SONY HCD-GZR88D, HCD-GZR99D Service Manual

Name: SONY HCD-GZR88D
Brand: SONY
SKU: 5857940
Rating: 5 (1 reviews)

5 (1)

SERVICE MANUAL

Sony Corporation

Audio&Video Business Group

Published by Sony Techno Create Corporation

HCD-GZR88D/GZR99D

HCD-GZR99D: E2, E51, AR, MX Model

DVD DECK RECEIVER

HCD-GZR88D/GZR99D: E3, E4, E15, PH, SP Model

DVD RECEIVER

9-889-536-01

2009F04-1

2009.06

E Model

Ver. 1.0 2009.06

• HCD-GZR88D/GZR99D are the tuner,

deck, DVD and ampliﬁ er section

in MHC-GZR88D/GZR99D.

DVD

Section

Model Name Using Similar Mechanism HCD-GZR77D

DVD Mechanism Type CDM74HF-DVBU101

Optical Pick-up Name KHM-313CAB

Tape Deck

Section

Model Name Using Similar Machanism HCD-GZR77D

Tape Transport Mechanism T ype CWP42FR605

SPECIFICATIONS

Ampliﬁ er Section

The following measured at AC 127 V, 60 Hz (Mexican model)

The following measured at AC 120, 220, 240 V, 50/60 Hz (Other models)

MHC-GZR99D

Power output (rated): 135 W + 135 W

(at 6 Ω, 1 kHz, 1% THD, at LINK MODE)

RMS output power (reference)

Front speaker: 175 W + 175 W

(per channel at 8 Ω, 1 kHz, 10% THD)

Satellite speaker: 70 W + 70 W

(per channel at 24 Ω, 1 kHz, 10% THD)

Subwoofer: 210 W (at 6 Ω, 100 Hz, 10% THD)

MHC-GZR88D

Power output (rated): 125 W + 125 W

(at 6 Ω, 1 kHz, 1% THD, at LINK MODE)

RMS output power (reference)

Front speaker: 175 W + 175 W

(per channel at 8 Ω, 1 kHz, 10% THD)

Satellite speaker: 70 W + 70 W

(per channel at 24 Ω, 1 kHz, 10% THD)

– Continued on next page –

Photo: HCD-GZR99D: E2 model

HCD-GZR88D/GZR99D

SAFETY-RELATED COMPONET 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.

Inputs

VIDEO/SAT VIDEO IN (phono jack):

1 Vp-p, 75 ohms

VIDEO/SAT AUDIO IN L/R (phono jacks):

voltage 250/450 mV, impedance 47 kilohms

MIC 1/MIC 2 (phone jacks):

sensitivity 1 mV, impedance 10 kilohms

Outputs

VIDEO OUT (phono jack):

max. output level 1 Vp-p, unbalanced,

Sync negative, load impedance 75 ohms

COMPONENT VIDEO OUT:

Y: 1 Vp-p, 75 ohms

PB/CB: 0.7 Vp-p, 75 ohms

PR/CR: 0.7 Vp-p, 75 ohms

DVD DIGITAL OUT (Square optical connector jack, rear panel):

Wavelength 650 nm

PHONES (stereo mini jack):

accepts headphones of 8 ohms or more

SUBWOOFER OUT (MHC-GZR88D only):

Voltage 1 V, impedance 1 kilohm

FRONT SPEAKER: Use only the supplied speaker SS-GZR99D.

SATELLITE SPEAKER: Use only the supplied speaker SS-RSX99D.

SUBWOOFER (MHC-GZR99D only):

Use only the supplied subwoofer

SS-WGV99D.

(USB) port: Type A (1)

Maximum current: 500 mA

Disc player section

System: Compact disc and digital audio and video

system

Laser Diode Properties

Emission duration:

Continuous Laser Output*:

Less than 44.6μW

*This output is the value measurement

at a distance of 200mm from the objective

lens surface on the Optical Pick-up Block

with 7mm aperture.

Frequency response

DVD (PCM 48 kHz): 2 Hz − 22 kHz (±1 dB)

CD: 2 Hz − 20 kHz (±0.5 dB)

Video color system format

Latin American model: NTSC

Other models: NTSC and PAL

Tape deck section (except for Latin American models)

Recording system: 4-track 2-channel, stereo

Tuner section

FM stereo, FM/AM superheterodyne tuner

FM tuner section

Tuning range: 87.5 − 108.0 MHz (50 kHz step)

Antenna: FM lead antenna

Antenna terminals: 75 Ω unbalanced

Intermediate frequency:

10.7 MHz

AM tuner section

Tuning range:

Latin American model:

530 – 1,710 kHz (with 10 kHz tuning interval)

531 – 1,710 kHz (with 9 kHz tuning interval)

Other models: 531 – 1,602 kHz (with 9 kHz tuning interval)

530 – 1,610 kHz (with 10 kHz tuning interval)

Antenna: AM loop antenna

Antenna terminals: External antenna terminal

Intermediate frequency:

450 kHz

General

Power requirements

Argentine and Thai models:

AC 220 V, 50/60 Hz

Mexican model: AC 127 V, 60 Hz,

Other models: AC 120, 220, 230 − 240 V, 50/60 Hz,

adjustable with voltage selector

Power consumption

MHC-GZR99D: 215 W

MHC-GZR88D: 170 W

Dimensions (w/h/d) (excl. speakers):

Approx. 280 × 326 × 440 mm

Mass (excl. speakers)

MHC-GZR99D: Approx. 13.2 kg (Latin American models),

approx.13.7 kg (other models)

MHC-GZR88D: Approx. 13.2 kg

Design and speciﬁ cations are subject to change without notice.

HCD-GZR88D/GZR99D

UNLEADED SOLDER

Boards requiring use of unleaded solder are printed with the lead-

free mark (LF) indicating the solder contains no lead.

(Caution: Some printed circuit boards may not come printed with

the lead free mark due to their particular size)

: LEAD FREE MARK

Unleaded solder has the following characteristics.

• Unleaded solder melts at a temperature about 40 °C higher

than ordinary solder.

Ordinary soldering irons can be used but the iron tip has to be

applied to the solder joint for a slightly longer time.

Soldering irons using a temperature regulator should be set to

about 350 °C.

Caution: The printed pattern (copper foil) may peel away if

the heated tip is applied for too long, so be careful!

• Strong viscosity

Unleaded solder is more viscous (sticky, less prone to ﬂ ow)

than ordinary solder so use caution not to let solder bridges

occur such as on IC pins, etc.

• Usable with ordinary solder

It is best to use only unleaded solder but unleaded solder may

also be added to ordinary solder.

NOTES ON CHIP COMPONENT REPLACEMENT

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

FLEXIBLE CIRCUIT BOARD REPAIRING

• Keep the temperature of 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.

Laser component in this product is capable of emitting radiation

exceeding the limit for Class 1.

This appliance is classiﬁ ed as

a CLASS 1 LASER product.

This marking is located on the

rear exterior.

CAUTION

Use of controls or adjustments or performance of procedures

other than those speciﬁ ed herein may result in hazardous radia-

tion exposure.

NOTES ON HANDLING THE OPTICAL PICK-UP

BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostat-

ic 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 ﬂ exible 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 reﬂ ective 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.

HCD-GZR88D/GZR99D

Model Parts No.

GZR88D: E3, E15

4-133-526-0[]

GZR88D: E4

4-133-526-1[]

GZR88D: E12

4-133-526-2[]

GZR88D: SP

4-133-526-3[]

GZR88D: TH

4-133-526-4[]

GZR88D: PH

4-133-526-5[]

GZR99D: E3, E15

4-133-527-0[]

GZR99D: E4

4-133-527-1[]

GZR99D: SP

4-133-527-2[]

GZR99D: PH

4-133-527-3[]

GZR99D: E2, E51, MX

4-133-527-4[]

GZR99D: AR

4-133-527-6[]

MODEL IDENTIFICATION

– Back Panel –

• Abbreviation

E3 : 240V AC area in E model

E15 : Iran model

E4 : 110 – 120V/220 – 240V AC area in E model

E12 : 220 – 240V AC area in E model

SP : Singapore model

TH : Thai model

PH : Philippines model

E2 : 120V AC area in E model

E51 : Chilean and Peruvian model

MX : Mexican model

AR : Argentina model

Parts No.

HCD-GZR88D/GZR99D

1. SERVICING NOTES ............................................. 6

2. DISASSEMBLY

2-1. Case (Side-L), Case (Side-R) .......................................... 9

2-2. Top Panel Section ........................................................... 9

2-3. Loading Panel ................................................................. 10

2-4. Chassis ............................................................................ 10

2-5. Front Panel Section ......................................................... 11

2-6. Back Panel Section ......................................................... 11

2-7. MAIN Board ................................................................... 12

2-8. POWER AMP Board ...................................................... 12

2-9. DVD Mechanism Deck, Tuner (TM901) ........................ 13

2-10. MIC Board, USB-LED Board ........................................ 13

2-11. Panel (FL) Section .......................................................... 14

2-12. Liquid Crystal Display Panel (LCD101) ........................ 14

2-13. FRONT Board, VOLUME Board ................................... 15

2-14. TC-AMP Board

(Except HCD-GZR99D: E2, E51, AR, MX Model) ....... 15

2-15. Tape Mechanism Deck

(Except HCD-GZR99D: E2, E51, AR, MX Model) ....... 16

2-16. Lid (TC-L), Lid (TC-R)

(Except HCD-GZR99D: E2, E51, AR, MX Model) ....... 16

2-17. DRIVER Board, SW Board ............................................ 17

2-18. SENSOR Board .............................................................. 17

2-19. MOTOR (TB) Board....................................................... 18

2-20. MOTOR (LD) Board ...................................................... 18

2-21. Chassis ............................................................................ 19

2-22. DMB19 Board ................................................................. 19

2-23. Base Unit ......................................................................... 20

2-24. Optical Pick-up ............................................................... 20

3. TEST MODE ............................................................ 21

4. MECHANICAL ADJUSTMENTS ...................... 26

5. ELECTRICAL ADJUSTMENTS ........................ 27

6. DIAGRAMS

6-1. Block Diagram –RF/Servo Section– ............................... 31

6-2. Block Diagram –Video Section– .................................... 32

6-3. Block Diagram –Main Section– ..................................... 33

6-4. Block Diagram –Audio Section– .................................... 34

6-5. Block Diagram –Display/Power Section– ...................... 35

6-6. Printed Wiring Boards –Driver Section– ........................ 37

6-7. Schematic Diagram –Driver Section– ............................ 38

6-8. Printed Wiring Board –DMB19 Board (1/2)– ................ 39

6-9. Printed Wiring Board –DMB19 Board (2/2)– ................ 40

6-10. Schematic Diagram –DMB19 Board (1/4)– ................... 41

6-11. Schematic Diagram –DMB19 Board (2/4)– ................... 42

6-12. Schematic Diagram –DMB19 Board (3/4)– ................... 43

6-13. Schematic Diagram –DMB19 Board (4/4)– ................... 44

6-14. Printed Wiring Board –Main Section– ............................ 45

6-15. Schematic Diagram –Main Section (1/3)– ...................... 46

6-16. Schematic Diagram –Main Section (2/3)– ...................... 47

6-17. Schematic Diagram –Main Section (3/3)– ...................... 48

6-18. Printed Wiring Board –Mic Section– .............................. 49

6-19. Schematic Diagram –Mic Section– ................................ 50

6-20. Printed Wiring Board –TC Amp Section

(Except HCD-GZR99D: E2, E51, AR, MX Model) – .... 51

6-21. Schematic Diagram –TC Amp Section

(Except HCD-GZR99D: E2, E51, AR, MX Model) – .... 52

6-22. Printed Wiring Board –Video Section–........................... 53

6-23. Schematic Diagram –Video Section– ............................. 54

6-24. Printed Wiring Boards –Front Section– .......................... 55

6-25. Schematic Diagram –Front Section– .............................. 56

6-26. Printed Wiring Board –Left Section– ............................. 57

6-27. Schematic Diagram –Left Section– ................................ 58

6-28. Printed Wiring Board –Right Section– ........................... 59

6-29. Schematic Diagram –Right Section– .............................. 60

6-30. Printed Wiring Board –LCD Control Section (1/2) – ..... 61

6-31. Printed Wiring Board –LCD Control Section (2/2) – ..... 62

6-32. Schematic Diagram –LCD Control Section– .................. 63

6-33. Printed Wiring Boards –Power Amp/HP Section– ......... 64

6-34. Schematic Diagram –Power Amp/HP Section– .............. 65

6-35. Printed Wiring Boards –Trans Section–.......................... 66

6-36. Schematic Diagram –Trans Section– .............................. 67

7. EXPLODED VIEWS

7-1. Overall Section ............................................................... 81

7-2. Front Panel Section-1 ...................................................... 82

7-3. Front Panel Section-2 ...................................................... 83

7-4. Top Panel Section

(Except HCD-GZR99D: E2, E51, AR, MX Model) ....... 84

7-5. Chassis Section-1 ............................................................ 85

7-6. Chassis Section-2 ............................................................ 86

7-7. DVD Mechanism Deck Section-1 .................................. 87

7-8. DVD Mechanism Deck Section-2 .................................. 88

8. ELECTRICAL PARTS LIST .............................. 89

HCD-GZR88D/GZR99D

SECTION 1

SERVICING NOTES

Notes on Disconnecting Between the OP Section (DVBU101) and the DMB19 Board

Note: When disconnecting between the OP section (DVBU101) and the DMB19 board, be sure to make a solder brige for electrostatic

prevention as illustrated in the ﬁ gure (before disconnection).

On the contrary, when installing the OP section, never remove the solder bride until the OP section and the DMB19 board are

connected.

Be sure to remove the solder bridge after the OP section and the DMB19 board have been connected.

Manual Opening and Closing the CD Tray

As illustrated, insert a ﬂ athead screwdriver and give a turn to the left to put the CD tray out.

Perform solder bridging to prevent damage by electrostatic

discharge when handling the BU as a single unit.

As illustrated, insert a flathead screwdriver

and give a turn to the left to put the tray out.

flathead screwdriver

CD tray

HCD-GZR88D/GZR99D

Service Position for the BU

DMB19 board

HCD-GZR88D/GZR99D

SECTION 2

DISASSEMBLY

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

2-1. CASE (SIDE-L),

CASE (SIDE-R)

(Page 9)

2-2. TOP PANEL SECTION

(Page 9)

SET

2-3. LOADING PANEL

(Page 10)

2-4. CHASSIS

(Page 10)

2-14. TC-AMP BOARD

(Page 15)

EXCEPT HCD-GZR99D: E2, E51, AR, MX MODEL

2-15. TAPE MECHANISM DECK

(Page 16)

2-16. LID (TC-L),

LID (TC-R)

(Page 16)

2-23. BASE UNIT

(Page 20)

2-24. OPTICAL PICK-UP

(Page 20)

2-21. CHASSIS

(Page 19)

2-22. DMB19 BOARD

(Page 19)

2-19. MOTOR (TB) BOARD

(Page 18)

2-20. MOTOR (LD) BOARD

(Page 18)

2-18. SENSOR BOARD

(Page 17)

2-5. FRONT PANEL SECTION

(Page 11)

2-11. PANEL (FL) SECTION

(Page 14)

2-10. MIC BOARD,

USB-LED BOARD

(Page 13)

2-12. LIQUID CRYSTAL DISPLAY PANEL

(LCD101)

(Page 14)

2-13. FRONT BOARD,

VOLUME BOARD

(Page 15)

2-7. MAIN BOARD

(Page 12)

2-6. BACK PANEL SECTION

(Page 11)

2-8. POWER AMP BOARD

(Page 12)

2-9. DVD MECHANISM DECK,

TUNER (TM901)

(Page 13)

2-17. DRIVER BOARD,

SW BOARD

(Page 17)

HCD-GZR88D/GZR99D

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

2-1. CASE (SIDE-L), CASE (SIDE-R)

2-2. TOP PANEL SECTION

1 screw

(+BVTP 3 u6)

1 screw

(+BVTP 3 u6)

0 top panel section

7 two hooks

8 top panel section

7 two hooks

4 claw

8 wire (flat type) (11 core)

(CN102)

9 wire (flat type) (11 core)

(CN621)

5 claw

2 screw

(+PWH 3 u8)

2 screw

(+PWH 3 u8)

3 screw

(+PWH 3 u8)

3 screw

(+PWH 3 u8)

HCD-GZR99D： E2, E51, AR, MX MODELEXCEPT HCD-GZR99D： E2, E51, AR, MX MODEL

1 three screws

(case 3 TP2)

2 three screws

(+P 3 u5)

5 case (side-L)

0 case (side-R)

6 three screws

(case 3 TP2)

7 three screws

(+P 3 u5)

HCD-GZR88D/GZR99D

2-3. LOADING PANEL

2-4. CHASSIS

3 loading panel

CD tray

flathead screwdriver

As illustrated, insert a flathead

screwdriver and give a turn to the left to

put the CD tray out.

1 screw

(+BVTP 3 u6)

6 CN1105 (4P)

2 two screws

(+BVTP 3 u8)

3 two screws

(+BVTP 3 u8)

5 chassis

7 wire (flat type) (5 core)

(CN704)

HCD-GZR88D/GZR99D

2-6. BACK PANEL SECTION

2-5. FRONT PANEL SECTION

6 screw

(+BVTP 3 u8)

7 screw

(+BVTP 3 u8)

8 screw

(+BVTP 3 u8)

9 two screws

(+BVTP 3 u8)

1 wire (flat type)

(7 core) (CN503)

2 wire (flat type)

(21 core) (CN501)

0 front panel section

3 CN407 (4P)

4 CN912 (4P)

5 CN1504 (3P)

5 two screws

(+BVTP 3 u6)

4 screw

(+BVTP 3 u6)

6 three screws

(+BVTP 3 u6)

7 two screws

(+BVTP 3 u6)

8 four screws

(+BVTP 3 u6)

qf back panel section

1 CN321 (2P)

qs CN1503

(3P)

qd CN602 (3P)

2 CN322 (5P)

3 CN324 (2P) (TH, AR, MX model)

CN323 (4P) (except TH, AR, MX model)

0 wire (flat type) (5 core)

(CN511)

qa wire (flat type) (7 core)

(CN1500)

HCD-GZR88D/GZR99D

2-8. POWER AMP BOARD

2-7. MAIN BOARD

3 screw

(+BVTP 3 u8)

0 heat sink section

4 three screws

(+BVTP 3 u8)

9 two screws

(+BVTP 3 u8)

qa POWER AMP board

7 two screws

(+BVTP 3 u8)

6 two screws

(+BVTP 3 u8)

5 two screws

(transistor)

2 CN401 (5P)

1 CN402 (12P)

1 two screws

(+KTP2 3 u8)

3 two screws

(+BVTP 3 u8)

2 WIRE HOLDER C board

5 wire (flat type) (9 core)

(CN211)

6 wire (flat type) (7 core)

(CN191)

7 wire (flat type) (9 core)

(CN504)

0 MAIN board

8 wire (flat type) (13 core)

(CN641)

9 CN951 (9P)

HCD-GZR88D/GZR99D

2-9. DVD MECHANISM DECK, TUNER (TM901)

2-10. MIC BOARD, USB-LED BOARD

8 MIC board

5 USB-LED board

holder (MIC PWB)

front panel section

7 CN704 (5P)

1 three knobs (MIC)

3 three screws

(+BVTP 2.6 (3CR))

6 three screws

(+BVTP 2.6 (3CR))

2 screw

(+BVTP 2.6 (3CR))

4 screw

(+BVTP 3 u8)

6 two screws

(+BVTP 3 u8)

9 two screws

(+BVTP 3 u6)

5 two screws

(+BVTP 3 u8)

1 two screws

(+KTP2 3 u8)

2 WIRE HOLDER C board

qa tuner (TM901)

3 wire (flat type) (13 core)

(CN701)

8 DVD MECHANISM DECK

0 wire (flat type) (9 core)

(connector)

HCD-GZR88D/GZR99D

2-12. LIQUID CRYSTAL DISPLAY PANEL (LCD101)

2-11. PANEL (FL) SECTION

1 CN861 (12P)

qf panel (FL) section

2 CN841 (10P)

3 claw

6 claw

7 claw

0 claw

qa claw

qs claw

4 claw

5 claw

8 claw

9 claw

9 liquid crystal display panel

(LCD101)

2 CN003 (26 core)

1 CN004 (2P)

4 LCD CTRL board

6 holder (LCD-R)

8 holder (LCD-L)

3 two screws

(+BVTP 2.6 (3CR))

5 two screws

(+BVTP 2.6 (3CR))

7 two screws

(+BVTP 2.6 (3CR))

HCD-GZR88D/GZR99D

2-13. FRONT BOARD, VOLUME BOARD

2-14. TC-AMP BOARD (EXCEPT HCD-GZR99D: E2, E51, AR, MX, MODEL)

9 FRONT board

panel (LCD) assy

8 VOLUME board

1 knob (VOL) assy

2 nut

3 holder (knob)

4 knob (jog)

5 five screws

(+BVTP 2.6 (3CR))

6 four screws

(+BVTP 2.6 (3CR))

7 three screws

(+BVTP 2.6 (3CR))

1 CN1301 (3P)

2 CN1302 (8P)

4 TC-AMP board

3 three screws

(+BVTP 2.6 (3-CR))

HCD-GZR88D/GZR99D

2-16. LID (TC-L), LID (TC-R) (EXCEPT HCD-GZR99D: E2, E51, AR, MX, MODEL)

2-15. TAPE MECHANISM DECK (EXCEPT HCD-GZR99D: E2, E51, AR, MX, MODEL)

1 four screws

(+BVTP 2.6 (3-CR))

3 three screws

(+BVTP 2.6 (3-CR))

4 two screws

(+BVTP 2.6 (3-CR))

5 tape mechanism deck

2 shield (top)

1 damper

4 damper

2 spring (TC-R)

5 spring (TC-L)

3 lid (TC-R)

7 panel (top TC)

6 lid (TC-L)

HCD-GZR88D/GZR99D

2-17. DRIVER BOARD, SW BOARD

2-18. SENSOR BOARD

6 DRIVER board

2 SW board

3 CN704 (2P)

4 CN703 (4P)

7 CN702 (5 core)

5 two

screws

(+BTTP (M2.6))

screw

(+BTTP (M2.6))

tray

belt (table)

pulley (table)

screw

(+BTTP (M2.6))

SENSOR board

gear (geneva)

CN731

(3P)

1 floating

screw

(+PTPWH M2.6)

6 floating

screw

(+PTPWH M2.6)

4 floating

screw

(+PTPWH M2.6)

HCD-GZR88D/GZR99D

2-20. MOTOR (LD) BOARD

2-19. MOTOR (TB) BOARD

Remove the two solders of motor.

MOTOR (TB) board

stopper

table motor assy (M741)

table assy

3 two

screws

(+BTTP (M2.6))

Remove the two solders of motor.

MOTOR (LD) board

belt (loading)

loading motor assy (M751)

2 two

screws

(+BTTP (M2.6))

HCD-GZR88D/GZR99D

2-21. CHASSIS

2-22. DMB19 BOARD

1 screw

(+BVTP 3 u6)

2 two screws

(+BVTP 3 u8)

3 two screws

(+BVTP 3 u8)

5 chassis

9 two screws

(+BVTP 3 u8)

0 two screws

(+BVTP 3 u8)

qs two screws

(+BVTP 3 u8)

qd screw

(+BVTP 2.6 (3CR))

2 wire (flat type)(9 core)

(CN1106)

3 wire (flat type)(7 core)

(CN1104)

8 wire (flat type)(24 core)

(CN101)

qf bracket (DMB)

5 wire (flat type)(7 core)

(CN4602)

1 CN1105 (4P)

4 CN1103 (3P)

6 CN601 (9P)

qa DMB19 board

7 CN201 (6P)

HCD-GZR88D/GZR99D

2-24. OPTICAL PICK-UP

2-23. BASE UNIT

1 two insulator screws

3 two insulators

4 two insulators

2 two insulator screws

optical pick-up

holder (310)

1 screw

(+PTPWH M2.6)

2 base unit

HCD-GZR88D/GZR99D

SECTION 3

TEST MODE

[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. Press the [

?/1

] button to turn on the system.

2. Press the [

] button, [DISC 3] button and [

?/1

] button

simultaneously.

3. The message “COLD RESET” appears on the liquid crystal

display panel. Then, the liquid crystal display panel becomes

blank for a while, and the system is reset.

[COMMON TEST MODE]

• This mode is used to check operations of the respective section

of Equalizer level, volume and VACS ON/OFF.

Procedure:

• To enter Common Test Mode

1. Press the [

?/1

] button to turn on the system.

2. Press the [

] button, [PRESET EQ] button and [DISC 1]

simultaneously.

3. The message “VACS0” appears on the liquid crystal

display panel.

• Check of Equalizer Level

1. Press the [EQ BAND/MEMORY] button repeatedly until a

message “ALL EQ MIN” appears on the liquid crystal

display panel. GEQ decreases to its minimum.

2. Press the [EQ BAND/MEMORY] button repeatedly until a

message “ALL EQ MAX” appears on the liquid crystal

display panel. GEQ increases to its maximum.

3. Press the [EQ BAND/MEMORY] button repeatedly until a

message “ALL EQ FLAT” appears on the liquid crystal

display panel. GEQ is set to ﬂ at.

• Check of Volume

1. Press the [DISPLAY] button repeatedly, the sound volume

increases to its maximum and message “VOLUME16” t

“VOLUME MAX” appears on the liquid crystal display

panel.

2. Press the [OPTIONS] button repeatedly, the sound volume

decreases to its minimum and message “VOLUME16” t

“VOLUME MIN” appears on the liquid crystal display panel.

• Check of VACS (Variable Attenuation Control System)

ON/OFF Select

1. Press the [REC TO USB] button repeatedly until a message

“VACS OFF” or “VACS ON” appears on the liquid crystal

display panel.

• To release from Common Test Mode

1. To release from this mode, press the [

?/1

] button.

2. To cold reset is enforced at the same time.

[AMP TEST MODE]

• This mode is used to display the real time VACS level and

check operations of the respective sections of Equalizer band

and DBFB ON/OFF.

Procedure:

• To enter AMP Test Mode

1. Press the [

?/1

] button to turn on the system.

2. Press the [

] button, [GROOVE] button and [DISC 1] button

simultaneously.

3. The message “AMP TEST IN” appears of the liquid crystal

display panel.

• Check of VACS Display/AMP Adjustment Select

1. Press the [REC TO USB] button repeatedly until a message

“V0 0 0” appears on the liquid crystal display panel. “0”

represents VACS level which is triggered by signal level.

2. Press the [REC TO USB] button repeatedly until a message

“D +6 +2 +4” appears on the liquid crystal display panel.

“+6” represents Equalizer Low level, “+2” represents

Equalizer Mid level and “+4” represents Equalizer High

level.

• Check of Equalizer Band Select

1. Press the [EQ BAND/MEMORY] button repeatedly until a

message “LOW +6 dB” appears on the liquid crystal display

panel. EQ Band is set to Low level.

2. Press the [EQ BAND/MEMORY] button repeatedly until a

message “MID +2 dB” appears on the liquid crystal display

panel. EQ Band is set to Middle level.

3. Press the [EQ BAND/MEMORY] button repeatedly until a

message “HIGH +4 dB” appears on the liquid crystal display

panel. EQ Band is set to High level.

• Change of Equalizer Band

1. Press the [EQ BAND/MEMORY] button repeatedly until a

message “LOW +6 dB” appears on the liquid crystal display

panel.

2. When the [OPERATION DIAL] ring is turned clockwise

or counterclockwise even slightly, “LOW +6 dB” change

to “LOW –8 dB” y “LOW +8 dB” appears on the liquid

crystal display panel.

3. Press the [EQ BAND/MEMORY] button repeatedly until a

message “MID +2 dB” appears on the liquid crystal display

panel.

4. When the [OPERATION DIAL] ring is turned clockwise

or counterclockwise even slightly, “MID +2 dB” change to

“MID –8 dB” y “MID +8 dB” appears on the liquid crystal

display panel.

5. Press the [EQ BAND/MEMORY] button repeatedly until a

message “HIGH +4 dB” appears on the liquid crystal display

panel.

6. When the [OPERATION DIAL] ring is turned clockwise

or counterclockwise even slightly, “HIGH +4 dB” change

to “HIGH –8 dB” y “HIGH +8 dB” appears on the liquid

crystal display panel.

• Check of DBFB ON/OFF Select

1. Press the [OPTIONS] button repeatedly until a message

“DBFB OFF” or “DBFB ON” appears on the liquid crystal

display panel.

• To release from AMP Test Mode

1. To release from this mode, press the [

?/1

] button.

HCD-GZR88D/GZR99D

[TCM OFFLINE MODE]

(EXCEPT HCD-GZR99D: E2, E51, AR, MX, MODEL)

• This mode prevents the system from tuning off automatically

when TCM is not connected. Therefore, measurements can be

done even when TCM is not connected during production.

Procedure:

1. Press the [

?/1

] button to turn off the system and enter the

clock display or demonstration mode.

2. Press the [REC TO TAPE] button, [DISC 3] button and [

?/1

]

button simultaneously. The system will turn on automatically.

3. The message “TCM OFFLINE” appears on the liquid crystal

display panel.

• To release from TCM OFFLINE Mode

1. To release from this mode, press the [

?/1

] button.

[PANEL TEST MODE]

• This mode is used to check the liquid crystal display panel,

LEDs, button, MASTER VOLUME dial, OPERATION DIAL

ring, system software version, DVD lib version, model name

and destination.

Procedure:

1. Press the [

?/1

] button to turn on the system.

2. Press the [

] button, [DISC 3] button and [DISPLAY] button

simultaneously.

3. Power illuminator LEDs and segment in liquid crystal display

panel are lighted up.

4. When you want to enter to the system software version

display model, press the [DISC 1] button. The system

software version appears on the liquid crystal display panel.

Press the [DISC 1] button again, the DVD lib version appears

on the liquid crystal display panel.

5. Press the [DISC 2] button the mode name and destination on

the liquid crystal display panel.

6. Press the [DISC 3] button the key encode test mode is

activated.

7. In the key encode test mode, the liquid crystal display panel

displays “KEY 0 0 0 0 0”.

Each time a button pressed, change the each numbers.

• To release from Panal Test Mode

1. To release from this mode, press the [

] button, [DISC 3]

button and [DISPLAY] button simultaneously.

[DVD SHIP MODE (WITHOUT MEMORY CLEAR)]

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

vibration. Use this mode when returning the set to the customer

after repair.

Procedure:

1. Press the [

?/1

] button to turn on the system.

2. Press the [DVD] button, to set the “DVD NO DISC” mode.

3. Press the [

] button

(HCD-GZR99D: E2, E51, AR, MX model)

or [

] button

(Except HCD-GZR99D: E2, E51, AR, MX model)

and [

?/1

] button simultaneously.

The system will turn off automatically.

4. After the “STANDBY” blinking display ﬁ nishes, a message

“LOCK” appears on the liquid crystal display panel and

the DVD ship mode is set.

• To release from DVD Ship Mode

1. To release from this mode, press the [

?/1

] button.

[DVD SHIP MODE (WITH MEMORY CLEAR)]

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

to vibration and clears all data including preset data stored in

the RAM to initial conditions after the power supply is turned

off. Use this mode when returning the set to the customer after

repair.

Procedure:

1. Press the [

?/1

] button to turn on the system.

2. Press the [DVD] button, to set the “DVD NO DISC” mode.

3. Press the [TUNING −] button, [DISC 3] button and [

?/1

]

button simultaneously.

4. After the “STANDBY” blinking display ﬁ nishes, a message

“COLD RESET” appears on the liquid crystal display panel

and the DVD ship mode is set.

• To release from DVD Ship Mode

1. To release from this mode, press the [

?/1

] button.

[DISC THEFT PREVENTION MODE]

• This mode let you lock the disc tray. When this mode is

activated, the disc tray will not open.

Procedure:

1. Press the [

?/1

] button to turn on the system.

2. Press the [DVD] button.

3. Press the [

] button and [OPEN/CLOSE

] button

simultaneously and hold down until “LOCKED” or

“UNLOCKED” appears on the liquid crystal display panel

(around 5 seconds).

• To release from Disc Theft Prevention Mode

1. This mode will not be deselected only by turning the power

off. To exit from the mode, perform the above item 4 again.

[DVD COLOR SYSTEM MODE]

• This mode let you change the color system of the video output

from PAL to NTSC or vice-versa.

Procedure:

1. Press the [

?/1

] button to turn on the system.

2. Press the [DVD] button.

3. Press the [

?/1

] button to turn off the system.

4. Press the [DISPLAY] button to switch the mode the clock

display or demonstration mode.

5. Press the [

] button and [

?/1

] button simultaneously.

The system will turn on automatically.

6. The message “COLOR PAL” or “COLOR NTSC” appears on

the liquid crystal display panel.

• To release from DVD Color System Mode

1. Once the color system has been selected, the mode is ﬁ xed

there after. If you wish to change the mode again, perform

the above item 4 again.

[DVD FIRMWARE VERSION MODE]

• This mode is used to display the DVD ﬁ rmware version.

Procedure:

1. Press the [

?/1

] button to turn on the system.

2. Press the [DVD] button.

3 Press the [

?/1

] button to turn off the system and enter the

clock display or demonstration mode.

4. Press the [

] button and [

?/1

] button simultaneously.

5. The version of DVD ﬁ rmware appears on the on-screen

display on TV.

HCD-GZR88D/GZR99D

• To release from DVD Firmware Version Mode

1. To release from this mode, press the [

?/1

] button.

[MTK REBOOT AVOIDANCE MODE]

• This mode is used to display the MTK Reboot Avoidance.

Procedure:

1. Press the [

?/1

] button to turn on the system.

2. Press the [DVD] button.

3. Press the [DVD] button, [DISPLAY] button and [TUNING +]

button simultaneously.

• To release from MTK Reboot Avoidance Mode

1. To release from this mode, press the [

?/1

] button.

[AM TUNER STEP CHAGE]

• The step interval of AM channels can be toggled between 9

kHz and 10 kHz.

Procedure:

1. Press the [

?/1

] button to turn on the system.

2. Press the [TUNER/BAND] button repeatedly to select the

“AM”.

3. Press the [

?/1

] button to turn off the system.

4. Press the [TUNING +] button and [

?/1

] button

simultaneously.

The system will turn on automatically.

5. The message “AM 9k STEP” or “AM 10k STEP” appears

on the liquid crystal display panel and thus the channel step

change.

[VIDEO/SAT FUNCTION CHANGE]

• This mode let you change from VIDEO to SAT and vice-versa.

Procedure:

1. Press the [

?/1

] button to turn on the system.

2. Press the [VIDEO/SAT] button.

3. Press the [VIDEO/SAT] button and [

] button

simultaneously.

The function will change to SAT. Press the same button again

to change from SAT to VIDEO.

[DVD SERVICE MODE]

• This mode let you make diagnosis and adjustment easily by

using the remote commander and the TV. The instructions,

diagnostic results, etc. are given on the on-screen display.

• TEST DISC LIST

Be sure to use the DVD disc that matches the signal standards of

your region.

• CD

YEDS-18 (Part No.: 3-702-101-01)

PATD-012 (Part No.: 4-225-203-01)

• DVD SL (Single Layer)

NTSC : HLX-503 (Part No.: J-6090-069-A)

HLX-504 (Part No.: J-6090-088-A)

PAL : HLX-506 (Part No.: J-6090-077-A)

• DVD DL (Dual Layer)

NTSC : HLX-501 (Part No.: J-6090-071-A)

HLX-505 (Part No.: J-6090-089-A)

PAL : HLX-507 (Part No.: J-6090-078-A)

• Procedure to enter to DVD Service Mode:

1. Press the [

?/1

] button to turn on the system.

2. Press the [DVD] button.

3. Press the [

] button and [OPEN/CLOSE

] button

simultaneously and then turn the [MASTER VOLUME] dial

clockwise.

4. The message “SERVICE IN” appears on the liquid crystal

display panel and the Top Menu of Remocon Diagnosis Menu

appears on the on-screen display on the TV. The model name,

main unit’s micom version information (IF-con) and DVD

ﬁ rmware version information (Syscon) are displayed at the

bottom of the on-screen display.

5. To execute each function, press its number by using numeric

button on the remote commander.

6. To release from this mode, press the [

?/1

] button to turn off

the system.

• Execute IOP Measurement

In order to execute IOP measurement, the following standard

procedures must be followed.

1. From the Top Menu of Remocon Diagnosis Menu, select “2.

Drive Manual Operation” by pressing the [2] button on the

remote commander. The following screen appears on the on-

screen display.

2. Select “3. Manual Adjustment” by pressing the [3] button on

the remote commander. The following screen appears on the

on-screen display.

Remocon Diagnosis Menu

0. External Chip Check

1. Servo Parameter Check

2. Drive Manual Operation

3. Emergency History

4. Version Information

Model Name

IF-con

Syscon

: STX5DS_E2

: Ver. 01.00 (0000)

: Ver. 1.200

Drive Manual Operation

1. Servo Control

2. Track/Layer Jump

3. Manual Adjustment

4. Mecha test mode

5. MIRR time Adjust

0. Return to Top Menu

Manual Adjust

1. Track Balance Adjust:

2. Track Gain Adjust:

3. Focus Balance Adjust:

4. Focus Gain Adjust:

5. Eg Boost Adjust:

6. Iop:

7. TRV. Level:

8. S curve (FE) Level:

9. RFL (PI) Level:

0. MIRR Time:

O o Change Value

RETURN Return to previous menu

HCD-GZR88D/GZR99D

3. Select “6. Iop:” by pressing the[6] button on the remote

commander.

4. Wait until a hexadecimal number appears in the on-screen

display as below:

5. Convert data from hexadecimal to decimal by using

conversion table.

6. Please ﬁ nd the label on the rear of the BU (Base Unit).

The default IOP value is written in the label.

7. Subtract between these two values.

8. If the remainder is smaller than 93 (decimal), then it is OK.

However if the value is higher than 93, then the BU is

defective and need to be change.

9. Press the[RETURN] button on the remote commander to

return to previous menu.

10. Press the[0] button on the remote commander to return to the

Top Menu of Remocon Diagnosis Menu.

11. Press the[

?/1

] button to turn off the system.

• Check Emergency History

To check the emergency history, please follow the following

procedure.

1. From the Top Menu of Remocon Diagnosis Menu, select “3.

Emergency History” by pressing the [3] button on the remote

commander. The following screen appears on the on-screen

display.

2. You can check the total time when the laser is turned on

during playback of DVD and CD from the above menu. The

maximum time, which can be displayed are 999h 59min.

3. You can check the error code of latest 10 emergency history

from the above menu. To view the previous or next page of

emergency history, press the[

] button or [

] button

on the remote commander. The error code consists of

• Error Code

The meaning of error code is as below:

01: Communication error (No reply from syscon)

02: Syscon hung up

03: Power OFF request when syscon hung up

19: Thermal shutdown

24: MoveSledHome error

25: Mechanical move error (5 Changer)

26: Mechanical move stack error

30: DC motor adjustment error

31: DPD offset adjustment error

32: TE balance adjustment error

33: TE sensor adjustment error

34: TE loop gain adjustment error

35: FE loop gain adjustment error

36: Bad jitter after adjustment

40: Focus NG

42: Focus layer jump NG

52: Open kick spindle error

51: Spindle stop error

60: Focus on error

61: Seek fail error

62: Read Q data/ID error

70: Lead in data read fail

71: TOC read time out (CD)

80: Can’t buffering

81: Unknown media type

• Parameter of error code

This is the detail of error code.

• Time of error code

This is the laser time when an error occurred.

To clear the Laser Hours

Press the [ DISPLAY] button and then press the [CLEAR]

button. The data for both CD and DVD data are reset.

Manual Adjust

1. Track Balance Adjust:

2. Track Gain Adjust:

3. Focus Balance Adjust:

4. Focus Gain Adjust:

5. Eg Boost Adjust:

6. Iop. ED

7. TRV. Level:

8. S curve (FE) Level:

9. RFL (PI) Level:

0. MIRR Time:

O o Change Value

RETURN Return to previous menu

Emg. History Check

1. 01 05 04 04

Laser Hours CD 999h 59min

DVD 999h 59min

00 92 46 00

00 00 00 00

00 00 23 45

2. 02 02 01 01 00 A9 4B 00

00 00 00 00

00 00 23 45

Next Next Page Prev Prev Page

O Return to Top Menu

Example of Error code

1. 01 05 04 04 00 92 46 00

00 00 00 00 00 00 23 45

Example of Error code

1. 01 05 04 04 00 92 46 00

00 00 00 00 00 00 23 45

Example of Error code

1. 01 05 04 04 00 92 46 00

00 00 00 00 00 00 23 45

Emg. History Check

1. 01 05 04 04

Laser Hours CD 0h 0min

DVD 0h 0min

00 92 46 00

00 00 00 00 00 00 23 45

2. 02 02 01 01 00 A9 4B 00

00 00 00 00 00 00 23 45

Next Next Page Prev Prev Page

O Return to Top Menu

HCD-GZR88D/GZR99D

To clear the Emergency History

Press the [DVD TOP MENU] button and then press the

[CLEAR] button.

The error code for all emergency history would be reset.

To clear the Initialize Setup Data

Press the [DVD/TUNER MENU] button and then press the

[CLEAR] button on the remote commander.

To return to the Top Menu of Remocon Diagnosis Menu

Press the [0] button on the remote commander.

• Check Version Information

To check the version information, please follow the following

procedure.

1. From the Top Menu of Remocon Diagnosis Menu, select “4.

Version Information” by pressing the [4] button on the remote

commander. The following screen appears on the on-screen

display.

To return to the Top Menu of Remocon Diagnosis Menu,

press the [0] button on the remote commander.

Emg. History Check

1. 00 00 00 00

Laser Hours CD 999h 59min

DVD 999h 59min

00 00 00 00

2. 00 00 00 00 00 00 00 00

00 00 00 00 00 00 00 00

Next Next Page Prev Prev Page

O Return to Top Menu

Version information

O Return to Top Menu

Firm (Main) : Ver. xxxxx

Firm (Sub) : xxxxx

RISC : xxxxx

8032 : xxxxx

Audio DSP : xxxxx

Servo DSP : xxxxx

Emg. History Check

Initialize setup data...

Laser Hours CD

999h 59min

DVD 999h 59min

Next Next Page Prev Prev Page

O Return to Top Menu

HCD-GZR88D/GZR99D

SECTION 4

MECHANICAL ADJUSTMENTS

Except HCD-GZR99D: E2, E51, AR, MX Model:

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 Torque meter Meter reading

FWD CQ-102C

3.06 N • m to 6.96 N • m

31 to 71 g • cm

(0.43 – 0.98 oz • inch)

FWD

back tension

CQ-102C

0.19 N • m to 0.58 N • m

2 to 6 g • cm

(0.02 – 0.08 oz • inch)

REV CQ-102RC

3.06 N • m to 6.96 N • m

31 to 71 g • cm

(0.43 – 0.98 oz • inch)

REV

back tension

CQ-102RC

0.19 N • m to 0.58 N • m

2 to 6 g • cm

(0.02 – 0.08 oz • inch)

FF/REW CQ-201B

6.96 N • m to 14.02 N • m

71 to 143 g • cm

(0.98 – 1.99 oz • inch)

FWD tension CQ-403A

9.80 N • m

100 g or more

(3.53 oz or more)

REV tension CQ-403R

9.80 N • m

100 g or more

(3.53 oz or more)

HCD-GZR88D/GZR99D

Checking Location: DMB19 board (Side A)

SECTION 5

ELECTRICAL ADJUSTMENTS

When the optical pick-up assy is replaced, perform the “Execute

IOP Measurement”.

Execute IOP Measurement (See page 23)

[TEST DISC LIST]

Be sure to use the DVD disc that matches the signal standards of

your region.

• CD

YEDS-18 (Part No.: 3-702-101-01)

PATD-012 (Part No.: 4-225-203-01)

• DVD SL (Single Layer)

NTSC : HLX-503 (Part No.: J-6090-069-A)

HLX-504 (Part No.: J-6090-088-A)

PAL : HLX-506 (Part No.: J-6090-077-A)

• DVD DL (Dual Layer)

NTSC : HLX-501 (Part No.: J-6090-071-A)

HLX-505 (Part No.: J-6090-089-A)

PAL : HLX-507 (Part No.: J-6090-078-A)

[RFMON Level Check]

Connection:

Procedure:

1. Connect an oscilloscope to CN105 pin 6 (RFMON) and

CN105 pin 3 (GND) on the DMB19 board.

2. Turn the power on.

3. Set the test disc (refer to the TEST DISC LIST) on the tray

and press the [

] button

(HCD-GZR99D: E2, E51, AR, MX model)

or [

] button

(Except HCD-GZR99D: E2, E51, AR, MX model)

to playback.

4. Conﬁ rm that oscilloscope waveform is clear and check

RFMON signal level is correct or not.

Note: A clear RFMON signal waveform means that the shape

“◊” can be clearly distinguished at the center of the

waveform.

FM Tune Level Check

Procedure:

1. Turn on the set.

2. Input the following signal from signal generator to FM

antenna input directly.

Carrier frequency: A = 87.5 MHz, B = 98 MHz, C = 108 MHz

Deviation : 75 kHz

Modulation : 1 kHz

ANT input : 35 dBμ (EMF)

Note: Use 75 ohm coaxial cable to connect signal generator and

the set.

You cannot use video cable for checking.

Use signal generator whose output impedance is 75 ohm.

3. Set to FM tuner function and tune A, B and C signals.

4. Conﬁ rm “TUNED” is lit on the display for A, B and C

signals.

When the selected station signal is received in good condition,

“TUNED” is displayed.

DVD SECTION

TUNER SECTION

–

CN105 pin 6 (RFMON)

CN105 pin 3 (GND)

oscilloscope

DMB19 board

RFMON signal waveform

VOLT/DIV: 200 mV

TIME/DIV: 500 nS

level: 0.58 ± 1.23 Vp-p (DVD)

0.57 ± 1.1 Vp-p (CD)

CN105 pin 3

(GND)

CN105 pin 6

(RFMON)

– DMB19 BOARD (SIDE A) –

IC104

CN105

CN1104

IC101

CN1103

set

signal

generator

HCD-GZR88D/GZR99D

Video Level Check (VIDEO BOARD)

Purpose

This adjustment is made to satisfy the NTSC standard, and if not

adjusted correctly, the brightness will be too large or small.

Procedure:

1. Connect oscilloscope to VIDEO OUT jack.

2. Load a DVD reference disc playback.

3. Check the video signal level is 1.00±0.07Vp-p.

VIDEO SECTION

Except HCD-GZR99D: E2, E51, AR, MX Model:

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

R-CH.

7. Switches and controls should be set as follows unless

otherwise speciﬁ ed.

• Test Tape

Tape Signal Used for

P-4-A063 6.3 kHz, –10 dB Azimuth Adjustment

Record/Playback Head Azimuth Adjustment

DECK B

Note: Perform this adjustments for both decks

Procedure:

1. Mode: Playback

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.

DECK SECTION

0 dB = 0.775V

oscilloscope

set

J1502

VIDEO OUT

75 ȍ

–

1.00 ± 0.07 Vp-p

(WHITE 100%)

–

level meter

test tape

P-4-A063

(6.3 kHz, –10 dB)

MAIN board

IC101

pin wh (L-CH)

pin ql (R-CH)

MAIN board

IC101

pin t; (GND)

screw

position

L-CH

peak

within

1 dB

output

level

L-CH

peak

R-CH

peak

within

1 dB

screw

position

R-CH

peak

HCD-GZR88D/GZR99D

3. Mode: Playback

4. After the adjustments, apply suitable locking compound to

the pats adjusted.

Adjustment Location: Record/Playback/Erase Head (Deck B)

oscilloscope

waveform of oscilloscope

in phase

good wrong

45° 90° 135° 180°

R-CH

L-CH

test tape

P-4-A063

(6.3 kHz, –10 dB)

MAIN

board

IC101

pin wh

pin t;

pin ql

reverse

forward

HCD-GZR88D/GZR99D

SECTION 6

DIAGRAMS

• Circuit Boards Location

VOLUME board

FRONT board

LCD CTRL board

TC-AMP board

(except HCD-GZR99D: E2, E51, AR, MX model)

DMB19 board

DRIVER board

SW board

SENSOR board

TRANS-SUB board

VIDEO board

MOTOR (LD) board

MOTOR (TB) board

MIC board

USB-LED board

HP board

LEFT board

RIGHT board

POWER AMP board

MAIN board

TRANS board

+ 80 hidden pages

SONY HCD-GZR88D, HCD-GZR99D Service Manual

TABLE OF CONTENTS

SERVICING NOTES

DISASSEMBLY

2-3. LOADING PANEL

2-4. CHASSIS

2-8. POWER AMP BOARD

2-7. MAIN BOARD

2-12. LIQUID CRYSTAL DISPLAY PANEL (LCD101)

2-11. PANEL (FL) SECTION

2-13. FRONT BOARD, VOLUME BOARD

2-14. TC-AMP BOARD (EXCEPT HCD-GZR99D: E2, E51, AR, MX, MODEL)

2-16. LID (TC-L), LID (TC-R) (EXCEPT HCD-GZR99D: E2, E51, AR, MX, MODEL)

2-15. TAPE MECHANISM DECK (EXCEPT HCD-GZR99D: E2, E51, AR, MX, MODEL)

2-17. DRIVER BOARD, SW BOARD

2-18. SENSOR BOARD

2-20. MOTOR (LD) BOARD

2-19. MOTOR (TB) BOARD

2-21. CHASSIS

2-22. DMB19 BOARD

2-24. OPTICAL PICK-UP

2-23. BASE UNIT

TEST MODE

MECHANICAL ADJUSTMENTS

ELECTRICAL ADJUSTMENTS