Sony HCDGSX-100-W Service manual

HCD-GSX100W

SERVICE MANUAL

Ver. 1.3 2005.05

HCD-GSX100W is the Amplifier, CD player, Tape Deck and Tuner section in MHC-GSX100W.

CD Section

TAPE Section

US Model

Canadian Model

Model Name Using Similar Mechanism HCD-GS300AV

CD Mechanism Type CDM64C-K1BD47B

Base Unit Name BU-K1BD47B

Optical Pick-up Name KSM-213BFN

Model Name Using Similar Mechanism HCD-GS300AV

Tape Transport Mechanism Type CMAL1Z234A

SPECIFICATIONS

Main Unit Amplifier section For the U.S. model AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC DISTORTION: With 6-ohm loads, both channels driven, from 120 – 10,000 Hz; rated 200 watts per channel minimum RMS power, with no more than 10% total harmonic distortion from 250 milliwatts to rated output.

Continuous RMS power output (reference):

200 + 200 W(6 ohms at 1 kHz, 10%THD)

Total harmonic distortion less than 0.09% (6 ohms at 1 kHz, 125 W)

Inputs VIDEO (MD) IN (phono jacks):

voltage 250/450 mV, impedance 47 kilohms

AUDIO IN (phono jacks):450 mV, impedance 47 kilohms

Outputs VIDEO OUT (phono jacks):

max. output level 1Vp-p, unbalanced, Sync negative, load impedance 75 ohms

PHONES (stereo phone jack):

accepts headphones of 8 ohms or more

SPEAKER: accepts impedance of 6 to 16 ohms

CD player section

System Compact disc and digital audio system Laser Semiconductor laser

(CD: λ=780 nm) Emission duration: continuous

Frequency response CD: 20 Hz – 20 kHz (±0.5 dB) Wavelength 780 – 790 nm Signal-to-noise ratio More than 90 dB Dynamic range More than 90 dB OPTICAL OUT (CD) (Square optical connector jack, rear panel) Wavelength 660 nm Output level –18 dBm

Tape deck section

Recording system 4-track 2-channel stereo Frequency response 40 – 13,000 Hz (±3dB),

using Sony TYPE I cassettes

— Continued on next page —

9-877-219-04

MiNi Hi-Fi COMPONENT SYSTEM

Sony Corporation

Audio Group

Published by Sony Engineering Corporation

HCD-GSX100W

Ver 1.1 2003.09

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 Tuning range 530 – 1,710 kHz

(with the tuning interval set at 10 kHz) 531 – 1,710 kHz

(with the tuning interval set at 9 kHz) Antenna AM loop antenna, external antenna terminal Intermediate frequency 450 kHz

Transmitter

Carrier frequency 913.5 – 914.5 MHz Channel CHANNEL1: 913.5 MHz CHANNEL2: 914.0 MHz CHANNEL3: 914.5 MHz Modulation FM stereo Power source DC 9 V: supplied AC power adaptor

(AC-GSX100) Audio input phono jacks/stereo mini jack

TABLE OF CONTENTS

1. SERVICING NOTES ······················································· 4

2. GENERAL ·········································································· 5

3. DISASSEMBLY ································································ 7

3-1. Top Cabinet ··································································· 8 3-2. Front Cabi ASSY ··························································· 8 3-3. Back Panel ASSY ·························································· 9 3-4. Detect Board, Main Board············································· 9 3-5. Amp Board ·································································· 10 3-6. Power Board ································································ 10 3-7. Holder (LED-S), Middle (R), Power Bracket ············· 11 3-8. CD Mechanism Deck (CDM64C-K1BD47B) ············ 11 3-9. Base Unit (BU-K1BD47B),

D-Sensor (OUT) Board, T-Sensor Board ···················· 12

3-10. D-Sensor (IN) Board, Load SW Board,

LT Motor Board ··························································· 12 3-11. CD LED Board ···························································· 13 3-12. BU Holder ASSY ························································ 13 3-13. CD Board, Optical Pick-up (KSM-213BFN) ·············· 14 3-14. RX-Base PC Board ASSY,

Mechanical Deck (CMAL1Z234A), Cassette Holder · 14 3-15. Game Board, H/P Board ·············································· 15 3-16. Display Board ······························································ 15 3-17. KEY (2) Board, CD Sync Button ································ 16 3-18. KEY Board, Wireless Board ········································ 16

4. TEST MODE ···································································· 17

5. MECHANICAL ADJUSTMENTS ····························· 18

6. ELECTRICAL ADJUSTMENTS ······························ 18

General

Power requirements: 120 V AC, 60 Hz Power consumption: 170 W Dimensions (w/h/d) incl. projecting parts and controls Amplifier/Tuner/ Tape/CD section: Approx. 280 x 326 x 490 mm Transmitter Approx. 136 x 100 x 103 mm Mass: Approx. 11.5 kg Transmitter Approx. 146 g

Supplied accessories Remote (1)

size AA (R6) batteries (2) AM loop antenna (1) FM lead antenna (1) Transmitter (1) AC adaptor (1) Connecting cord phono plug-stereo miniplug (1m) (1)

Design and specifications are subject to change without notice.

7. DIAGRAMS

7-1. Circuit Boards Location ·············································· 22 7-2. Block Diagrams ··························································· 23

– CD Section – ···························································· 23 – Tuner/Tape Deck Section – ······································ 24 – INPUT/EVR Section – ············································· 25 – Amp Section – ·························································· 26

– Display/Power Supply Section – ······························ 27 7-3. Printed Wiring Board – CD Section – ························ 28 7-4. Schematic Diagram – CD Section – ··························· 29 7-5. Printed Wiring Board

– CD Motor/Sensor Section – ····································· 30 7-6. Schematic Diagram

– CD Motor/Sensor Section – ····································· 31 7-7. Printed Wiring Board – Main Section – ····················· 32 7-8. Schematic Diagram – Main Section (1/3) – ··············· 33 7-9. Schematic Diagram – Main Section (2/3) – ··············· 34 7-10. Schematic Diagram – Main Section (3/3) – ··············· 35 7-11. Printed Wiring Board – Amp Section – ······················ 36 7-12. Schematic Diagram – Amp Section –························· 37 7-13. Printed Wiring Board – Display Section – ················· 38 7-14. Schematic Diagram – Display Section – ···················· 39 7-15. Printed Wiring Board – Key Section – ······················· 40 7-16. Schematic Diagram – Key Section – ·························· 41 7-17. Printed Wiring Board – Power Section – ··················· 42 7-18. Schematic Diagram – Power Section – ······················ 43 7-19. Printed Wiring Board – RX Section – ························ 44 7-20. Schematic Diagram – RX Section – ··························· 45 7-21. IC Block Diagrams ······················································ 46 7-22. IC Pin Function Description ········································ 48

8. EXPLODED VIEWS

8-1. General Section ··························································· 53 8-2. Front Panel Section ····················································· 54 8-3. Chassis Section ···························································· 55 8-4. Mechanism Deck Section-1 (CDM64C-K1BD47B) ··· 56 8-5. Mechanism Deck Section-2 (CDM64C-K1BD47B) ··· 57 8-6. Base Unit Section (BU-K1BD47B) ···························· 58

9. ELECTRICAL PARTS LIST ······································· 59

HCD-GSX100W

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be damaged by heat.

Flexible Circuit Board Repairing

• Keep the temperature of the soldering iron around 270 ˚C during repairing.

• Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering or unsoldering.

SAFETY CHECK-OUT

After correcting the original service problem, perform the following safety check 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 TEST

The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes.). Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA

WT-540A. Follow the manufacturers’ instructions to use these instruments.

2. A battery-operated AC milliammeter. The Data Precision 245

digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a VOM

or battery-operated AC voltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2 V AC range are suitable. (See Fig. A)

CAUTION

Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

NOTES ON HANDLING THE OPTICAL PICK-UP 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. on clothing and the human body. During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care.

NOTES ON LASER DIODE EMISSION CHECK

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 pickup block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.

LASER DIODE AND FOCUS SEARCH OPERATION CHECK

Carry out the “S curve check” in “CD section adjustment” and check that the S curve waveforms is output three times.

To Exposed Metal Parts on Set

1.5 k

0.15 µF

Fig. A. Using an AC voltmeter to check AC leakage.

SAFETY-RELATED COMPONENT WARNING!!

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.

Ω

Earth Ground

voltmete (0.75 V)

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ! LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

HCD-GSX100W

SECTION 1

SERVICING NOTES

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: J-2501-126-A) is used for checking the display. To check, perform the following procedure.

Checking Method:

1. Press the I/1 button to turn the power on, set the disc to the

disc table with the “test disc” label facing right, and chuck the disc.

2. Press the [CD] button to set CD function, and press the bB button to

playback the disc.

3. The following will be displayed on the liquid crystal display. Display : 1KHZ/0dB/L R

4. Pressing the [-- ] or [ +] button, select the track. The text

data of each track will be displayed. For details of the displayed contents for each track, refer to “Table 1: CD-TEXT TEST DISC TEXT Data Contents”.

Restrictions in CD-TEXT Display

In this unit, some special characters will not be displayed properly. These will be displayed as a space or a character resembling it.

Table 1: CD-TEXT TEST DISC TEXT Data Contents

(TRACKS No. 1 to 20: Normal Characters)

CLEANING OBJECTIVE LENS OF OPTICAL PICK-UP

• In cleaning the objective lens of optical pick-up, be sure the following below.

Remove the magnet assy.

optical pick-up

bracket (top 60) hole

Put a cotton bud into the hole on the bracket (top 60) and clean the OP lens.

Note 1. In cleaning the lens, do not apply an excessive force.

As the optical pick-up is vulnerable, application of excessive force could damage the lens holder.

Note 2. In cleaning, do not use a cleaner other than exclusive cleaning

liquid (KK-91 or isopropyl alcohol).

Note 3. Wipe the objective lens spirally from center toward outside. (See

Figure A)

Open the torsion holder (magnet) in direction of

arrow

TRACK

No.

1 1kHz/0dB/L&R

2 20Hz/0dB/L&R

3 40Hz/0dB/L&R

4 100Hz/0dB/L&R

5 200Hz/0dB/L&R

6 500Hz/0dB/L&R

7 1kHz/0dB/L&R

8 5kHz/0dB/L&R

9 7kHz/0dB/L&R

10 10kHz/0dB/L&R

11 16kHz/0dB/L&R

12 18kHz/0dB/L&R

13 20kHz/0dB/L&R

14 1kHz/0dB/L&R

15 1kHz/–1dB/L&R

16 1kHz/–3dB/L&R

17 1kHz/–6dB/L&R

18 1kHz/–10dB/L&R

19 1kHz/–20dB/L&R

20 1kHz/–60dB/L&R

Displayed Contents

(Figure A)

Note: Track No. 21 to 99 are not displayed.

MAIN UNIT

ALPHABETICAL ORDER

A – H

ALBM + qs ALBM – wk AUDIO IN jack w; CD wj CD SYNC 0 CLEAR wl DISC SELECT ws DISPLAY 7 Display window 2 ENTER e; FM MODE/REPEAT 9 GAME qg GAME MIXING qa

SECTION 2

GENERAL

I – Z

ILLUMINATION 6 KEYBOARD INPUT jack ql MENU ea PHONES jack qk PLAY MODE/DIRECTION 8 POWER ILLUMINATOR wd Remote sensor es TAPE qd Tape deck 3 TUNER/BAND wh VIDEO (MD) qf VIDEO IN jack wa VOLUME wf WIRELESS wg

HCD-GSX100W

This section is extracted from instruction manual.

BUTTON DESCRIPTIONS

?/1 (power) 1 Z PUSH (tape deck) 3 nN (play) 4 X (pause) 4 x (stop) 4

REC PAUSE/START 5

Z PUSH (front cover) qh m (rewind) qj M (fast forward) qj . (go back) qj > (go forward) qj

HCD-GSX100W

REMOTE CONTROL

ALPHABETICAL ORDER A – Q

ALBM +/– qfwa CD wl CLEAR 0 CLOCK/TIMER SELECT 2 CLOCK/TIMER SET 3 DISC +/– qgw; DISPLAY qa ENTER wg GAME wj GAME MIXING 9 GROOVE qj MENU wh PLAY MODE 6 PRESET +/– qswd PRESET EQ qh

R – Z

REPEAT 8 SLEEP 1 SURROUND ql TAPE 5 TUNER/BAND e; TUNING +/– qdws VIDEO (MD) wk VOL +/– qk WIRELESS 7

This section is extracted from instruction manual.

BUTTON DESCRIPTIONS

?/1 (power) 4 nN (play) wf X (pause) wf x (stop) wf . (go back) wd m (rewind) ws M (fast forward) qd > (go forward) qs

• This set can be disassembled in the order shown below.

SET

TOP CABINET

SECTION 3

DISASSEMBLY

HCD-GSX100W

Ver 1.1 2003.09

FRONT CABI ASSY

BACK PANEL ASSY

DETECT BOARD, MAIN BOARD

AMP BOARD

POWER BOARD

HOLDER (LED-S),

MIDDLE(R) BRACKET ,

POWER BRACKET

CD MECHANISM DECK

(CDM64C-K1BD47B)

BASE UNIT (BU-K1BD47B), D-SENSOR (OUT) BOARD,

T-SENSOR BOARD

RX-BASE PC BOARD ASSY

MECH

DECK (CMAL1Z234A),

CASSETTE HOLDER

DISPLAY

KEY(2)

BOARD, CD SYNC BUTTON

CD LED BOARD

BU HOLDER ASSY

BOARD

GAME BOARD, H/P BOARD

KEY BOARD, WIRELESS BOARD

D-SENSOR (IN) BOARD,

LOAD SW BOARD,

LT MOT OR BOARD

OPTOCAL PICK-UP (KSM-213BFN)

CD BOARD,

HCD-GSX100W

Note: Follow the disassembly procedure in the numerical order given.

3-1. TOP CABINET

Tw o screws

Three screws

(BVTP3

Panel side (L)

10)

(BVTP3

10)

Top

cabinet

Three screws (BVTP3

10)

Connecter (CN101 )

Wire (Flat type) (CN309 )

Connector (CN441)

Panel side (R)

Tw o screws (BVTP3

10)

3-2. FRONT CABI ASSY

Screw (BVTP3 ×8)

Screw (KTP3 ×8)

Lugs

Connector (CN705)

Connector (CN358)

Three screws

(BVTP3

Wire (Flat type) (CN720)

Wire (Flat type)

(CN316)

Wire (Flat type)

(CN314)

10)

Front cabi ASSY

Connector (CN306)

Connector (CN310)

Four screws (BVTP3

Lugs

Screw (KTP3 ×8)

Screw (BVP3 ×8)

3-3. BACK PANEL ASSY

)

Connector (CN356)

Connector (CN351)

DC Fan (M351)

Tw o screws (BVTP 3x10)

Back panel ASSY

HCD-GSX100W

Three screws (BVTP 3x10)

Tw o screws (BVTP 3x10)

Four screws (BVTP 3x10)

Screw (BVTP 3x10)

Four screws (BVTP 3x10

Tw o screws (BVTP 3x10)

3-4. DETECT BOARD, MAIN BOARD

Connector (CN354)

Wire (Flat type) (CN305)

Lug

SPK board

Connector (CN308)

DETECT board

Remove six solders

(CNP315)

Wire (Flat type) (CN311)

Screw

(BVTP3 ×8)

Lug

Screw

(BVTP3 ×8)

Connector (CN307)

Connector (CN301)

MAIN board

Screw

(BVTP3 ×8)

HCD-GSX100W

)

3-5. AMP BOARD

Connector (CN353)

Tw o screws (BVTP3

Tw o screws (BVTP3 ×8)

Tw o screws (BVTP3 ×8

AMP board

3-6. POWER BOARD

Tw o screws (BVTP4

POWER boar

Lug

3-7. HOLDER (LED-S), MIDDLE (R) BRACKET, POWER BRACKET

)

Tw o screws (BVTP3

Three screws (BVTP3

Middle (R) bracket

HCD-GSX100W

Ver 1.1 2003.09

Tw o screws (BVTP3

Three screws (BVTP3

Power bracke

Tw o screws (BVTP3

Holder (LED-S)

3-8. CD MECHANISM DECK (CDM64C-K1BD47B)

Screw (M3 ×12)

Ta ble (60)

screw (BVTP3 ×8)

CD mechanism deck (CDM64C-K1BD47B)

Lower chassis

Four screws (BVTP3

Tw o screws (BVTP3

Screw

(PSW3

Four screws

(BVTP3

HCD-GSX100W

3-9. BASE UNIT (BU-K1BD47B), D-SENSOR (OUT) BOARD, T-SENSOR BOARD

Screw (BVTP3 ×8)

D-SENSOR (OUT) board

Bracket (top 60)

Three screws (BVTP3

Base unit (BU-K1BD47B)

Three screws (BVTP3

T-SENSOR board

3-10. D-SENSOR (IN) BOARD, LOAD SW BOARD, LT MOTOR BOARD

Belt

D-SENSOR (IN) board

Tw o screws (BVTP3

Cautions of an assembly

Pulley (60)

Motor (60) ASSY (M442)

Motor (60) ASSY (M441)

Screw (BVTP3 ×8)

Brackcet (d-sensor)

LT MOTOR board

Three screws (BVTP3

LOAD SW board

3-11. CD LED BOARD

)

CD LED board

HCD-GSX100W

Opens to right and left and CD LED BOARD is removed upwards from a slot.

3-12. BU HOLDER ASSY

BU holder ASSY

Tension spring (F1)

Tension spring (F-2)

Tw o screws (PTP2.6 ×8

Tw o screws (PTP2.6 ×8)

HCD-GSX100W

Ver 1.1 2003.09

3-13. CD BOARD, OPTICAL PICK-UP (KSM-213BFN)

CD board

Remove two solders.

Optical pick-up (KSM-213BFN)

Wire (Flat type) (CN102)

Remove two solders.

Screw (P2 ×5)

3-14. RX-BASE PC BOARD ASSY, MECHANICAL DECK (CMAL1Z234A), CASSETTE HOLDER

Cassette holder

Cassette spring

To w screws (BVTP3

TMR plat

Mech

deck (CMAL1Z234A)

Four screws (BVTP3

RX-BASE PC board ASSY

Screw (BVTP3

amper

Lug

3-15. GAME BOARD, H/P BOARD

HCD-GSX100W

Wire retainer pwb

Harness

Front cabinet

GAME board

Tw o screws (BVTP2.6

H/P board

Tw o screws (BVTP2.6

Retainer H/P

3-16. DISPLAY BOARD

Wire (Flat type) (CN714 )

Connector (2p)

SW701

Three screws (BVTP2.6 ×10)

Connector (CN713)

HCD-GSX100W

)

3-17. KEY (2) BOARD, CD SYNC BUTTON

Connector (CN706)

Tw o screws (BVTP2.6

KEY (2) board

Tw o screws (BVTP3 ×10

CD sync button

Screw(BVTP3 ×10)

3-18. KEY BOARD, WIRELESS BOARD

Volume cover

Volume indicator

Three claws

Volume rubber

Washer

Nut

Volume knob

Disc knob

KEY board

Four screws (BVTP3

Connecter (CN703

Tw o screws (BVTP3

WIRELESS board

10)

Three screws (BVTP3

10)

SECTION 4

TEST MODE

HCD-GSX100W

[Panel Test Mode]

Procedure:

1. Press three buttons of x , [MENU], and [DISPLAY] simulta-

neously.

2. LEDs and fluorescent indicator tube are all turned on.

3. Press the [MENU] button and go to the version display mode.

Press the m button and go to the key and jog test mode.

4. To release from these mode, press three buttons in the same manner as step 1, or disconnect the power cord.

– Version display mode –

In the version display mode, each time the [MENU] button is pressed, the display changes in the order of MC, GC, CD, CDD, CDM A, CDM B, BDA, BDB, ST, TA, TM and TC. Press the . button to display the date of the software.

– Key and jog test mode –

In the key check mode, the fluorescent indicator tube displays “K 0 J0 V0”. Each time a button is pressed, “K” value increases without I/1 and [DISPLAY] buttons. However, once a button is pressed, it is no longer taken into account. “J” value increases like 1, 2, 3 ... if turn the [DISC SELECT] dial clockwise, or it decreases like 0, 9, 8 ... if turn the

[DISC SELECT] dial counterclockwise.

“V” value increases like 1, 2, 3 ... if turn the [VOLUME] knob clockwise, or it decreases like 0, 9, 8 ... if turn the [VOLUME] knob counterclockwise.

[Cold Reset]

• The cold reset clears all data including preset data stored in the

RAM to initial conditions. Execute this mode when returning the set to the customer.

Procedure:

1. Turn the power ON or set to the DEMO mode.

2. Press three buttons of x , [CLEAR], and [DISPLAY] simultaneously.

3. The set is reset, and becomes DEMO mode.

[CD Ship Mode and RAM Initialize]

• This mode moves the optical pick-up to the position durable to

vibration, and initializes the RAM. Use this mode when returning the set to the customer after repair.

Procedure:

1. Press the I/1 button to turn the power ON and select the function CD.

2. Press three buttons of taneously.

3. The set is turn the power off and initializes the RAM automatically. A message “LOCK” is displayed on the fluorescent indicator tube, and the CD delivery mode is set.

[ENTER], [REPEAT], and X simul-

[CD Service Mode]

• This mode can run the CD sled motor optionally. Use this mode, for instance, when cleaning the optical pick-up.

Procedure:

1. Press the I/1 button to turn the power ON.

2. Select the function “CD”.

3. Press three buttons of [ENTER], M , and

[PLAY MODE] simultaneously.

4. Set to the Sled Servo mode.

5. With the CD in stop status, press the M button to move the

optical pick-up to outside track and display “SLED OUT”, or press the m button to move the optical pick-up to inside track and display “SLED IN”.

6. To exit from this mode, perform as follows.

1) Move the optical pick-up to the most inside track.

2) Press three buttons of x , [CLEAR], and [DISPLAY]

simultaneously. (cold reset)

Notes: • Always move the optical pick-up to most inside track when

exiting from this mode. Otherwise, a disc will not be unloaded.

• Do not run the sled motor excessively, otherwise the gear can be chipped.

[VACS Test Mode]

• This mode is used to switch on and off the VACS (Variable Attenuation Control System).

Procedure:

1. Press the I/1 button to turn the set on.

2. To enter the test mode, press the two buttons [ENTER] , [PLAY

MODE] and X simultaneously.

3. The message “VACS OFF” or “VACS ON” appears.

4. To exit from this mode, press the I/1 button to turn the set

off.

[Function Selection Mode]

• This mode is used to select the input VIDEO or input MD.

Procedure:

1. Turn off the set.

2. Press the two buttons x and [VIDEO $MD%] simultaneously.

3. The message “VIDEO” or “MD” appears.

4. To exit from this mode, press the I/1 button to turn the set

off.

[AM Channel Step 9 kHz/10 kHz Selection Mode]

• The AM tuning interval can be changed over 9 kHz or 10 kHz.

Procedure:

1. Press the I/1 button to turn the power on.

2. Select the function “TUNER”, and press the [TUNER/BAND]

button to select the BAND “AM”.

3. Press the I/1 button to turn the power off.

4. Press the [ENTER] and I/1 buttons simultaneously.

5. Either the message “AM 9k STEP” or “AM 10k STEP” appears, and thus the channel step is changed over.

HCD-GSX100W

SECTION 5

MECHANICAL ADJUSTMENTS

SECTION 6

ELECTRICAL ADJUSTMENTS

• TAPE MECHANISM DECK SECTION

Precaution

1. Clean the following parts with a denatured alcohol-moistened swab:

record/playback heads 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

Mode

FWD

FWD /REV back tension

REV

Tor que meter

CQ-102C

CQ-102RC

Meter reading

2.44 mN • m to 8.33 mN • m 30 to 85 g • cm

(0.42 – 1.17 oz • inch)

0.14 mN • m to 0.59 mN • m

2 to 6 g • cm

(0.03 – 0.08 oz • inch)

2.94 mN • m to 7.84 mN • m 31 to 71 g • cm

(0.43 – 0.98 oz • inch)

DECK SECTION

Precaution

1. Demagnetize the record/playback head with a head demagnetizer.

2. Do not use a magnetized screwdriver for the adjustments.

3. After the adjustments, apply suitable locking compound to the parts adjust.

4. The adjustments should be performed with the rated power supply voltage unless otherwise noted.

5. The adjustments should be performed in the order given in this service manual. (As a general rule, playback circuit adjustment should be completed before performing recording circuit adjustment.)

6. The adjustments should be performed for both L-CH and RCH.

7. Switches and controls should be set as follows unless otherwise specified.

•Test Tape

Tape Signal Used for

P-4-A100 10 kHz, – 10 dB Azimuth Adjustment

WS-48B 3 kHz, 0 dB Tape Speed Check

0 dB = 0.775 V

FF/REW

CQ-201B

6.86 mN • m to 20.6 mN • m 71 to 210 g • cm

(0.98 – 2.91 oz • inch)

HCD-GSX100W

)

Record/Playback Head Azimuth Adjustment

Procedure:

1. Mode: Playback (FWD)

test tape P-4-A100 (10 kHz, – 10 dB)

SPK board SPEAKER terminal (J357 L-CH, R-CH

set

level meter

+ –

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 1dB of peak.

Output level

within 1dB

L-CH peak

R-CH peak

within 1dB

Screw position

L-CH peak

Screw position

R-CH peak

3. Mode: Playback

Adjustment Location: Record/Playback/Erase Head

Head azimuth adjustment screw

Tape Speed Check

Mode: Playback

test tape WS-48B (3 kHz, 0 dB)

set

frequency counter

+ –

SPK board test tape P-4-A100 (10 kHz, – 10 dB)

L-CH

set

R-CH

in phase 45°90°135°180

SPEAKER terminal (J357)

L-CH

R-CH

waveform of oscilloscope

good

oscilloscope

wrong

°

4. Reapeat step 1 to 3 in playback (REV) mode.

5. After the adjustments, apply suitable locking compound to the parts adjusted.

SPK board SPEAKER terminal (J357) L-CH, R-CH

1. Insert the WS-48B into the deck.

2. Press the bB button on the deck.

3. Confirm that the frequency counter reads 3,000 ± 90 Hz.

Sample value of Wow and Flutter: 0.3% or less W.RMS (JIS)

(WS-48B)

HCD-GSX100W

+ –

CD board

TP (RFAC)

TP (DVC)

oscilloscope

CD SECTION

Note:

1. CD Block is basically designed 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.

S-curve Check

Connection:

oscilloscope

CD board

TP (FE1)

TP (DVC)

Procedure:

1. Connect an oscilloscope to test point TP (FE1) and TP (DVC)

on the CD board.

2. Turn the power on.

3. Put the disc (YEDS-18) in and turned power switch on again

and actuate the focus search. (actuate the focus search when disc table is moving in and out)

4. Check the oscilloscope waveform (S-curve) is symmetrical

between A and B. And confirm peak to peak level within 2 ± 1 Vp-p.

+ –

RFAC Level Check

Connection:

Procedure:

1. Connect an oscilloscope to test point TP (RFAC) and TP (DVC) on the CD board.

2. Turn the power on.

3. Put the disc (YEDS-18) in to playback the number five track.

4. Confirm that oscilloscope waveform is clear and check RFAC signal level is correct or not.

Note: A clear RFAC signal waveform means that the shape “◊” can be

clearly distinguished at the center of the waveform.

RFAC signal waveform

VOLT/DIV: 200 mV TIME/DIV: 500 ns

level: 1.35 ± 0.4 Vp-p

S-curve waveform

symmetry

Note: •Try to measure several times to make sure than the ratio of A : B

or B : A is more than 10 : 7.

•Take sweep time as long as possible and light up the brightness to obtain best waveform.

within 2

1 Vp-p

Checking Location: CD board (Conductor side)

(See page 21.)

Checking Location: CD board (Conductor side)

(See page 21.)

HCD-GSX100W

E-F Balance Check

Connection:

oscilloscope

CD board

TP (TE1)

TP (DVC)

+ –

Procedure:

1. Connect an oscilloscpe to test point TP (TE1) and TP (DVC) on the CD board.

2. Turn the power on.

3. Select the function “CD”.

4. Press three buttons of [ENTER], M , and

[PLAY MODE] simultaneously to set the CD service mode.

5. Put the disc (YEDS-18) in to playback the number five track.

6. Press the . button. The message “TRAVERSE” is displayed. (The tracking servo and the sledding servo are turned OFF)

7. Check the level B of the oscilliscope's waveform and the A (DC voltage) of the center of the Traverse waveform. Confirm the following : A/B x 100 = less than ± 22%

Tr averse Waveform

Center of the waveform

Checking Location:

– CD BOARD (Conductor Side) –

TP (FE1) TP (TE1)

TP (DVC)

IC101

TP (RFAC)

IC103

IC104

level: 1.15 ± 0.5 Vp-p

A (DC

voltage)

8. Press the . button. The message “TRAVERSE” is displayed. (The tracking servo and sledding servo are turned ON) Confirm the C (DC voltage) is almost equal to the A (DC voltage) is step 5.

9. To exit from this mode, perform as follows.

1) Move the optical pick-up to the most inside track.

2) Press three buttons of x , [CLEAR], and [DISPLAY]

simultaneously. (cold reset)

Notes: • Always move the optical pick-up to most inside track when

exiting from this mode. Otherwise, a disc will not be unloaded.

• Do not run the sled motor excessively, otherwise the gear can be chipped.

Tr averse Waveform

C (DC voltage)

Tr acking servo

Sled servo

OFF

Tr acking servo

Sled servo

Checking Location: CD board (Conductor side)

HCD-GSX100W

These are omitted.

7-1. Circuit Boards Location

SECTION 7

DIAGRAMS

CD LED board

DISPLAY board

KEY

board

WIRELESS board

GAME board

KEY(2)

board

RX unit

CD board

T-SENSOR board

H/P board

AMP board

D-SENSOR (OUT) board

TUNER board

DETCT board

SPK board

POWER boar

MAIN board

LOAD SW board

LT MOTOR board

D-SENSOR (IN) board

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.

Note:

• All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.

• All resistors are in Ω and 1/ specified.

•

• 2 : nonflammable resistor.

• 5 : fusible resistor.

• C : panel designation.

• A : B+ Line.

• B : B– Line.

•Voltages and waveforms are dc with respect to ground

•Voltages are taken with a VOM (Input impedance 10 MΩ).

: internal component.

Note:

The components identified by mark 0 or dotted line with mark 0 are criti- cal for safety. Replace only with part number specified.

under no-signal (detuned) conditions. CD board section no mark : CD PLAY Other board section no mark : FM (): TAPE PLAY <>: TAPE REC []: CD PLAY

Voltage variations may be noted due to normal production tolerances.

W or less unless otherwise

Note:

Les composants identifiés par une marque 0 sont critiques pour la sécurité. Ne les remplacer que par une piéce portant le numéro spécifié.

•Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F : FM f : AM J : CD c : DIGITAL OUT E : TAPE (PB) a : TAPE (REC) j : AUDIO IN k : VIDEO IN

For printed wiring boards.

Note:

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

•

• : Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

Caution: Pattern face side: Parts on the pattern face side seen from (Conductor B) the pattern face are indicated. Parts face side: Parts on the parts face side seen from (Component A) the parts face are indicated.

: internal component.

• Indication of transistor

These are omitted.

+ 50 hidden pages