Sony HCD-GTR33, HCD GTR55, HCD GTR77 Service Manual

HCD-GTR33/GTR55/GTR77

SERVICE MANUAL

Ver. 1.0 2010.03

• HCD-GTR33 is the ampliﬁ er, USB, CD player, tuner and tape deck (only E4 model) section in MHC-GTR33.

• HCD-GTR55 is the ampliﬁ er, USB, CD player, tuner and tape deck (only E4 model) section in MHC-GTR55.

• HCD-GTR77 is the ampliﬁ er, USB, CD player, tuner and tape deck (only E4 model) section in MHC-GTR77. Photo: HCD-GTR77 (E4 Model)

“WALKMAN” and “WALKMAN” logo are registered trademarks of Sony Corporation.

MICROVAULT is a trademark of Sony Corporation.

MPEG Layer-3 audio coding technology and patents licensed from Fraunhofer IIS and Thomson.

Windows Media is a registered trademark of Microsoft Corporation in the United States and/or other countries.

“Memory Stick” is a trademark of Sony Corporation.

Ampliﬁ er section

MHC-GTR77

The following are measured at Mexican model: AC 127 V, 60 Hz Other models: AC 120 V, 220 V, 240 V, 50/60 Hz Front/Satellite Speaker Power Output (rated): 120 W + 120 W (at 6 Ω, 1 kHz, 1% THD) Front Speaker RMS output power (reference): 225 W + 225 W (per channel at 8 Ω, 1 kHz) Satellite Speaker RMS output power (reference): 100 W + 100 W (per channel at 24 Ω, 1 kHz) Subwoofer RMS output power (reference): 130 W + 130 W (12 Ω, 100 Hz)

MHC-GTR55

The following are measured at Mexican model: AC 127 V, 60 Hz Other models: AC 120 V, 220 V, 240 V, 50/60 Hz Front Speaker Power Output (rated): 110 W + 110 W (at 6 Ω, 1 kHz, 1% THD) RMS output power (reference): 240 W + 240 W (per channel at 6 Ω, 1 kHz) Subwoofer RMS output power (reference): 240 W (6 Ω, 100 Hz)

MHC-GTR33

The following are measured at Mexican model: AC 127 V, 60 Hz Other models: AC 120 V, 220 V, 240 V, 50/60 Hz

Front Speaker Power Output (rated): 75 W + 75 W (at 6 Ω, 1 kHz, 1% THD) RMS output power (reference): 165 W + 165 W (per channel at 6 Ω, 1 kHz) Subwoofer RMS output power (reference): 160 W (6 Ω, 100 Hz)

Inputs

PC (AUDIO IN) L/R Voltage 700 mV, impedance 47 kilohms MIC Sensitivity 1 mV, impedance 10 kilohms

(USB) port: Type A

Outputs

PHONES Accepts headphones of 8 Ω or more

USB section

Supported bit rate MP3 (MPEG 1 Audio Layer-3): 32 kbps – 320 kbps, VBR WMA: 48 kbps – 192 kbps AAC: 48 kbps – 320 kbps Sampling frequencies MP3 (MPEG 1 Audio Layer-3): 32 kHz/44.1 kHz/48 kHz WMA: 44.1 kHz AAC: 44.1 kHz Transfer speed Full-Speed Supported USB device Mass Storage Class Maximum current 500 mA

Disc player section

System Compact disc and digital audio system

CD Section

Tape Section (Only for E4 model)

Model Name Using Similar Mechanism HCD-GTZ4/GTZ4i/GTZ5

CD Mechanism Type CDM88BL-DVBU101

Optical Pick-up Name KHM-313CAB/C2NP

Model Name Using Similar Mechanism HCD-GT111/GT222/GT444/GT555

Tape mechanism Type CS-21SC-900TP

SPECIFICATIONS

Laser Diode Properties Emission Duration: Continuous Laser Output*: Less than 44.6 μW * This output is the value measurement at

a distance of 200 mm from the objective lens surface on the Optical Pick-up Block

with 7 mm aperture. Frequency response 20 Hz – 20 kHz Signal-to-noise ratio More than 90 dB Dynamic range More than 88 dB

Tape deck section (For African model only)

Recording system 4-track 2 channel, stereo

Tuner section

FM stereo, FM/AM superheterodyne tuner

FM tuner section

Tuning range North American models:

87.5 MHz – 108.0 MHz (100 kHz step) Other models:

87.5 MHz – 108.0 MHz (50 kHz step) Antenna FM lead antenna Antenna terminals 75 ohms unbalanced Intermediate frequency

10.7 MHz

AM tuner section

Tuning range Pan American and Oceanian models: 530 kHz – 1,710 kHz (with 10 kHz tuning

interval)

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

interval)

COMPACT DISC DECK RECEIVER

E Model

Other models: 530 kHz – 1,610 kHz (with 10 kHz tuning

interval)

531 kHz – 1,602 kHz (with 9 kHz tuning

interval) Antenna AM loop antenna, external antenna terminal Intermediate frequency 450 kHz

General

Power requirements Oceanian model: AC 230 V – 240 V,

50/60 Hz

Mexican model: AC 127 V, 60 Hz

Argentina model: AC 220 V, 50/60 Hz

Other models: AC 120 V, 220 V or

230 V – 240 V, 50/60 Hz, Adjustable with

voltage selector Power consumption MHC-GTR77: 260 W

MHC-GTR55: 250 W

MHC-GTR33: 280 W Dimensions (w/h/d) (excl. speakers) (Approx.) 231 mm × 361 mm × 429.5 mm Mass (excl. speakers) (Approx.) African and Pan Asian models:

HCD-GTR77/HCD-GTR55: 10.7 kg

HCD-GTR33: 10.5 kg Other models:

HCD-GTR77/HCD-GTR55: 10.2 kg

HCD-GTR33: 10.0 kg

Design and speciﬁ cations are subject to change without notice.

• Abbreviation

E4 : African model

9-890-541-01

2010C08-1

2010.03

©

Sony Corporation

Audio & Video Business Group Published by Sony EMCS (Malaysia) PG Tec

HCD-GTR33/GTR55/GTR77

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 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)

To Exposed Metal Parts on Set

AC

1.5 kΩ0.15 μF

Earth Ground

voltmeter (0.75 V)

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

CAUTION

Use of controls or adjustments or performance of procedures other than those speciﬁ ed herein may result in hazardous radia- tion exposure.

This appliance is classified as a CLASS 1 LASER product. This marking is located on the rear exterior.

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.

SERVICING NOTES

HCD-GTR33/GTR55/GTR77

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 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.

UNLEADED SOLDER

Boards requiring use of unleaded solder are printed with the leadfree 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.

MODEL IDENTIFICATION – Back Panel –

PART No.

Model Part No.

HCD-GTR33: E2, E51

HCD-GTR33: AR

HCD-GTR33: MX

HCD-GTR33: E4

HCD-GTR55: E2, E51

HCD-GTR55: AR

HCD-GTR55: MX

HCD-GTR55: E4

HCD-GTR77: E2, E51

HCD-GTR77: AR

HCD-GTR77: MX

HCD-GTR77: E4

• Abbreviation AR : Argentina model E2 : 120V AC area in E model E4 : African model E51 : Chilean and Peruvian models

MX : Mexican model

4-164-386-0[]

4-164-386-1[]

4-164-386-2[]

4-164-386-4[]

4-170-620-0[]

4-170-620-1[]

4-170-620-2[]

4-170-620-4[]

4-170-621-0[]

4-170-621-1[]

4-170-621-2[]

4-170-621-4[]

NOTE OF REPLACING THE IC102 ON THE DMB19 BOARD

IC102 on the DMB19 board cannot exchange with single. When this part is damaged, exchange the entire mounted board.

RELEASING THE DISC TRAY LOCK

The disc tray lock function for the antitheft of an demonstration disc in the store is equipped.

Releasing Procedure:

1. Press [I/

STANDBY] button to turn the power on.

1

2. Press the [CD] button to select CD function.

3. While pressing the [x] button, press the [Z OPEN/CLOSE] button for more 5 seconds).

4. The message “UNLOCKED” is displayed and the disc tray is unlocked.

Note: When “LOCKED” is displayed, the slot lock is not released by

turning power on/off with the [I/

STANDBY] button.

1

3

HCD-GTR33/GTR55/GTR77

a

HOW TO OPEN THE TRAY WHEN POWER SWITCH TURN OFF

Step: 1) Work after removing the case (side-R and side-L) referring to “2.2. CASE(SIDE-L/R)” on disassembly (page 5).

2) Work after removing the top case referring to “2-3. TOP CASE” on disassembly (page 6).

state of opening the CD tray

Turn a gear by

d

a driver till a lever rises up to the position of the figure. (Try to push gear at the

lever

same time slowly pull Front panel away.)

gear

b

c

e

c

HOW TO DISTINGUISH TAPE MECHANISM DECK

Two kinds of tape mechanism decks installed by this set exist.

Please do the repair exchange after conﬁ rming which tape mechanism deck set of the repair according to how to distinguish the ﬁ gure below.

tape deck

motor

Tape Deck Name Tape Deck Part No. Belt Part No.

CS-21SC-900TP 1-797-575-11

2-688-621-01 BELT (R/F)

2-688-622-01 BELT (MAIN)

Mold part: CS-21SC-900TP

4

DISASSEMBLY

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

2-1. DISASSEMBLY FLOW

SET

2-2. CASE (SIDE-L/R) (Page 5)

2-3. TOP CASE (Page 6)

HCD-GTR33/GTR55/GTR77

SECTION 2

2-5. FRONT PANEL BLOCK, HUB BOARD, DMB19 BOARD (Page 7)

2-6. DC FAN (M101), BACK PANEL (Page 7)

2-7. MAIN BOARD (Page 8)

2-8. POWER AMP BOARD (Page 8)

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

2-9. CHASSIS SECTION (Page 9)

2-10. CD MECHANISM BLOCK (CDM88BL-DVBU101) (Page 9)

2-11. OPTICAL PICK-UP BLOCK (KHM-313CAB) (Page 10)

2-2. CASE (SIDE-L/R)

2 three screws (BVTP3 u 8)

2-4. TAPE MECHANISM DECK (FOR AFRICAN MODEL ONLY) (Page 6)

2-12. BELT (DLM3A) (Page 10)

1 three screws

(case 3 TP2)

4 case (side-L)

3

Tape deck section (For African Model only)

3

2 three screws

(BVTP3 u 8)

4 case (side-R)

1 three screws

(case 3 TP2)

5

HCD-GTR33/GTR55/GTR77

2-3. TOP CASE

2 wire (flat type) (9 core) (CN450)

3 two claws

Tape deck section (For African Model only)

4 Lift up the back side of top case.

1 one screw (BVTP3 u 8)

5 top case

2-4. TAPE MECHANISM DECK (For African model only)

5 two screws (BVTP2.6 u8)

7 two screws (BVTP2.6 u8)

9 tape mechanism deck

6 bracket (deck)

4 TC board

3 two screws

(BVTP3 u 8)

1 CN501 (8P)

2 Cut the clamp.

top panel block

8 Open the cassette box.

6

2-5. FRONT PANEL BLOCK, HUB BOARD, DMB19 BOARD

wf DMB19 board: CN1105 (4P)/ HUB board: CN1500 (4P)

state of opening the CD tray

qs Turn a gear by a driver till a lever

lever

rises up to the position of the figure.

gear

qd Pull the tray by hand.

qa wire (flat type) (13 core) (CN410)

4 wire (flat type) (11 core) (CN403)

qh front panel block

3 one screw

(BVTP3 u 10)

qf panel loading

1 six screws

(BVTP3 × 8)

qk wire (flat type) (24 core) (CN101)

qj CD block

qg CN1501 (10P)

3 one screw

(BVTP3 × 10)

w; saranet cushion

ql CN201 (6P)

wd bracket

(ground hub)

5 wire (flat type) (23 core) (CN405)

6 CN470 (7P)

wa two screws

(BVTP3 u8)

ws HUB board

wh DMB19 board

HCD-GTR33/GTR55/GTR77

q; CN1502 (7P)

8 DMB19 board:

CN601 (9P)

9 wire (flat type) (7 core) (CN4602)

2 two screws (BVTP3 u10)

wg four screws (BVTP3 u8)

7 wire (flat type) (9 core) (CN1106)

2-6. DC FAN (M101), BACK PANEL

8 CN690 (3P)

qj tuner (FM/AM)

wa back panel

ql clamp filter

(ferrite core)

qa CN901 (3P)

qk binding band (taiton)

q; wire (flat type) (9 core)

(CN220)

9 DC fan

qg

w; cord bush

7 two screws

(BVTP3 u 10)

qh two screws (BVTT3 u 6)

qf one screw (BVTP3 u 8)

qd one screw (BVTP3 u 8)

qs two screws (BVTP3 u 8)

2 three screws (BVTP3 u 8)

3 one screw (BVTP3 u 8)

6 power cord

5 cover (fan)

4 one screw

(BVTP3 u 8)

1 three screws (BVTP3 u 8)

7

HCD-GTR33/GTR55/GTR77

2-7. MAIN BOARD

2 CN907 (11P)

4 MAIN board

3 CN479 (13P)

2-8. POWER BOARD

5 CN908 (7P)

(for HCD-GTR55/GTR77 only) CN909 (5P) (for HCD-GTR33 only)

1 one screw (BVTP3 u 8)

2 clamp

6 one screw

(BVTP3 u 8)

4 two screws (transistor)

1 two screws (BVTP3 u 8)

q; heat sink

7 one screw

(BVTP3 u 8)

3 two screws (BVTP3 u 10)

qs bracket (HS Support)

qa one screw

(BVTP3 u 8)

9 two screws (BVTP3 u 8)

8 POWER board

8

2-9. CHASSIS SECTION

1 two screws (BVTP3 u8)

HCD-GTR33/GTR55/GTR77

2

1 two screws

(BVTP3 u8)

3 chassis block

2-10. CD MECHANISM BLOCK (CDM88BL-DVBU101)

8 two screws (BVTP3 u10)

qs cushion DVD

q; CD mechanism block

(CDM88BL-DVBU101)

7 three sheets (CDM)

1 wire (flat type) (13 core)

(MOTOR board)

qa sheets (CDM)

9 cover dust (CDM88-A-top)

8 one screw

(BVTP3 u 10)

3 bracket (MTK)

2 one screw (BVTP3 u8)

4

5 cover (shutter)

6 cover dust (CDM88-A-BTM)

9

HCD-GTR33/GTR55/GTR77

2-11. OPTICAL PICK-UP BLOCK (KHM-313CAB)

CD mechanism block (CDM88BL-DVBU101)

4 two insulator screws

2-12. BELT (DLM3A)

position of belt

4 two insulator screws

5 two insulators

belt

5 two insulators

7 optical pick-up block

(KHM-313CAB)

3 connector

6 holder BU

1 four screws

(BVTP2.6)

2 wire (flat type) (24 core)

belt

two belts (DLM3A)

4

3

cover

four screws

2

state of opening the CD tray

1 Turn a gear till a lever rises up to the position of the figure.

lever

gear

10

SECTION 3

TEST MODE

HCD-GTR33/GTR55/GTR77

PANEL TEST MODE

This mode is used to check the ﬂ uorescent indicator tube, LEDs, keys, [MASTER VOLUME] jog, [OPERATION DIAL] jog, model, destination and software version.

Procedure:

1. Press [x] button, [METER MODE] button and [DISC SKIP/ EX-CHANGE] button simultaneously.

2. All LEDs and segments in ﬂ uorescent indicator tube are light- ed up.

3. When you want to enter to the software version display mode, press [DISC 1] button. The model information appears on the ﬂ uorescent indicator tube.

• “GVX 1S” is shown for MHC-GTR33.

• “GVX 3S” is shown for MHC-GTR55.

• “GVX 4S” is shown for MHC-GTR77.

Press [DISC 1] button again to view the destination informa-

tion.

4. During the destination information display, press [DISC 1] button. Each time [DISC 1] button is pressed, the ﬂ uorescent indicator tube shows the version of each category software in the following sequence: SC, MTK (DMB Board ﬁ rmware ver- sion), GC, SYS, CD, CDMA, CDMB, ST, TC TA, TM , MTR (METER) and return back to model information display.

5. When [DISC 3] button is pressed while the version numbers are being displayed except model and destination, the date of the software creation appears. When [DISC 3] button is pressed again, the display returns to the software version display. When [DISC 1] button is pressed while the date of the software creation is being displayed, the date of the software creation is displayed in the same order of software version display.

6. Press [DISC 2] button, the key check mode is activated.

7. In the key check mode, the ﬂ uorescent indicator tube displays “K 0 V0”.

Each time a button is pressed, “K” value increases. However,

once a button has been pressed, it is no longer taken into account.

“V” value increases in the manner of 0,1, 2, 3 ... if [MASTER

VOLUME] knob is turned clockwise, or it decreases in the manner of 0, 9, 8,7 ... if [MASTER VOLUME] knob is turned counterclockwise.

8. When [DISC SKIP/EX-CHANGE] button is pressed after all LEDs and segments in ﬂ uorescent indicator tube light up, al- ternate segments in ﬂ uorescent indicator tube and LEDs would light up. If you press [DISC SKIP/EX-CHANGE] button again, another half of alternate segments in ﬂ uorescent indi- cator tube and LEDs would light up. Pressing [DISC SKIP/ EX-CHANGE] button again would cause all segments in ﬂ uo- rescent indicator tube and LEDs light up.

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

2. Press [EQ BAND/SURROUND] button repeatedly until a message “GEQ MIN” appears on the ﬂ uorescent indicator tube. GEQ decreases to its minimum.

3. Press [EQ BAND/SURROUND] button repeatedly until a message “GEQ FLAT” appears on the ﬂ uorescent indicator tube. GEQ is set to ﬂ at.

4. When the [MASTER VOLUME] knob is turned clockwise even slightly, the sound volume increases to its maximum and a message “VOLUME MAX” appears on the ﬂ uorescent indi- cator tube.

5. When the [MASTER VOLUME] knob is turned counterclockwise even slightly, the sound volume decreases to its minimum and a message “VOLUME MIN” appears on the ﬂ uorescent indicator tube.

To release from Common Test mode

1. To release from this mode, press [

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

STANDBY] button.

?/1

COLD RESET

The cold reset clears all data including preset data stored in the EEPROM to initial conditions. Execute this mode when returning the set to the customer.

Procedure:

1. Press [

2. Press [x] button, [ENTER] button, and [ ton simultaneously.

3. “COLD RESET” appears on the ﬂ uorescent indicator tube. After that, the ﬂ uorescent indicator tube becomes blank for a while, and the system is reset.

STANDBY] button to turn on the system.

?/1

STANDBY] but-

VACS ON/OFF

This mode is used to switch ON and OFF the VACS (Variable Attenuation Control System).

Procedure:

1. Press [

2. Press [x] button, [RETURN], and [DISPLAY] button simultaneously. The message “VACS OFF” or “VACS ON” appears on the ﬂ uorescent indicator tube.

STANDBY] button to turn on the system.

?/1

TUNER STEP CHANGE

The step interval of AM channels can be toggled between 9 kHz and 10 kHz.

Procedure:

1. Press [

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

3. Press [

4. Press [ENTER] button and [ neously. The system turns on automatically. The message “AM 9K STEP” or “AM 10K STEP” appears on the ﬂ uorescent indicator tube and thus the channel step is changed.

STANDBY] button to turn on the system.

?/1

STANDBY] button to turn off the system.

?/1

STANDBY] button simulta-

?/1

COMMON TEST MODE

This mode is used to check operations of the Ampliﬁ er section.

Procedure: To enter Common Test Mode

1. Press [ CLOSE] button simultaneously.

2. The CD ring indicators ﬂ ash on the ﬂ uorescent indicator tube. The function is changed to AUDIO and the volume is changed to VOLUME MIN.

Check of Ampliﬁ er

1. Press [EQ BAND/SURROUND] button repeatedly until a message “GEQ MAX” appears on the ﬂ uorescent indicator tube. GEQ increases to its maximum.

] button, [METER MODE] button and [OPEN/

x

CD 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 EEPROM to initial conditions during the next AC-In. Use this mode when returning the set to the customer after repair.

Procedure:

1. Press [

2. Select CD function.

3. Press [x] button, [OPEN/CLOSE] button and [

BY] button simultaneously. The system turns off automatically.

4. After the “STANDBY” blinking display ﬁ nishes, a message “MECHA LOCK” is displayed on the ﬂ uorescent indicator tube and the CD ship mode is set.

STANDBY] button to turn on the system.

?/1

STAND-

11

HCD-GTR33/GTR55/GTR77

CD 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 [

2. Select CD function.

3. Press [DISC SKIP/EX-CHANGE] button and [ BY] button simultaneously. The system turns off automatically.

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

“MECHA LOCK” is displayed on the ﬂ uorescent indicator

tube and the CD ship mode is set.

STANDBY] button to turn on the system.

?/1

STAND-

CD TRAY LOCK MODE

This mode let you lock the disc tray. When this mode is activated, the disc tray will not open when [OPEN/CLOSE] button or [DISC SKIP/EX-CHANGE] button is pressed. The message “LOCKED” will be displayed on the ﬂ uorescent indicator tube. This mode only applied when there is disc(s) on the tray.

Procedure:

1. Press [

2. Select CD function.

3. Press [x] button and [OPEN/CLOSE] button simultaneously and hold down until “LOCKED” or “UNLOCKED” displayed on the ﬂ uorescent indicator tube (around 5 seconds).

STANDBY] button to turn on the system.

?/1

FACTORY PRESET

This mode is use to load all the factory use preset frequencies into FM 1-FM 20 and AM 1-AM 10. Originally, frequency of FM 1-FM 20 and AM 1-AM10 are set to the minimum frequency.

Procedure:

1. Press [

2. Press [EQ BAND/SURROUND] button, [x] button, and [DISC 1] button simultaneously and the message “FACTORY” appears on the ﬂ uorescent indicator tube. The function is changed to TUNER automatically.

STANDBY] button to turn on the system.

?/1

VACS DISPLAY

This mode is used to check the VACS level.

Procedure:

1. Press [

2. Press [ERASE] button, [x] button and [ENTER] button simultaneously.

3. The ﬂ uorescent indicator tube displays “V0 AP0”.

“V” represents Conventional VACS (Triggered by signal level)

“AP” represents AP VACS (Abuse Protection Variable Attenuation Control System)

• To release from VACS display mode

To release from this mode, do the step (2) again.

STANDBY] button to turn on the system.

?/1

METER SWITCH TOUCH COUNT DISPLAY

This mode is used to display the total count of meter pointer touch initial switch and max switch.

Procedure:

1. Press [

2. Press [x] button, [ENTER] button and [DISPLAY] button simultaneously.

3. The ﬂ uorescent indicator tube displays “IxxxxxMyyyyy”.

“I” represents the Initial Switch touch. “xxxxx” represents the total count of Initial Switch touch. (Maximum Value of “xxxxx” = 65535) “M” represents the Max Switch touch. “yyyyy” represents the total count of Max Switch touch. (Maximum Value of “yyyyy” = 65535)

• To release from Meter Switch Touch Count Display Mode.

To release from this mode, do the step (2) again. The ﬂ uorescent indicator tube displays “MODE OUT”.

STANDBY] button to turn on the system.

?/1

METER TEST MODE

This mode is used to check the meter device.

Procedure:

1. Press [

2. Press [x] button, [ENTER] button and [METER MODE] but-

ton simultaneously.

3. Meter Backlight LEDs, Meter Pointer LEDs, Power Illuminator LEDs and ﬂ uorescent indicator tube are lighted up.

4. When you want to perform count total step from Initial Switch to Max Switch operation mode, press [M / > / TUNING + ] button. The meter pointer will move from Initial Switch to Max Switch and ﬁ nally move back to the middle position. The total step count information appears on the ﬂ uo- rescent indicator tube. “xxx STP yy” is shown.

“xxx” represents the total step. (Value of “xxx” should between 430 steps to 470 steps) “yy” represents the status of total step count. (If total step between 430 steps to 470 steps, “yy” is OK, Else “yy” is NG)

5. When you want to perform count total step from Max Switch to Initial Switch operation mode, press [m / . / TUNING – ] button. The meter pointer will move from Max Switch to Initial Switch and ﬁ nally move back to the middle position. The total step count information appears on the ﬂ uo- rescent indicator tube. “xxx STP yy” is shown.

“xxx” represents the total step. (Value of “xxx” should between 430 steps to 470 steps) “yy” represents the status of total step count. (If total step between 430 steps to 470 steps, “yy” is OK, else “yy” is NG)

• To release from Meter Test Mode.

To release from this mode, do the step (2) again. The ﬂ uorescent indicator tube displays “TST MODE OUT”.

STANDBY] button to turn on the system.

?/1

CDM AGING MODE

This mode is used to display the total count of all disc playing.

Procedure:

1. Press [

2. Select CD function and All DISC play mode

3. Put discs on all trays and close the tray.

4. Press [GROOVE] button, [x] button and [RETURN] button simultaneously.

5. The ﬂ uorescent indicator tube displays Aging Display “AG xxxx/yyyy”.

“xxxx” represents the error counter (Maximum Value of “xxxx” = 9999) “yyyyy” represents the cycle counter (Maximum Value of “yyyy” = 9999)

6. Press [m / . / TUNING – ] or [M / > / TUNING + ] to search for Aging History Error Display

The ﬂ uorescent indicator tube displays “Mx E1E2E3E4”. x: error history number E1: Loading sequence JCP high E2: Loading sequence JCP low E3: Loading operation JCP E4: Cam position operation JCP

7. Press [RETURN] to Aging Display

• To release from CDM Aging Mode.

To release from this mode, press [

perform COLD RESET operation.

STANDBY] button to turn on the system.

?/1

STANDBY] button or

?/1

12

SECTION 4

MECHANICAL ADJUSTMENTS

(For African model only) PRECAUTION

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

record/playback head pinch roller erase head rubber belts capstan idlers

2. Demagnetize the record/playback head with a head demagnetizer. (Do not bring the head magnetizer close to the erase head.)

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-102AS

FWD Back Tension

FF CQ-201AS

REV CQ-201B

CQ-102C

2.0 – 8.0 mN • m (20 to 80 g • cm)

(0.28 – 1.12 oz • inch)

0.15 – 0.6 mN • m (1.5 to 6 g • cm)

(0.021 – 0.083 oz • inch)

5 – 17.7 mN • m

(50 to 177 g • cm)

(0.7 – 2.48 oz • inch)

5 – 17.7 mN • m

(50 to 177 g • cm)

(0.7 – 2.48 oz • inch)

HCD-GTR33/GTR55/GTR77

• Tape Tension Measurement

Mode Tension Meter Meter Reading

FWD CQ-403A

more than 80 g

(more than 2.82 oz)

13

HCD-GTR33/GTR55/GTR77

SECTION 5

ELECTRICAL CHECK

TUNER SECTION

FM TUNE LEVEL CHECK

signal

generator

set

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 dBu (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.

3. Mode: Playback

test tape P-4-A063 (6.3 kHz, 10 dB)

in phase 45q 90q 135q 180q

MIC board PHONES jack (J702)

set

waveform of oscilloscope

good

oscilloscope

V

wrong

H

4. After the adjustments, apply suitable locking compound to the pats adjusted.

Adjustment Location: Record/Playback/Erase Head

DECK SECTION 0dB = 0.775V

(For African model only)

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

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

TEST TAPE

Tape Signal Used for

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

RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT Procedure:

1. Mode: Playback

test tape P-4-A063 (6.3 kHz, 10 dB)

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.

MIC board PHONES jack (J702)

set

level meter

+ –

L-CH peak

Screw position

14

R-CH peak

Output level

within 1 dB

L-CH peak

R-CH peak

within 1 dB

Screw position

HCD-GTR33/GTR55/GTR77

1515

6-1. BLOCK DIAGRAM - RF SERVO, USB Section -

SECTION 6

DIAGRAMS

OPTICAL PICK-UP

BLOCK

RF AMP, SERVO DSP,

AUDIO PROCESSOR

IC101

SYSTEM

CONTROLLER

IC401 (1/4)

FOCUS/TRACKING COIL DRIVE,

SPINDLE/SLED MOTOR DRIVE

IC201

AUTOMATIC POWER

CONTROL

Q102-1

RF_IP

125

RF_C

3

RF_B

2

RF_A

1

RF_D

4

RF

VOA/A VOB/B VOC/C VOD/D

RF_F6VOE/E+G RF_E5VOF/F+H

V2O12VC

LDO117LD (780)

AUTOMATIC POWER

CONTROL

Q102-2

LDO2

18LD (650)

FOO25

CD ON

SWITCH

Q101-1

CD ON

SWITCH

Q101-2

VR (780)

MSW

GPIO

23

118

VR (650)

FCS+

MSW

MDI115 MDI216

PD

LIMIT

Q103

SF_CS#CS_

SD-RAM

IC104

X101

27MHz

36

FCS– 37

1

TRO24

TRK+ 35 TRK– 34

4

FMO21

SL+ 29 SL– 30

10

DMO20

SP+ 27 SP– 28

31 32

41

46 47

13

SPFG/OPINN128

45

GPIO GPIO GPIO

120

DG0, DQ1 – DQ15

RD0 – RD15

PRST #

A0 – A11

RA0 – RA11

2, 4, 5, 7, 8, 10, 11, 13, 42,

44, 45, 47, 48, 50, 51, 53

45 – 49, 51 – 53,

64 – 61, 56 – 59

82, 83, 85, 86,

74 – 69, 81, 67

23 – 26,

29 – 34, 22, 35

36

XTALI

9

1

SF_CKSCK

39

6

BA0 BA0

78

20

BA1 BA1

80

21

RCLK CLK

66

38

DQM0 LDQM

55

15

DQM1 UDQM

65

39

RAS# RAS

77

18

CAS# CAS

76

17

RWE# WE

75

16

: CD PLAY

: AUDIO

: USB

FOCUS

COIL DRIVE

TRACKING

COIL DRIVE

SLED

MOTOR DRIVE

SPINDLE

MOTOR DRIVE

REGULATOR

GPIOMUTE123 116

19

6

7

MUTE4MUTE4 22

20

GPIOTSD-M 94

22

IOPMON/ OPINP

127

40

8

PS

21

BUFFER

RF +3.3V

43

REGO2

REGO1

REGO2

REGO1

(KHM-313CAB)

FLASH ROM

IC102

XTALO

10

L-OUT

115 119

GPIO

114

GPIO19

106

VINL

14

13

VINR

BCK

7

LRCK

6

8

SCKI

A/D CONVERTER

IC4601

9

DOUT

REC_L

R-CH

USB CONTROLLER

IC1501

31

USBUP_DP

30

USBUP_DM

AOUT-L

5

8

AOUT-R

D/A CONVERTER

IC4602

1

SDATA

2

SCLK

3

LRCK

4

MCLK

USB_DP 27

R-CH

USB_DM 28

SO

2SI5

SF_DO37SF_DI

38

CD MECHANISM

DECK

M1-

M2+ M2-

M1+

21

M1- 18

M2+

7

M2- 6

MOTOR

DRIVE

Q645 - 648

MOTOR

DRIVE

Q640, 641,

Q643, 644

SW3

SW2 SW7-CHACK

SW1

23

SW3

22

SW2 25

SW-CHUCK

24

SW5-STOCK

SW8-OPEN

SW6-CLOSE

SW-STOCK

27

SW-CLOSE

26

SW-OPEN 28

2USBDN1_DP

1USBDN1_DM

73MTK-OC2

CN1001

3

2

1

D+

D–

68MTK-OC1

VBUS

VBUS OVER

CURRENT DETECT

IC1500

4USBDN2_DP

3USBDN2_DM

3

2

1

D+

D–

VBUS

MTK-RST48

MTK-TX

35

MTK-RX

36

MTK-CLOCK

37

MTK-XIFCS

34

MTK-BUSY

19

IFSDI

35

IFSOD

41

IFSCK

40

IFCS#

88

IFBSY

87

HUB_RST47 VBus_Det

57

VBUS_DET27 RESET_N

26

X1500

24MHz

XTAL1/ CLKIN

33

XTAL2

32

USB +5V

PLAY A

REC/PLAY B

CN1000

SIGNAL PATH

R-ch is omitted due to same as L-ch.

OPOUT126

1

7

3

5

A

(Page 16)

B

(Page 16)

HCD-GTR33/GTR55/GTR77

1616

6-2. BLOCK DIAGRAM - MAIN Section -

R-CH

TUNER (FM/AM)

AM

FM ANT

AM ANT

ST-L

ST-R

ST-DOUT

R-CH

(E4)

R-CH

ST-DIN

ST-CLK

ST-CE

FM75:

COAXIAL

ANTENNA

TUNED

61 ST-TUNED

43 ST-L

56 ST-R

45 TAPE L

54 TAPE R

36 REC BL

7 REC BR

21

DATA22CLK

4230AUX-L

46 MIC

29 VOLINLTONEOUTL 26OUTL

44 CD-L

67 ST-DOUT

66 ST-CLK 63 ST-CE

R2A15216FP-DATA

60

TC REC MUTE

41

TP STATE

70

9

SA2

POWER ILLUMINATOR

71

VACS IN

89

R2A15216FP-CLK

59

HP/MIC DET

66

23SWOUT

28BB1L

37RECAL

BAND-PASS

FILTER

Q115

27

19

17

18

BB2L

BASS AGC

Q128

BASS AGC

Q178

D630

INPUT SELECTOR,

ELECTRICAL VOLUME

IC407

SYSTEM CONTROLLER

IC401 (2/4)

: AUDIO

SIGNAL PATH

R-ch is omitted due to same as L-ch.

: TUNER (FM/AM)

J700

MIC

RV700

MIC LEVEL

IC700 MIC AMP

65 ST-DIN

R

L

J120

PC IN

L-OUT

REC-L

HP DET

OUT

SW OUT

BASS AGC

: MIC

: TAPE (PLAY)

: TAPE (REC)

R-CH

1375

R-CH

Q682

75

57

R-CH

L501

S501

IC502

IC501

OP AMP

MUTE

SW

Q683

MUTE

SW

BIAS OSC Q501, 502

R-CH

EH

VREF

SW

L-CH

TAPE DECK

A

(Page 15)

13X-OUT

15X-IN

X402

8MHz

11XC-OUT

10XC-IN

X401

32.768kHz

Abbreviation E4 : African model

J

(Page 17)

B

(Page 15)

D

(Page 17)

E

(Page 17)

F

(Page 17)

HCD-GTR33/GTR55/GTR77

1717

6-3. BLOCK DIAGRAM - AMP Section -

LINE AMP

IC252

POWER

AMP

IC800

MUTING

Q402

OVER LOAD

DETECT

Q801

OVER LOAD

DETECT

Q800

OVER LOAD

DETECT

Q802

R-CH

MUTING

Q430

LINE AMP

IC253

–1

–2

MUTING

CONTROL

Q670

LINE MUTE

58

STK MUTE

51

17

20 22

1913 10

SW SPK RELAY

52

FAN M OTOR

DRIVE

Q697, 699

RY800

+ – – +

RY500

D807

TH802

M

M101 (FAN)

PHONES

+ –

SUBWOOFER

JK500

RELAY DRIVE

Q500

FR SPK RELAY

53

PROTECT

50

RELAY DRIVE

Q502

R-CH

J702

SYSTEM CONTROLLER

IC401 (3/4)

: AUDIO

SIGNAL PATH

R-ch is omitted due to same as L-ch.

DC

DETECT

Q803, 806

THERMAL

DETECTOR

Q807, 808

R

L

FRONT

SPEAKER

JK800

+ – – +

R

L

SATELLITE

SPEAKER

JK801

FAN ON/OFF

38

BASS AGC

HP DET

OUT

SW OUT

BUFFER

Q431

AC CUT

DETECT

Q501

PROTECT DETECT

Q809, 811

AC DETECT

PROTECT

(GTR77)

(GTR33/55)

MUTING

Q425

15

8

J

(Page 16)

F

(Page 16)

D

(Page 16)

E

(Page 16)

G

(Page 18)

+ –

JK501

H

(Page 18)

HCD-GTR33/GTR55/GTR77

1818

6-4. BLOCK DIAGRAM - PANEL, POWER SUPPLY Section -

REMOTE CONTROL

RECEIVER

IC1100

FL1100

FLUORESCENT

INDICATOR

TUBE

94 SW/USB CTRL

FLUORESCENT INDICATOR

TUBE DRIVER

IC1101

SYSTEM CONTROLLER

IC401 (4/4)

F955

(MX)

(EXCEPT MX)

R955

RECT D902, 903 D904, 905

PROTECT

DETECT

Q606

RECT

D610 – 613

LED-VOL1. 2 LED-VOL3. 4

LED-VOL5. 6

S1100 – 1109,

S1110 – 1119,

S1124 – 1133,

S1302

54STBY RELAY

RESET SWITCH

Q210, 214, 215

D213

+3.3V

FL +3.3V

83OVERVOLTAGE

20AC CUT

12RESET

85 MASTER VOL

SG5/KS5 – SG24/KS24

14 – 33

D1105 – 1107, SEL A D1108 – 1110, SEL B

(STREAM)

LED DRIVE

Q1122

80 USB-LED CTRL

LED DRIVE

Q1121

D1104

SUBWOOFER

95 STBY LED

AD KEY0

4 SIRCS

D1011

I/1

STANDBY

ROTARY

ENCODER

MASTER VOLUME

S1301

DIN

FL-DRIVER-DATA2 3

CLK

FL-DRIVER-CLK1 2

STB

FL-DRIVER-CS3 1

86 91 90

74 97 87 84

POWER/DISPLAY-KEY AD-KEY0

AD-KEY1

AD-KEY2

(AC IN)

RY901

RELAY DRIVE

Q903

VOLTAGE

SELECTOR

S901

DVDD +3.3V

D607D628

D623, 624

FAN

+12V

D908

TUNER +9V,

A+9V

A+9V M+9V

F956 RECT D601

F952 F953

F951 F953

RECT

D800

D608

+9V

REGULATOR

IC678

+9V

REGULATOR

IC602

AVDD +5V

+5V

REGULATOR

Q696

VM+9V

+3.3V

REGULATOR

IC603

+4V

REGULATOR

Q211, 212

LED SEL A,

LED SEL B

CD MECHANISM

MOTOR B+

REGULATOR

Q655 – 658

69LED CTRL

5CDM-SD

JOG B+

43AD SUPPLY SW

B+ SWITCH

Q627, 628

–32V

REGULATOR

Q902

AMP

SECTION

B+

FOR

FLUORESCENT

INDICATOR

TUBE

–VFL

VF VF

PT902

SUB POWER

TRANSFORMER

PT901

MAIN POWER

TRANSFORMER

VCC +3.3V

EVER +3.3V

+VH –VH

D1002, 1003

PROTECT

(E2, E51, E4)

(MX, AR)

AC DETECT

GR1 – GR14

34 – 47

LED DRIVE

Q1118 – 1120

USB B

D1000

USB A

AVDD +1.8V

82

MTK POWER

MONITOR

RF +3.3V

+5V

REGULATOR

IC677

45MTK OE

USB +5V

(GTR55/77)

D651

METER +5V

+5V

REGULATOR

Q698

D505, 502

B+ SWITCH Q300 – 303

31

METER LED CTRL

METER

DISPLAY

BLOCK

RECT

D906, 907

+1.8V

REGULATOR

IC 111

+3.3V

REGULATOR

IC107

39 METER BL CTL

LED DRIVE

Q230

LED SEL A

LED SEL B

LED

LED DRIVE

Q231

81 METER SW

72 METER-IN4

77 METER-IN3

79 METER-IN2

METER-IN1

(GTR55/77)

78

+9V

SWITCH

Q684

M+9V

(E4)

RECT

D801

+VL –VL

POWER

CONTROL

Q673

SW DRIVER

Q681

49TC_M+9V SW

+12V REG

IC600

(GTR55/77)

G

(Page 17)

H

(Page 17)

Abbreviation AR : Argentina model E2 : 120V AC area in E model E4 : African model E51 : Chilean and Peruvian models MX : Mexican model

HCD-GTR33/GTR55/GTR77

1919

• Circuit Boards Location

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. (p: pF) 50

WV or less are not indicated except for electrolytics and tantalums.

• All resistors are in Ω and 1/4 W or less unless otherwise

speciﬁ ed.

• f : Internal component.

• 2 : Nonﬂ ammable resistor.

• 5 : Fusible resistor.

• C : Panel designation.

• A : B+ Line.

• B : B– Line.

• Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions.

- TC Board -

no mark : TAPE PLAY ( ) : TAPE REC

- Other Boards -

no mark : TUNER (FM/AM) ( ) : CD PLAY << >> : TAPE PLAY [ ] : TAPE REC < > : USB { } : PC * : Impossible to measure

• Voltages are taken with VOM (Input impedance 10 M).

Voltage variations may be noted due to normal production

tolerances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal production

tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F : AUDIO f : TUNER (FM/AM) d : TAPE PLAY G : TAPE REC N : MIC J : CD PLAY c : DIGITAL E : USB

• Abbreviation

AR : Argentina model E2 : 120V AC area in E model E4 : African model E51 : Chilean and Peruvian models MX : Mexican model

For Printed Wiring Boards.

Note:

• X : Parts extracted from the component side.

• Y : Parts extracted from the conductor side.

• f : Internal component.

• : Pattern from the side which enables seeing. (The other layers’ patterns are not indicated.)

• Indication of transistor.

CEB

These are omitted.

Caution:

Pattern face side: (SIDE B) Parts face side: (SIDE A)

Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.

Note: The components identiﬁ ed by mark 0 or dotted

line with mark 0 are critical for safety.

Replace only with part number speciﬁ ed.

Caution:

Pattern face side: (Conductor Side) Parts face side: (Component Side)

Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.

• DMB19 board is multi-layer printed board. However, the patterns of intermediate layers have not

been included in diagrams.

• Abbreviation AR : Argentina model E2 : 120V AC area in E model E4 : African model E51 : Chilean and Peruvian models

MX : Mexican model

C

Q

B

E

These are omitted.

LED (GVX) board included in METER DISPLAY ASSY (GTR55/GTR77) included in DISPLAY PANEL (GVX1) ASSY (GTR33)

SW (GVX) board included in METER DISPLAY ASSY (GTR55/GTR77)

TC board (For African Model only)

TRANS board

HUB board

MOTOR DRIVE board included in METER DISPLAY ASSY (GTR55/GTR77)

MAIN board

POWER board

DMB19 board

TUNER (FM/AM)

VOL board

USB board

MIC board

DISPLAY board

HCD-GTR33/GTR55/GTR77

2020

6-5. PRINTED WIRING BOARD - DMB19 Board -

Note: When IC102 cannot exchange with single. When this part

is damaged, exchange the entire mounted board.

• See page 19 for Circuit Boards Location.

•

: Uses unleaded solder.

1 2 3 4 5 6 7 8 9 10 11 14 1512 13

A

B

C

D

E

F

G

H

I

J

DMB19 BOARD (COMPONENT SIDE) DMB19 BOARD (CONDUCTOR SIDE)

1-881-688-

11

(11)

1-881-688-

11

(11)

1

12

13

48

24

25

36

37

IC201

IC4601

IC4602

IC107

R1177

C144

C156

IC111

R4833

R4834

C4603

C4606

C4602

R4606

R4605

R4602

R4608

R4609

R4611

C4623

C4622

C502

C4626

R521

R606

IO

FL603

FB603

C215

R233

C212 C214

R226

C211

R220

C233

R212

R225

R221

C209

R223

C219

C224

R608

FB607

R234

R214

C205

R208

R206

R215

C206

R209

C203

R207

R204

R205

R213

R216

C208

R210

E1

E

E2

R115

R112 R113

R120

R121

R118

R109

R110

R123

R256

R124

Q103

Q102

S2

S1

Q101

R116

R117

R111

R108

R1129

C149

FB108

C179

C180

C191

C181

R122

C1505

R125

C155

C125

R1255

C111

C115

C116

C119

C168

C169

R1101

C172

R1150

C150

C175

C151

R1193

R1191

R1194

R1192

R1252

C102

R219

C213

R224

C210

R136

R1184

C195

C192

C193

C154

C145

C146

C127

C126

C108

C1506

C198

C183

R1178

C188

CL201

CL202

R4835

D005

R1261

R133

C197

R1250

FB1268

FB1267

R1262

R101

CL205

CL204

C1507

C199

C221

C222

C1512

C1513

R1256

R630

R1278

R1279

R1280

IC102

X101

IC101

1

5

1

9

CN601

CN101

CN4602

R103

C603

C1504

C604

RB105

R605

CN1105

CN105

C105

RB106

RB107

R107

RB108

C4608

C608

1

13

R1110

RB111

C112

R1114

C217

C118

R1121 R1123

C124

R142

R243

R246

R247

R1248

R1249

C152

C153

R156

C160

R1168

C190

CN201

C623

D004

C622

D003

D002

C621

D001

C620

C611

R231

R230

R232

C216

C101

R102

C602

RB112

RB113

RB114

RB115

R1263

JL1213

JL1212

JL1203

JL1206

JL1201

JL1207

JL1202

JL1204

JL1211

JL1209

JL1208

JL1210

JL1205

JL1134

JL1131

JL1132

JL1133

CL1138

CL1139

JL115

JL114

JL113

CL1148

CL1140

CL1141

CL1142

CL1149

CL1147

CL1146

CL108

CL109

CL1151

CL1150

JL1220

JL1218

JL1216

JL1214

CL213

JL215

JL214

JL213

JL212

JL014

CL105

JL010

JL007

JL004

JL006

JL005

JL003

JL002

JL001

JL1106

JL1102

JL1108

JL111 2

JL111 4

JL111 0

JL111 6

JL111 8

JL1120

JL111 5

JL111 3

JL1111

JL1105

JL1107

JL111 7

JL111 9

JL1121

JL1123

JL1122

JL1124

R1151

R1152

JL202

JL205

JL206

JL203

CL107

JL210

CL206

CL207

CL208

JL1101

R1269

JL012

JL016

JL211

JL201

CL106

R114

C106

C113

CN1106

FB1264

R1275

CL1152

R4837

R4838

IC104

R1277

R1276

JL017

ET004

FB1265

FB1266

ET001

ET002

ET003

R4601

C218

C220

C1514

C1515

C1516

R1281

R1282

R1283

K

MAIN BOARD

CN601

(Page 24)

L

MAIN BOARD

CN692

(Page 24)

DEVICE, OPTICAL

KHM-313CAB/C2NP

MAIN BOARD

CN691

(PAGE 24)

M

HUB BOARD

CN1500

(PAGE 28)

E

DEVICE, OPTICAL

KHM-313CAB/C2NP

HCD-GTR33/GTR55/GTR77

2121

• See page 39 for Waveforms. • See page 40 for IC Block Diagrams. • See page 44 for IC Pin Function Description.

6-6. SCHEMATIC DIAGRAM - DMB19 Board (1/3) -

Note: When IC102 cannot exchange with single. When this part

is damaged, exchange the entire mounted board.

1 2 3 4 5 6 7 8 9 10 11 14 1512 13

A

B

C

D

E

F

G

H

I

J

3.2 5.0

3.4

1.5

1.9

0.63.2

3.2

2.1

2.0

1.8

3.4

0.9

2.1

1.5

0.6

0

3.3(2.5)

3.4

1.5(2.2)

1.5

3.4

0

1.5

3.4

2.9

0

3.2

0.8

1.9

1.5

2.3

3.2

0

0(1.4)

0

3.2

0

3.2

0

2.5

3.1

3.2

1.9

3.2

3.4

0

3.2

*

0.4

1.3

0.2

1.1

3.2

0.1

3.3

0

0(1)

0(1.2)

3.2

000

1.9

3.2

0000000

0(1.1)

1.3

3.4

1.300

3.4

1.8

1.6

1.7

3.300

1.7

3.4

1.9

112.7

1.5

1

2

3

4

5

6

6P

CN105

TXD

RXD

GND

+3.3V

V2REFO

RFMON

47k

R124

3.3k

R1151

0.01

C192

0.1

C179

100

R156

22

R112

2.7kR1110

100k

R114

0.1

C116

100

R109

0.01

C113

22R115

100

R101

10k

R107

10V

47

C105

0.22

C195

47k

R117

1k

R116

1

C124

3.3k

R1150

0.01

C101

22

R121

0.1

C115

10V

47

C112

1M

R108

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

CN101

24P

GND (LD)

LD (650)

NC

PD

LD (780)

VR (650)

VR (780)

NC

VOE/E+G

VCC

VC

GND (PDIC)

VOF/F+H

VOB/B

VOA/A

RF

(LO:DVD.HI:CD)MSW

VOD/D

VOC/C

TRK-

TRK+

FCS+

FCS-

0.01

C106

3.3k

R1152

22R113

100

R123

10V

100

C190

47kR110

0.22

C193

22R118

RT1N241C-TP-1

Q103

0.01

C160

22

R120

0.1

C191

100k

R1129

15k

R136

100

R111

0.1

C197

0.01

C144

0.1

C180

C169

0.1

D1

G2

S2

D2

G1

S1

UM6K1N-TN

Q101

Q102

QST8TR

JL1101

JL1102

JL1105

JL1106

JL1107

JL1108

JL1110

JL1111

JL1112

JL1113

JL1114

JL1115

JL1116

JL1117

JL1118

JL1119

JL1120

JL1121

JL1122

JL1123

JL1124

JL1207

JL1205

JL1204

JL1203

JL1202

JL1201

CL106

CL107

REG01

TRK-

TRK+

FCS+

FCS-

REG02

TRO

IOP

FOO

IOPMON

SPFG

TSD_M

DMO

ALRCK

FMO

ABCK

ACLKVREFO

ASDATA0

RF+3.3V

DVDD5V

DVDD3.3V

C188 470p

1

C198

1

C183

1k

R1178

DGND

FB108

0.1

C181

LIMITSW

R1114

0R133

MUTE4

MUTE123

ADIN

CL1141

100R1184

560

R1101

R102

0

27MHz

X101

USB+5V

JL1133

JL1132

JL1134

JL1131

220p

C1504

JL113

JL114

JL115

CL105

1

C127

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 51

52 53 54 55 56 57 58 59 60 61 62 63 64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

979899

100101102103104105106107108109

110

111

112113114

115116117118119120121122123124

125126127128

CXD9968R

*IC101

RF_A

RF_B

RF_C

RF_D

RF_E

RF_F

AVDD18_2

AVDD33_1

XTALI

XTALO

AGND33

V20

V14/VREF0

REXT

MDI1

MDI2

LDO1

LDO2

AVDD33_2

DMO

FMO

MUTE4

MSW

TRO

FOO

EEWP

USB_DP

USB_DM

VDD33_USB

VSS33_USB

PAD_VRT

VDD18_USB

SCL

SDA

IFSDI

SF_CS#

SF_DO

SF_DI

SF_CK

IFSCK

IFSOD

ICE

PRST#IRRD0

RD1

RD2

RD3

RD4

DVDD33

RD5

RD6

RD7

DVDD18

DQM0

RD15

RD14

RD13

RD12

DVSS33

RD11

RD10

RD9

RD8

RD11

RD10

RD9

RD8

RD11

RD10

RD9

RD8

DQM1

RCLK

RA11

DVDD33

RA9

RA8

RA7

RA6

RA5

RA4

RWE#

CAS#

RAS#

BA0

DVSS18

BA1

RA10

RA0

RA1

DVDD33

RA2

RA3

IFBSY

IFCS#

RX

DVDD18

TX

XMAMUTE

SPDIF

GPIO

DACVDDC

VREF

FS

DACVSSC

CVBS

DACVDDB

DACVDDA

SY/Y/G

SC/CB/B

CR/R

AADVSS

GPIO19

MUTE123

LIMITSW

AADVDD

APLLVDD

APLLCAP

ADACVSS2

ADACVSS1

GPIO

AVCM

GPIO

ADACVDD1

ADACVDD2

AVDD18_1

AGND18

RFIP

OPOUT

IOPMON/OPINP

SPFG/OPINN

CL108

CL109

10k

R125

0.01

C1505

0.01

C156

0.01

C151

0.01

C175

0.01

C172

1

C146

0.01

C145

0.1

C154

CL1142

CL1146

CL1147

CL1140

16V

10

C118

10

C119

0

RB106

0

RB105

47

48

49

8

50

51

52

53

54

1

2

3

4

5

6

7

41

42

43

44

45

46

14

13

12

11

10

9

34

40

35

36

37

38

39

16

15

17

18

19

20

21

28

27

29

30

31

32

33

26

25

24

23

22

EM638165TS-6G

*IC104

VDD

DG0

VDDQ

DQ1

DQ2

VSSQ

DQ3

DQ4

VDDQ

DQ5

DQ6

VSSQ

DQ7

VDD

LDQM

WE

CAS

RAS

CS

BA0

BA1

A10/AP

A0

A1

A2

A3

VDDVSS

A4

A5

A6

A4

A5

A6

A4

A5

A6

A7

A8

A9

A7

A8

A9

A7

A8

A9

A11

NC

CLKE

CLK

UDQM

NC

VSS

DQ8

VDDQ

DQ9

DQ10

VSSQ

DQ11

DQ12

VDDQ

DQ13

DQ14

VSSQ

DQ15

VSS

0

RB108

0

RB107

0RB111

CL1138

CL1139

1500p

C108

10C126

8

7

6

54

3

2

1

MM1661JHBE

IC111

Vo

NC

GND

CnCont

NC

Vin

USBGND

1

2

3

4

4P

CN1105

USBGND

USBP

USBM

USB+5V

CL1148

CL1149

CL1150

CL1151

RB112 0

0

RB114

0RB115

0RB113

JL1206

1

2

3

4

5

6

7

8

9

9P

CN1106

XIFCS

XIBSY

XSYSRST

IFSDI

IFSOD

DGND

IFSCK

NC

CL1152

0.1

C1513

0

R1263

0

R1250

0.01

C149

C168

0.1

R1249

1k

0.01

C150

0.1

C1512

10k

R122

10kR1262

10kR1261

100

R1269

1000p

C1506

0R1194

0

R11910R1193

0.1C125

0.1

C155

12p

C153

12p

C152

100k

R142

330

R1168

0R1121

5.1kR103

0R1123

0R1177

0.1

C111

0R1255

R1248

0

4700p

C199

0R1192

0

R1256

5

4

3

2

1

TK11133CSCL-G

IC107

CONT

GND

NOISE VOUT

VIN

R1278 10k

R1279 10k

0R1276

100R1277

R1281100

R1282

0

R1283

0

FB1268

FB1267

FB1265

FB1264

FB1266

0

R1280

VOE

VOF

VOB

VOA

VOD

RAS

CAS

RWE

DQM0

RD7

RD6

RD5

RD4

RD3

RD2

RD1

RD0

RA3

RA2

RA1

RA0

RA10

BA1

BA0

USBP

USBM

DMO

FMO

TRO

FOO

TRK-

TRK+

FCS+

FCS-

TRK-

TRK+

FCS+

FCS-

DMO

FMO

TRO

FOO

VOA

VOB

VOC

VOD

VOF

VOE

RWE

CAS

RAS

RD7

RD0

RD1

RD2

RD3

RD4

RD5

RD6

RA3

RA2

RA1

BA0

RA10

RA0

BA1

DQM0

USBM

USBP

VOC

IC104

SD-RAM

RF AMP, SERVO DSP,

IC101

IC111

IC107

+3.3V REGULATOR

DEVICE, OPTICAL

(1/2)

KHM-313CAB/C2NP

+1.8V REGULATOR

INVERTER

CD ON SWITCH

AUDIO PROCESSOR

AUTOMATIC

POWER CONTROL

-2 -1

(NC)

0.1

C1507

M

MAIN

BOARD

(2/3)

CN691

(Page 26)

6

DMB19 BOARD

(2/3)

(Page 22)

5

DMB19 BOARD

(3/3)

(Page 23)

1

DMB19

BOARD

(2/3)

(Page 22)

4

DMB19

BOARD

(3/3)

(Page 23)

3

DMB19

BOARD

(2/3)

(Page 22)

2

DMB19

BOARD

(2/3)

(Page 22)

E

HUB BOARD CN1500

(Page 29)

8

7

6

54

3

2

1

MX25L1605DM2I-12G

*IC102

_CS

SO

_W

GND SI

SCK

_HOLD

VCC

FLASH ROM

IC102

0.1

C102

0

R1252

DMB19 BOARD (1/3)

IC B/D

3.2

0(1.7)

3.2

0(2.6)

0(1.7)

0(2.6)

0(1.9)

3.2

0(2.6)

0(2)

0(2.7)

3.2

(2.4)

3.2

0

0(2.9)

0

0(0.5)

0(0.9)

0(1.4)

3.2

0(1.4)

0(1.2)

0(2.9)

0

3.2

1.6

3.2

0.2

3.3

0.1

3.2

0.1

2.8 3.3

3.3

1.1

0.3

3.2

0

5.0

0

5.0 0

3.4(2.5)

3.7(3.7) 3.4(3.2)

3.7(2.5)

0(2)0(0.1)

1

2

3 4

HCD-GTR33/GTR55/GTR77

2222

6-7. SCHEMATIC DIAGRAM - DMB19 Board (2/3) -

1 2 3 4 5 6 7 8 9 10 11 14 1512 13

A

B

C

D

E

F

G

H

I

J

2

1

7

3

6

0.01

C212

100k

R223

16V

100

C217

33k

R208

220p

C205

56k

R221

15kR231

27k

R219

10V47

C218

1.2k

R204

0.033

C211

0.01

C203

12k

R216

0.01

C219

15k

R214

56k

R226

0.01

C213

0.01C210

4700p

C233

10V

47

C220

33k

R209

10kR205

10k

R206

18kR232

100k

R225

0.033

C209

10kR224

0.01

C208

1k

R247

47k

R210

10kR234

0.01

C224

10kR212

6.8k

R213

12k

R215

4.7kR246

1k

R220

220p

C206

0.01

C215

1000p

C214

2.7k

R207

C216

0.01

JL206

JL205

JL203

JL202

JL201

1

2

3

4

5

6

7

8

9

10

11

12

13 14 15 16 17

18 19

20 212223 24

25

26

27

28

29

30

31

32

33

34

35

36

373839404142434445464748

FIN

IC201

FAN8036L

CL213

SPFG

DVDD5V

TRO

VREFO

FMO

DVDD3.3V

IOP

DMO

IOPMON

FCS-

DGND

LIMITSW

FCS+

TRK+

MUTE123

FOO

TRK-

RF+3.3V

MUTE4

REG01

TSD_M

REG02

VM9V

MTR_GND

0.1

C222

CL201

CL202

CL204

CL205

CL206

CL207

CL208

0.1

C221

33k

R233

10k

R256

1

2

3

4

5

6

6P

CN201

SP-

SP+

LIMIT

(GND)LIMIT

SL-

SL+

82k

R230

DVDD5V

DVDD3.3V

FCS-

FCS+

TRK+

TRK-

FCS+

TRK+

TRK-

SL+

SP-

SP+

SL-

SP+

SP-

SL+

IC201

FOCUS/TRACKING COIL DRIVE,

SPINDLE/SLED MOTOR DRIVE

IN1-

OUT1

IN2+

IN2-

OUT2

RES1

RES2

REGCTL

IN3+

IN3-

OUT3

IN4+

IN4-

OUT4

CTL

FWD

REV

SGND

MUTE123

MUTE4

PS

TSD_M

PVCC2

DO5-

DO5+

PGND2

DO4-

DO4+

DO3-

DO3+

REGO2

REGO1

PGND1

DO2-

DO2+

DO1-

DO1+

PVCC1

REGVCC

OPOUT2

OPIN2-

OPIN2+

VREF

SVCC

OPOUT1

OPIN1-

OPIN1+

IN1+

DMB19 BOARD

(1/3)

(Page 21)

DMB19 BOARD

(3/3)

(Page 23)

DMB19 BOARD (2/3)

DMB19 BOARD

(1/3)

(Page 21)

DMB19 BOARD

(1/3)

(Page 21)

DMB19 BOARD

(1/3)

(Page 21)

DMB19 BOARD

(3/3)

(Page 23)

8

1.5

3.3

2.3

1.5

1.5 1.5 2.3 3.3 3.4 3.3 3.2 9.0

4.4

4.3

4.4

4.3

3.7

5.1

4.4

9.0 4.49.02.73.33.31.55.01.52.52.51.5

IC B/D

DEVICE,

OPTICAL

(2/2)

KHM-313CAB/C2NP

• See page 40 for IC Block Diagrams.

Sony HCD-GTR33, HCD GTR55, HCD GTR77 Service Manual

SERVICE MANUAL

TABLE OF CONTENTS

SERVICING NOTES

DISASSEMBLY

2-1. DISASSEMBLY FLOW

2-2. CASE (SIDE-L/R)

2-3. TOP CASE

2-4. TAPE MECHANISM DECK (For African model only)

2-5. FRONT PANEL BLOCK, HUB BOARD, DMB19 BOARD

2-6. DC FAN (M101), BACK PANEL

2-7. MAIN BOARD

2-8. POWER BOARD

2-9. CHASSIS SECTION

2-10. CD MECHANISM BLOCK (CDM88BL-DVBU101)

2-11. OPTICAL PICK-UP BLOCK (KHM-313CAB)

2-12. BELT (DLM3A)

TEST MODE

MECHANICAL ADJUSTMENTS

ELECTRICAL CHECK

6-1. BLOCK DIAGRAM - RF SERVO, USB Section -

DIAGRAMS

6-2. BLOCK DIAGRAM - MAIN Section -

6-3. BLOCK DIAGRAM - AMP Section -

6-4. BLOCK DIAGRAM - PANEL, POWER SUPPLY Section -

6-5. PRINTED WIRING BOARD - DMB19 Board -

6-6. SCHEMATIC DIAGRAM - DMB19 Board (1/3) -

6-7. SCHEMATIC DIAGRAM - DMB19 Board (2/3) -