 251 268 259 255 #1 #1 #1 #1 #7 not supplied #7 #7 #10 Base unit block #1 M104 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 251 1-769-856-11 WIRE (FLAT TYPE) (5 CORE) 252 4-992-190-01 UD-CAM 253 4-992-191-01 UD-GEAR 254 4-992-195-01 MAGNET * 255 4-992-196-01 CHASSIS, MAIN 256 4-992-197-01 BELT, LOADING GEAR 257 4-992-198-01 PULLEY (B), GEAR 258 4-992-199-01 GEAR, SLIDE 259 4-992-200-01 ROLLER 261 4-992-192-01 SPRING, BRAKE CAM 262 4-992-193-01 LEVER, SW * 263 1-670-800-11 SW (D) BOARD * 264 1-670-799-11 SW (C) BOARD 266 4-992-194-01 CLAMP

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