Sony HCD-M90 Service Manual

HCD-M90

SERVICE MANUAL

Ver 1.0 2002.05

HCD-M90 is the Amplifier, DVD player, Tape
Deck and Tuner section in CMT-M90DVD.

DVD
Section

TAPE
Section

US Model

Canadian Model

AEP Model

UK Model

E Model

Austr alian Model

Model Name Using Similar Mechanism NEW
DVD Mechanism Type CDM55D-DVBU8B
Base Unit Name DVBU8B
Optical Pick-up Name KHM-240AAA

Model Name Using Similar Mechanism HCD-M70

Amplifier section

For the U.S. model
AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:

With 6-ohm loads, both channels driven, from
70 - 20,000 Hz; rated 18 watts per channel
minimum RMS power, with no more than 0.9%
total harmonic distortion from 250 milliwatts to
rated output.

North American model:
Continuous RMS power output (reference):

Total harmonic distortion less than 0.07% (6 ohms at
1 kHz, 12 W)

European model:
DIN power output (rated): 15 + 15 W

Continuous RMS power output (reference):

Music power output (reference):

20 + 20 W
(6 ohms at 1 kHz, 10%
THD)

(6 ohms at 1 kHz, DIN)
20 + 20 W

(6 ohms at 1 kHz, 10%
THD)

40 + 40 W

SPECIFICATIONS

Other models:
The following measured at 230 V AC, 60 Hz
DIN power output (rated): 15 + 15 W

Continuous RMS power output (reference):

The following measured at 220 V AC, 60 Hz
DIN power output (rated): 12 + 12 W

Continuous RMS power output (reference):

Inputs
AUDIO IN MD (VIDEO) (phono jacks):

Outputs
VIDEO OUT: max. output level
(phono jack) 1 Vp-p, unbalanced,Sync

S-VIDEO OUT: Y: 1 Vp-p, unbalanced,
(4-pin/mini-DIN jack) Sync negative,

OPTICAL OUT: Optical

(6 ohms at 1 kHz, DIN)
18 + 18 W

(6 ohms at 1 kHz, 10%
THD)

(6 ohms at 1 kHz, DIN)
15 + 15 W

(6 ohms at 1 kHz, 10%
THD)

Sensitivity 500/250 mV,
impedance 47 kilohms

negative, load impedance
75 ohms

C: 0.286Vp-p,
load impedance 75 ohms

Wavelength: 660 nm

PHONES: Accepts headphones with

SPEAKER: accepts impedance of 6 to

DVD player section

Laser Semiconductor laser

Frequency response DVD (PCM 48 kHz):

Signal-to-noise ratio More than 90 dB
Dynamic range More than 90 dB
Video color system format

Tape deck section

Recording system 4-track 2-channel stereo
Frequency response 50 – 13,000 Hz (±3 dB),

an impedance of 8 ohms
or more

16 ohms.

(DVD: λ=650 nm,
CD: λ=780 nm)
Emission duration:
continuous

2 Hz – 22 kHz = (±1 dB)
CD: 2 Hz – 20 kHz =
(±1 dB)

NTSC, PAL

using Sony TYPE I
cassettes

– Continued on next page –

9-873-991-01 Sony Corporation

2002E0500-1 Home Audio Company
C 2002.05 Published by Sony Engineering Corporation

DVD DECK RECEIVER

HCD-M90

Tuner section

FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
North American model: 87.5 - 108.0 MHz

Other models: 87.5 - 108.0 MHz
Antenna FM wire antenna

Antenna terminals 75 ohms unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
Pan American model: 530 - 1,710 kHz

European model: 531 - 1,602 kHz

Other models: 530 - 1,710 kHz

Antenna AM loop antenna, external
Intermediate frequency 450 kHz

General

Power requirements
North American model: 120 V AC, 60 Hz
European model: 230 V AC, 50/60 Hz
Australian model: 230 V AC, 50/60 Hz
Other models: 110 – 120 V or

Power consumption
European model: see the name plate

Other models: see the name plate
Dimensions (w/h/d) incl. projecting parts and controls
Amplifier/Tuner/Tape/DVD section:

Mass
Amplifier/Tuner/Tape/DVD section:

Design and specifications are subject to change
without notice.

(100-kHz step)
(50-kHz step)

(with the tuning interval
set at 10 kHz)
531 - 1,710 kHz
(with the tuning interval
set at 9 kHz)

(with the tuning interval
set at 9 kHz)

(with the tuning interval
set at 10 kHz)
531 - 1,602 kHz
(with the tuning interval
set at 9 kHz)

antenna terminal

220 – 240 V AC,
50/60 Hz
Adjustable with voltage
selector

0.3 watts (at the Power
Saving mode)

Approx. 159 × 217 ×
335 mm

Approx. 5.7 kg

2

HCD-M90

r

This label is located inside the unit.

Notes on chip component replacement

•Never reuse a disconnected chip component.

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

Flexible Circuit Board Repairing

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

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

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

SAFETY CHECK-OUT

After correcting the original service problem, perform the follow­ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.

LEAKAGE TEST

The AC leaka ge 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. Follo w the manufacturers’ instructions to use these
instruments.

2. A battery-operated A C milliammeter. The Data Precision 245
digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a V OM
or battery-operated A C 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 A C range are suitable. (See Fig. A)

CAUTION

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

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

The following caution label is located inside the
apparatus.

0.15 µF

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

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED
LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB­LISHED BY SONY.

To Exposed Metal
Parts on Set

1.5 k

Earth Ground

Ω

AC
voltmete
(0.75 V)

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE 0
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM­POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

3

HCD-M90

TABLE OF CONTENTS

1. SERVICING NOTES............................................... 5

2. GENERAL................................................................... 6

3. DISASSEMBLY

3-1. Disassembly Flow ........................................................... 7

3-2. Panel (Side) (L), Panel (Side) (R) .................................. 8

3-3. Top Panel Section............................................................ 8

3-4. Mechanical Deck (Tape) ................................................. 9

3-5. Front Panel Section ......................................................... 9

3-6. Back Panel Assy .............................................................. 10

3-7. MAIN Board ................................................................... 10

3-8. CONTROL Board, Noise Shield Case ........................... 11

3-9. DAC Board ...................................................................... 11

3-10. DVD Board...................................................................... 12

3-11. Mechanism Deck (CDM55D-DVBU8B) ....................... 12

3-12. LOADING Board, Motor (LD) Assy (M901)................ 13

3-13. RF-240 Board.................................................................. 13

3-14. Tray.................................................................................. 14

3-15. Optical Device (KHM-240AAA) ................................... 14

4. TEST MODE.............................................................. 15

5. ELECTRICAL ADJUSTMENTS

DVD Section ................................................................... 23

Deck Section ................................................................... 24

6. DIAGRAMS

6-1. Block Diagram – DVD SERVO Section – .................... 25

6-2. Block Diagram – DVD MAIN Section (1/2) – ............. 26

6-3. Block Diagram – DVD MAIN Section (2/2) – ............. 27

6-4. Block Diagram – TUNER/TAPE DECK Section – ...... 28

6-5. Block Diagram – AUDIO Section – .............................. 29

6-6. Block Diagram

– KEY CONTROL/POWER SUPPLY Section –........... 30

6-7. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 31

6-8. Printed Wiring Board – RF-240 Board –....................... 32

6-9. Schematic Diagram – RF-240 Board – ......................... 33

6-10. Printed Wiring Boards

– DVD (Side A)/LOADING Boards –............................ 34

6-11. Printed Wiring Board – DVD Board (Side B) –............ 35

6-12. Schematic Diagram

– DVD (1/7)/LOADING Boards – ................................. 36

6-13. Schematic Diagram – DVD Board (2/7) – .................... 37

6-14. Schematic Diagram – DVD Board (3/7) – .................... 38

6-15. Schematic Diagram – DVD Board (4/7) – .................... 39

6-16. Schematic Diagram – DVD Board (5/7) – .................... 40

6-17. Schematic Diagram – DVD Board (6/7) – .................... 41

6-18. Schematic Diagram – DVD Board (7/7) – .................... 42

6-19. Printed Wiring Board – DAC Board –........................... 44

6-20. Schematic Diagram – DAC Board –.............................. 45

6-21. Printed Wiring Board – TC Board – .............................. 46

6-22. Schematic Diagram – TC Board – ................................. 47

6-23. Printed Wiring Boards – MAIN/JACK Boards – .......... 48

6-24. Schematic Diagram – MAIN Board (1/2) – .................. 50

6-25. Schematic Diagram – MAIN (2/2)/JACK Boards –...... 51

6-26. Printed Wiring Boards

– CONTROL/VIDEO Boards –...................................... 52

6-27. Schematic Diagram – CONTROL/VIDEO Boards – ... 53

6-28. Printed Wiring Board – SWITCH Board – ................... 54

6-29. Schematic Diagram – SWITCH Board – ...................... 55

6-30. Printed Wiring Board – POWER Board – ..................... 56

6-31. Schematic Diagram – POWER Board –........................ 57

6-32. IC Pin Function Description ........................................... 61

7. EXPLODED VIEWS

7-1. Panel (Side) Section ........................................................ 72

7-2. Front Panel Section ......................................................... 73

7-3. Top Panel Section............................................................ 74

7-4. Chassis Section-1 ............................................................ 75

7-5. Chassis Section-2 ............................................................ 76

7-6. Chassis Section-3 ............................................................ 77

7-7. Mechanism Deck Section (CDM55D-DVBU8B) .......... 78

7-8. Base Unit Section (DVBU8B) ........................................ 79

8. ELECTRICAL PARTS LIST ............................... 80

4

SECTION 1

Connect jig (extension cable J-2501-219-B)
to the control board (CN507) and DVD board (CN101).

control board (CN008)

DVD board (CN008)

TC board (CN301)

main board (CN301)

Connect jig (extension cable J-2501-167-A)
to the main board (CN301) and TC board (CN301).

SERVICING NOTES

HCD-M90

NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electro­static break-down because of the potential difference generated
by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode emis­sion, observe from more than 30 cm away from the objecti ve lens.

MODEL IDENTIFICATION
– Back Panel –

Part No.

SERVICE POSITION

In checking the control board, prepare jig (extension cable J-2501­219-B: 1.00 mm Pitch, 10 cores, Length 300 mm).

Model Name Part No.

AEP and UK models 4-239-822-0
US and Canadian models 4-239-823-0
Singapore model 4-239-824-0
Australian model 4-240-899-0

[]

[]

[]

[]

In checking the tape deck section, prepare jig (extension cable J­2501-167-A: 1.25 mm Pitch, 17 cores, Length 300 mm).

5

HCD-M90

Remote Control

ANGLE ea
AUDIO ed
BASS/TREBLE 3
CLEAR ql
CLOCK/TIMER SELECT ws
CLOCK/TIMER SET wa
CURSOR T/t 5
DISPLAY qg
DSG 2
DVD DISPLAY qs
DVD MENU 0
DVD TOP MENU qf
DVD SETUP ef
DVD N/SELECT qj
DVD X qj
DVD x qj
DVD ./> 7
DVD t

/ T 8

ENTER/YES w;

FUNCTION qh
Numeric buttons wh
PLAY MODE/TUNING MODE

wk

REPEAT/FM MODE wl
RETURN O qa
SCROLL eg
SLEEP wd
SUBTITLE e;
TAPE nN qk
TAPE X qk
TAPE x qk
TAPE m/M 6
TUNER BAND eh
TUNER +/– wj
TUNING MEMORY ej
TV `/1 wf
TV CH +/– wg
TV VOL +/– ek
TV VIDEO r;
VES 9
VOL +/– es
WIDE el

`/1 (power) 1
V/v/B/b/ENTER qd
+/– 4

ALPHABETICAL ORDER

A – E F – W

BUTTON DESCRIPTIONS

+

+
–

–

++
––

1
2

3

4
5

7

6

8
9

0

qaqs

qd

qf

qg

qh

qj

qk

ql

w;

ws
wa

wd

Main unit

SECTION 2

GENERAL

This section is extracted from
instruction manual.

ALPHABETICAL ORDER

A – F

CD SYNCHRO qa
CD SYNCHRO indicator w;
DIRECTION 0
Disc tray 9
Display window 2
DSG qk
DVD N 7
DVD X 7
FUNCTION ql

w;
ql

qk

qj

qh
qg

P – V

PHONES jack qf
PLAY MODE/TUNING MODE

qd

Remote sensor 4
REPEAT/FM MODE qs
TAPE nN qj
TAPE X qj
TUNER AM qg
TUNER FM qg
TUNING +/– 3
VOLUME +/– 6

1

?/1

z

2

nN N

BUTTON DESCRIPTIONS

?/1 (power) 1
m/M 3
l/L 3
x 5
Z DVD 8
z REC qh

ML

3

lm

4

x

5
6

XX

7

Z

8
9

r;
el

ek

ej

0qaqsqdqf

eh
eg

+

–

ef
ed

wf

++

wg

––

wh

wj
wk
wl
e;
ea

+

es

–

Setting the clock

1

Press ?/1 to turn on the system.

2

Press CLOCK/TIMER SET on the
remote.

3

Press + or — on the remote repeatedly
to set the hour.

4

Press ENTER/YES or CURSORt on
the remote.

5

Press + or — on the remote repeatedly
to set the minute.

6

Press ENTER/YES on the remote.

The clock starts working.

To adjust the clock

1

Press CLOCK/TIMER SET on the remote.

2

Press + or — on the remote to select CLOCK
SET?, then press ENTER/YES on the
remote.

3

Do the same procedures as step 3 to 6 above.

6

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

3-1. DISASSEMBLY FLOW

SET

3-2. PANEL (SIDE) (L),

PANEL (SIDE) (R)
(page 8)

3-3. TOP PANEL SECTION

(page 8)

HCD-M90

SECTION 3

DISASSEMBLY

3-4. MECHANICAL DECK (TAPE)

(page 9)

3-5. FRONT PANEL SECTION

(page 9)

3-6. BACK PANEL ASSY

(page 10)

3-7. MAIN BOARD

(page 10)

3-8. CONTROL BOARD,

NOISE SHIELD CASE
(page 11)

3-9. DAC BOARD

(page 11)

3-10.DVD BOARD

(page 12)

3-12.LOADING BOARD,

MOTOR (LD) ASSY (M901)
(page 13)

3-11.MECHANISM DECK

(CDM55D-DVBU8B)
(page 12)

3-13.RF-240 BOARD

(page 13)

3-14.TRAY

(page 14)

3-15.OPTICAL DEVICE

(KHM-240AAA)
(page 14)

7

HCD-M90

)

)

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

3-2. PANEL (SIDE) (L), PANEL (SIDE) (R)

1

four screws
(BTP3

×

10)

2

1

screw
(BTP3

×

10)

4

screw
(BTP3

6

panel (side) (R)

×

10

3

panel (side) (L)

3-3. TOP PANEL SECTION

3

wire (flat type) (17 core)
(CN301)

4

top panel section

4

four screws
(BTP3

×

10)

5

1

screw
(BTP3 × 10

2

8

3-4. MECHANICAL DECK (TAPE)

)

qd

mechanical deck (tape)

9

0

MD bracket (L)

two screws
(BVTT2.6

×

5)

2

3

shield case (TC)

5

connector

HCD-M90

1

two screws
(BVTP3

4

FFC cable 8P

×

6

two screws
(BVTT2.6

8)

3-5. FRONT PANEL SECTION

1

wire (flat type) (FFC) (21 core) (CN801)

1

two screws
(BVTP3

qa

two screws
(BVTT2.6

×

5)

8

TC board

3

lead (with connector)

7

6

screw
(BVTT2.6

×

5)

×

8)

qs

MD bracket (R

×

5)

5

front panel section

4

three screws
(BTP3

×

10)

2

connector
(CN304)

9

HCD-M90

3-6. BACK PANEL ASSY

1

two connectors
(CN802, CN809)

3

back panel assy

2

four screws
(BTP3

2

two screws
(BTP3

×

10)

×

10)

3-7. MAIN BOARD

1

wire (flat type) (25 core) (CN806)

2

connector
(CN902)

4

main board

3

screw
(BTP3 × 12)

10

1

wire (flat type) (17 core) (CN804)

3-8. CONTROL BOARD, NOISE SHIELD CASE

2

two screws
(BVTP3 × 8)

1

wire (flat type) (FFC) (10 core)
(CN507)

3

control board

5

lead (with connector)

4

connector
(CN008)

8

noise shield case

1

flexible flat cable (13 core)
(CN506)

1

flexible flat cable (6 core)
(CN803)

5

two leads (with connector)

HCD-M90

6

two screws
(BVTP3 × 8)

3-9. DAC BOARD

4

DAC board

3

terminal

2

screw
(DIA. 2.6

7

6

two screws
(BVTP3 × 8)

×

8)

1

flexible flat cable (5 core)
(CN300)

2

screw

3

terminal

(DIA. 2.6

×

8)

11

HCD-M90

)

k

3-10. DVD BOARD

3

4

two terminals

5

two screws
(DIA. 2.6 × 8)

DVD board

4

3

terminal

screw
(DIA. 2.6

1

×

8)

flexible flat cable (9 core)

(CN009)

1

flexible flat cable 26P
(CN010)

2

connector
(CN402)

3

screw
(DIA. 2.6 × 8

4

terminal

3-11. MECHANISM DECK (CDM55D-DVBU8B)

3

two claws

3

screw
(BVTP3

×

8)

1

two screws
(DIA. 2.6 × 8)

2

bracket (MPEG)

4

Remove the mechanism dec
in the direction of the arrow.

12

3-12. LOADING BOARD, MOTOR (LD) ASSY (M901)

)

1

Remove the belt (CDM55).

4

motor (LD) assy (M901)

3

Remove the two soldes

of motor (LD) assy (M901) .

HCD-M90

3-13. RF-240 BOARD

2

flexible flat cable (26P)

(CN001)

2

two screws

(BTP 2.6

5

loading board

×

6)

4

RF-240 board

3

two screws

(BTP 2.6 × 6)

1

flexible flat cable (25 core

(CN002)

13

HCD-M90

)

3-14. TRAY

1

While pushing the two protrusions, release the two claws fixing the tray

and pull out the tray in the direction of the arrow

A

2

tray

A

. (Be carefull of the two claws.

3-15. OPTICAL DEVICE (KHM-240AAA)

5

two step screws (M)

2

flexible flat cable

(9 core)

6

holder (KHM-240)

7

4

step screw (L)

3

flexible flat cable

(26 core)

8

three insulators

9

optical device

(KHM-240AAA)

14

1

floating screw (PTPWHM 2.6)

SECTION 4

)

TEST MODE

HCD-M90

[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 I/1 key to turn the power ON.

2. Press three keys x , z REC , and I/1 simultaneously.

3. The set is reset, and becomes standby state.

[PANEL TEST]

•This mode is used to check the liquid crystal display, LED,
destination, model, software version, and key.

Procedure:

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

2. Press three keys Z DVD , z REC , and [FUCTION] simultaneously.

3. Liquid crystal display and LEDs are all turned on.

4. When you want to enter the version check mode, press the

[PLAY MODE/TUNING MODE] keys. The destination and model

are displayed.

5. Each time [PLAY MODE/TUNING MODE] key is pressed, the

display changes starting from MC version, GC version, ST
version, TA v ersion, TM v ersion, TC v ersion, MD version, and
DVD versionin this order , and returns to the MC version display .

6. When [REPEAT/FM MODE] key is pressed while the version

numbers are being displayed except model and destination,
year, month and day of the software creation appear. When

[REPEAT/FM MODE] key is pressed again, the display returns to

the software version display . When [PLAY MODE/TUNING MODE]
key is pressed while year, month and day of the software creation
are being displayed, the year, month and day of creation of the
software versions are displayed in the same order of version
display.

7. Press the

8. In the key check mode, the liquid crystal display displays “K0

J0 V0”. Each time a key is pressed, “K” value increases.
However , once a key is pressed, it is no longer tak en into account.

9. To release this mode, press three keys in the same manner as

step 2, or disconnect the power cord.

[CD SYNCHRO] key, and the key check mode is activated.

[AMP TEST MODE]

• 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 I/1 key to turn the power ON.

2. Press three keys x , [DSG], and [PLAY MODE/TUNING MODE]

simultaneously.

3. The display changes a shown below each time [BASS/TRBLE]

key on the remote commander is pressed.

“TONE MAX”

(BASS/TREBLE MAX, VOLUME MAX)

[DVD SHIP (MECHA) MODE]

•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 I/1 key to turn the power ON.

2. Press the [FUNCTION] key to select “DVD”.

3. Press three keys x , [DSG], and [REPEAT/FM MODE]

simultaneously.

4. The message “LOCK” is displayed on the liquid crystal display

and turn the power off automatically, and becomes delivery
mode.

[SHIP MODE]

• This mode is used to execute “COLD RESET” and “DVD SHIP
(MECHA)” simultaneously.

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

2. Press the [FUNCTION] key to select “DVD”.

3. Press three keys x , [DSG], and [CD SYNCHRO] simultaneously .

4. The message “LOCK” is displayed on the liquid crystal display

and turn the power off automatically, and set is reset, then
becomes delivery mode.

[DVD SERVICE MODE]

• This mode allows you to make diagnosis and adjustment easily
using the remote commander and monitor TV. The instructions,
diagnostic results, etc. are given on the on-screen display (OSD).

Enter the DVD Service Mode

Procedure:

1. Connect a TVmonitor to this set.

2. Press the I/1 key to turn the power ON.

3. Press the

4. Press three keys x , [DSG], and [FUCTION] simultaneously.

5. Test mode start and display the menu shown below on the TV

screen. (At the bottom of the menu screen, the model name and
revision number are displayed)

6. To execute each function, select the desired menu and press its

number on the remote commander. To release from this mode,
press the I/1 key.

Test Mode Menu

0. Syscon Diagnosis

1. Drive Auto Adjustment

2. Drive Manual Operation

3. Mecha Aging

4. Emergency History

5. Version Information

6. Video Level Adjustment
Exit: POWER Key
_
Model : HCX-1102_xx
Revision : 1.xxx

[FUNCTION] key to select “DVD”.

“TONE MIN”

“TONE FLAT”

4. The display changes “VOLUME MAX” each time [VOLUME +]
key is pressed and “VOLUME MIN” each time [VOLUME --] key
is pressed.

(BASS/TREBLE MIN, VOLUME MAX)

(BASS/TREBLE FLAT, VOLUME MAX

15

HCD-M90

Syscon Diagnosis

The same contents as board detail check by serial interface can be
checked from the remote commander.
On the T est Mode Menu scr een, press the [10/0] key on the remote
commander, and the following Check Menu will be displayed.

### Syscon Diagnosis ###

Check Menu

0. Quit

1. All

2. Version

3. Peripheral

4. Servo

5. Supply

6. AV Decoder

7. Video

8. Audio
_

0. Quit

Quit the Syscon Diagnosis and return to the Test Mode Menu.

1. All

This menu checks all diagnostic items continuously. Normally, all
items are checked successively one after another automatically
unless an error is found, but at a certain item that requires judgment
through a visual check to the result, the following screen is displayed
for the key entry.

### Syscon Diagnosis ###

Diag All Check
No. 2 Version

2-2. Revision
ROM Revision = 1070

Press NEXT Key to Continue
Press PREV Key to Repeat
_

For the ROM Check, the check sum calculated by the syscon is
output, and therefore you must compare it with the specified value
for confirmation. Following the message, press the DVD > key
to go to the next item, or the DVD . key to repeat the same
check again. To quit the Syscon Diagnosis and return to the Check
Menu screen, press the DVD x or the [ENTER] keyon the remote
commander. If an error occurred, the diagnosis is suspended and
the error code is displayed as shown below.

### Syscon Diagnosis ###

3-2. EEPROM Check
Error 03: EEPROM Write/Reed N
Address : 00000001
Write Data : 2492
Read Data : 2490
Press NEXT Key to Continue
Press PREV Key to Repeat
_

Selecting 2 and subsequent items calls the submenu screen of each
item. For example, if “5. Supply” is selected, the following submenu
will be displayed.

### Syscon Diagnosis ###

Check Menu

No. 5 Supply

0. Quit

1. All

2. ARP Register Check

3. ARP to RAM Data Bus

4. ARP to RAM Address Bus

5. ARP RAM Check
_

2. Version

(2-2) Revision

ROM revision number is displayed.
Error: Not detected.
The revision number defined in the source file of ROM
(IC108) is displayed with four digits.

(2-3) ROM Check Sum

Check sum is calculated.
Error: Not detected.
The 8-bit data are added at addresses 0x000F0000 to
0x002EFFFF of ROM (IC108) and the result is displayed
with 4-digit hexadecimal number. Compare the result with
the specified value.

(2-4) Model Type

Model code is displayed.
Error: Not detected.
The model code read from EEPROM (IC101) is displayed
with 2-digit hexadecimal number.

(2-5) Region

Region code is displayed.
Error: Not detected.
The region code determined from the model code is displayed.

3. Peripheral

(3-2) EEPROM Check

Data write → read, and accord check
Error 03: EEPROM write/read discord
Data 0x9249, 0x2942, 0x4294 are written to addresses
0x00~0xFF of EEPROM (IC101), then read and checked.
Before writing, the data are saved, then after checking, they
are written to restore the contents of EEPROM.

4. Servo

(4-2) Servo DSP Check

Data write → read, and accord check
Error 12: Read data discord
Data 0x9249, 0x2942, 0x4294 are written to the address
0x602 of RAM in the servo DSP (IC302), then read and
checked.

16

HCD-M90

(4-3) DSP Driver Test

Test signal data → DSP driver
Error: Not detected.
Caution: Do not conduct this test with a mechanical deck
connected.
The maximum voltage is applied to the servo driver IC
(IC401). If mechanical deck is connected, the motor and
optical pick-up could be damaged. Disconnect mechanical
deck following the output message, then enter specified 4­or 5-digit number from the remote commander, and press
the [ENTER] on the remote commander. The test is con­ducted only when the input data accord. Check the output
level, then press the DVD > on the remote commander
to finish the test. This test is skipped if “All” is selected.

Supplement: How to disconnect mechanical deck
Disconnect flat cables connected to the CN009 and CN010
of DVD board. Also, disconnect harness from the CN402.

5. Supply

Caution: Do not conduct this check with a mechanical deck

connected.
An access is made to the stream supply and servo control
IC (IC302) and external RAM (IC303) using check data.
If mechanical deck is connected, the motor and optical
pick-up could be damaged. This check is also executed
by the “All” menu item.

Supplement: How to disconnect mechanical deck

Disconnect flat cables connected to the CN009 and
CN010 of DVD board. Also, disconnect harness from
the CN402.

(5-2) ARP Register Check

Data write → read, and accord check
Error 08: ARP register write, and read data discord
Data 0x00 to 0xFF are written to the TMAX register (ad­dress 0xC6) in ARP (IC302), then the y are read and checked.

(5-3) ARP to RAM Data Bus

Data write → read, and accord check
Error 09: ARP ↔ RAM data bus error
Data 0x0001 to 0x8000 where one bit each is set to 1 are
written to the address 0 of RAM (IC303) connected to the
ARP (IC302) through the bus, then they are read and
checked. In case of discord, written bit pattern and read
data are displayed. If data where multiple bits are 1 are
read, the bits concerned may touch each other. Further, if
data where certain bit is always 1 or 0 regardless of written
data, the line could be disconnected or shorted.

(5-4) ARP to RAM Address Bus

Data write → other address read discord check
Error 10: ARP ↔ RAM address bus error
Caution: Address and data display in case of an error is

different from the display of other diagnosis (de-

scribed later).
Before starting the test, all addresses of RAM (IC303) are
cleared to 0x0000. First, 0xA55A is written to the address
0x00000, and the address data are read and checked from
addresses 0x00001 to 0x80000 while shifting 1 bit each.
Next, the data at that address is cleared, and it is written to
the address 0x00001, and read and checked in the same
manner. This check is repeated up to the address 0x80000
while shifting the address data by 1 bit each. If data other
than 0 is read at the addresses except written address, an
error is given because all addresses were already cleared to

0. In this check, the error display pattern is different from
that of other diagnosis; read data, written address, and read
address are displayed in this order. However, the message
uses same template, and accordingly exchange Address and
Data when reading. The following display, for example,

### Syscon Diagnosis ###

5-4. ARP to RAM Address Bus
Error 10: ARP - RAM Address B
Address : 0000A55A
Write Data : 00000000
Read Data : 00080000
Press NEXT Key to Continue
Press PREV Key to Repeat
_

shows the data 0xA55A was read from address 0x00080000
though it was written to the address 0x00000000. This im­plies that these addresses are in the form of shadow. Also,
if the read data is not 0xA55A, another error will be present.

(5-5) ARP RAM Check

Data write → read, and accord check
Error 11: ARP RAM read data discord
The program code data stored in ROM are copied to all
areas of RAM (IC303) connected to the ARP (IC302)
through the bus, then they are read and checked if they ac­cord. If the detail check was selected initially, the data are
written to all areas and read, then the same test is conducted
once again with the data where all bits are inverted between
1 and 0. If discord is detected, faulty address, written data,
and read data are displayed following the error code 11,
and the test is suspended.

6. AV Decoder

(6-2) 1930 RAM

Data write → read, and accord check
Error 13: AVD RAM read data discord
The program code data stored in ROM (IC108) are copied
to all areas of RAM (IC504, IC505) connected to the AV
decoder (IC503) through the bus, then they are read and
checked if they accord. Further, the same test is conducted
once again with the data where all bits are inverted between
1 and 0. If discord is detected, faulty address, written data,
and read data are displayed following the error code 13,
and the test is suspended.

17

HCD-M90

(6-3) 1930 SP

ROM → AVD RAM → Video OUT
Error: Not detected.
The data including sub picture streams in ROM (IC108)
are transferred to the RAM (IC504, IC505) in AV decoder
(IC503), and output as video signals from the AV decoder
(IC503). They are output from all video terminals
(Composite, Y/C).

7. Video

(7-2) Color Bar

AVD color bar command write → Video OUT
Error: Not detected.
The command is transferred to the AVD, and the color bar
signals are output from video terminals. They are output
from all video terminals (Composite, Y/C).

(7-3) Composit Out

(7-4) Y/C Out

(7-6) Component Out

8. Audio

(8-2) ARP -> 1930

Error 14: ARP → 1930 video NG
15: ARP → 1930 audio NG

(8-3) Test Tone

All channels
2ch Left
2ch Right
Front Left
Front Right
Rear Left
Rear Right
Center
Sub Woofer

Check Items List

2. Version
(2-2) Revision
(2-3) ROM Check Sum
(2-4) Model Type
(2-5) Region

3. Peripheral
(3-2) EEPROM Check

4. Servo
(4-2) Servo DSP Check
(4-3) DSP Driver Test

5. Supply
(5-2) ARP Register Check
(5-3) ARP to RAM Data Bus
(5-4) ARP to RAM Address Bus
(5-5) ARP RAM Check

6. AV Decoder
(6-2) 1930 RAM
(6-3) 1930 SP

7. Video
(7-2) Color Bar
(7-3) Composit Out
(7-4) Y/C Out
(7-6) Component Out

8. Audio
(8-2) ARP -> 1930
(8-3) Test Tone

Error Codes List

00: Error not detected
01: RAM write/read data discord
02: Gate array NG
03: EEPROM NG
08: ARP re gister read data discord
09: ARP ↔ RAM data bus error
10: ARP ↔ RAM address bus error
11: ARP RAM read data discord
12: Servo DSP NG
13: 1930 SDRAM NG
14: ARP → 1930 video NG
15: ARP → 1930 audio NG
16: 1910 UCODE download NG
17: System call error (function not supported)
18: System call error (parameter error)
19: System call error (illegal ID number)
20: System call error (time out)
90: Error occurred
91: User verification NG
92: Diagnosis cancelled

Drive Auto Adjustment

On the Test Mode Menu screen, press the
commander, and the dri ve auto adjustment menu will be displayed.

## Drive Auto Adjustment ##

Adjustment Menu

0. ALL

1. DVD-SL

2. CD

3. DVD-DL

4. LCD

Exit: RETURN

Normally, “0” is selected to adjust DVD (single layer), CD, and
DVD (dual layer) in this order . But, individual items can be adjusted
for the case where adjustment is suspended due to an error. In this
mode, the adjustment can be made easily through the operation
following the message displayed on the screen.

0. ALL

Press the

[10/0] key on the remote commander, then press the

[1] key on the remote

[ENTER] key on the remote commander, and the servo set data in

EEPROM will be initialized. Then, 1. D VD-SL disc, 2. CD disc, 3.
DVD-DL disc, and 3. D VD-DL disc are adjusted in this order . Each
time one disc was adjusted, it is ejected. Replace it with the specified
disc following the message. Though the message to confirm whether
are adjusted is not displayed, you can finish the adjustment if
pressing the DVD x key on the remote commander. During
adjustment of each disc, the measurement for disc type judgment is
made. As automatic adjustment does not judge the disc type unlike
conventional models, take care not to insert wrong type discs. Also,
do not give a shock during adjustment.

18

HCD-M90

1. DVD-SL (single layer)

Press the [1] key on the remote commander , insert D VD single layer
disc, and press [ENTER] key on the remote commander, and the
adjustment will be made through the following steps, then adjusted
values will be written to the EEPROM.

DVD Single Layer Disc Adjustment Steps

1. SLED TILT Reset

2. Disc Check Memory SL

3. Wait 300 msec

4. Set Disc Type SL

5. LD ON

6. Spdl Start

7. Wait 1 sec

8. Focus Servo ON 0

9. Auto Track Offset Adjust

10. CLVA ON

11. W ait 500 msec

12. Tracking ON

13. Wait 1 sec

14. Sled ON

15. Check CLV Lock

16. Auto LFO Adjust

17. Auto Focus Offset Adjust

18. Auto Tilt Position Adjust

19. Auto Focus Gain Adjust

20. Auto Focus Offset Adjust

21. EQ Boost Adjust

22. Auto LFO Adjust

23. Auto Track Gain Adjust, Search Check

24. 32Tj Fwd

25. 32Tj Rev

26. 500Tj Fwd

27. 500Tj Rev

28. All Servo Stop

29. Eep Copy Loop Filter Offset

2. CD

Press the [2] key on the remote commander, insert CD disc, and
press [ENTER] key on the remote commander , and the adjustment
will be made through the following steps, then adjusted values will
be written to the EEPROM.

CD Adjustment Steps

1. Sled Tilt Rest

2. Disc Check Memory CD

3. Wait 500 msec

4. Set Disc Type CD

5. LD ON

6. Spdl Start

7. Wait 500 msec

8. Focus Servo ON 0

9. Auto Track Offset Adjust

10. CLVA ON

11. W ait 500 msec

12. Tracking ON

13. (TC Display Start)

14. Wait 1 sec

15. Jitter Display Start

16. Sled ON

17. Check CLV ON

18. Auto LFO Adjust

19. Auto Focus Offset Adjust

20.

21. Auto Focus Gain Adjust

22. Auto Focus Offset Adjust

23. Eq Boost Adjust

24. Auto LFO Adjust

25. Auto Track Gain Adjust, Search Check

26. 32Tj Fwd

27. 32Tj Rev

28. 500Tj Fwd

29. 500Tj Rev

30. All Servo Stop

19

HCD-M90

3. DVD-DL (dual layer)

Press the [3] key on the remote commander, insert DVD dual layer
disc, and press [ENTER] key on the remote commander, and the
adjustment will be made through the following steps, then adjusted
values will be written to the EEPROM.

DVD Dual Layer Disc Adjustment Steps

1. Sled Tilt Reset

2. Disc Check Memory DL

3. Wait 500 msec

4. Set Disc Type DL

5. LD ON

6. Spdl Start

7. Wait 1 sec, Layer 1 Adjust

8. Focus Servo ON 0

9. Auto Track Offset Adjust

10. Clva ON

11. W ait 500 msec

12. Tracking ON

13. Wait 500 msec

14. Sled ON

15. Check CL V Lock

16. Auto Loop Filter Offset Auto Focus Adjust

17.

18. Auto Focus Gain Adjust

19. Auto Focus Offset Adjust

20. Eq Boost Adjust

21. Auto Loop Filter Offset

22. Auto Track Gain Adjust, Search Check

23. 32Tj Fwd

24. 32Tj Rev

25. 500Tj Fwd

26. 500Tj Rev, Layer 0 Adjust

27. Fj (L1 -> L0)

28. Auto Track Offset Adjust L0

29. Clva ON

30. Wait 500 msec

31. Tracking ON

32. Wait 500 msec

33. Sled ON

34. Check CL V Lock

35. Auto Focus Filter Offset

36. Auto Focus Adjust

37.

38. Auto Focus Gain Adjust

39. Auto Focus Offset Adjust

40. Eq Boost Adjust

41. Auto Loop Filter Offset

42. Auto Track Gain Adjust, Search Check

43. 32Tj Fwd

44. 32Tj Rev

45. 500Tj fwd

46. 500Tj Rev, Layer Jump Check

47. Lj (L0 -> L1)

48. Lj (L1 -> L0)

Drive Manual Operation

On the Test Mode Menu screen, Press the [2] key on the remote
commander, and the manual operation menu will be displayed. For
the manual operation, each servo on/off control and adjustment can
be executed manually.

## Drive Manual Operation ##

1. Disc Type

2. Servo Control

3. Track/Layer Jump

4. Manual Adjustment

5. Auto Adjustment

6. Memory Check

7. Sacd Water Mark

0. Disc Check Memory
_

Operation Menu

Exit: Return

In using the manual operation menu, take care of the following
points. These commands do not provide protection, thus requiring
correct operation. The sector address or time code field is displayed
when a disc is loaded.

1. Set correctly the disc type to be used on the Disc Type screen.
The disc type must be set after a disc was loaded.
The set disc type is cleared when the tray is opened.

2. After power ON, if the Drive Manual Operation was selected,
first perf orm “Reset SLED TILT” by opening 1. Disc Type
screen.

3. In case of an alarm, immediately press the DVD x key on the
remote commander to stop the servo operation, and turn the
power OFF.

Basic operation (controllable from front panel or remote
commander)

I/1 Power OFF

DVD x Servo stop

Z DVD

[RETURN]

*1

*2

Stop+Eject/Loading
Return to Operation Menu or T est Mode
Menu

DVD > , DVD .*2Transition between sub modes of menu

[1] to [9], [10/0]

M , m

*2

*2

Selection of menu items
Increase/Decrease in manually adjusted

value
*1: Key of front panel
*2: Key of remote commander

49. All Servo Stop

20

HCD-M90

0. Disc Check Memory

Disc Check

1. SL Disc Check

2. CD Disc Check

3. DL Disc Check

0. Reset SLED TILT
_

On this screen, the mirror time is measured to judge the disc and it
is written to the EEPROM. First load DVD SL disc and press [1]
key on the remote commander, next load CD disc and press [2] key
on the remote commander, and finally load DVD DL disc and press

[3] key on the remote commander. The adjustment must be executed

more than once after default data were written. External vibration
or shock to the player must not be given. Reference value for DVD
is from 10 to 20, and for CD, from 28 to 4F . Check that the v alue of
CD is larger than that of DVD. When those values are beyond a
range perform this adjustment again. From this screen, you can go
to another mode by pressing DVD > or DVD . key on the
remote commander, but you cannot enter this mode from another
mode. You can enter this mode from the Operation Menu screen
only.

1. Disc Type Auto Check

Disc Type

2. DVD SL 12 cm

3. DVD DL 12 cm

4. CD 12cm

5. LCD 12 cm

6. DVD SL 8 cm

7. DVD DL 8 cm

8. CD 8 cm

9. LCD 8 cm

0. Reset SLED TILT
TC. : : EMG. 00

CD 12 cm

Display when CD 12cm disc was selected

[10/0] Reset SLED TILT Reset the sled and tilt to initial position.
[1] Disk Type Check Judge automatically the loaded disc. As

the judged result is displayed at the
bottom of screen, make sure that it is
correct. If Disc Check Memory menu has
not been executed after EEPROM
default setting, the disc type cannot be
judged. In this case, return to the initial
menu and make a check for three types
of discs (SL, DL, CD).

[2] to [9] Select the loaded disc. The adjusted

value is written to the address of selected
disc. No further entry is necessary if [1]
was pressed.

1. Disc Type

Disc Type

1. Disc Type Auto Check

2. DVD SL 12 cm

3. DVD DL 12 cm

4. CD 12cm

5. LCD 12 cm

6. DVD SL 8 cm

7. DVD DL 8 cm

8. CD 8 cm

9. LCD 8 cm

0. Reset SLED TILT

-- SA. ------ SI. -- EMG. 00
DVD SL12cm

On this screen, select the disc type. T o select the disc type, press the
number of the loaded disc. The selected disc type is displayed at the
bottom. Pressing [1] key on the remote commander automatically
selects and displays the disc type. In case of wrong display, retry
“Disc Check Memory”. Also, opening the tray causes the set disc
type to be cleared. In this case, set the disc type again after loading.
In performing manual operation, the disc type must be set. Once
the disc type has been selected, the sector address or time code
display field will appear as shown belo w . These values are displayed
when PLL is locked.

Disc Type

1. Disc Type Auto Check

2. DVD SL 12 cm

3. DVD DL 12 cm

4. CD 12cm

5. LCD 12 cm

6. DVD SL 8 cm

7. DVD DL 8 cm

8. CD 8 cm

9. LCD 8 cm

0. Reset SLED TILT
SA. SI. EMG. 00

DVD SL 12 cm

Display when DVD SL 12cm disc was selected

2. Servo Control

Servo Control

1. LD Off R.Sled FWD

2. SP Off L.Sled REV

3. Focus Off

4. TRK. Off

5. Sled Off

6. CLVA Off

7. FCS. Srch Off

0. Reset SLED TILT
SA. SI. EMG. 00

DVD SL 12 cm

On this screen, the servo on/off control necessary for replay is
executed. Normally, turn on each servo from 1 sequentially and
when CLVA is turned on, the usual trace mode becomes active. In
the trace mode, DVD sector address or CD time code is displayed.
This is not displayed where the spindle is not locked. The spindle
could run overriding the control if the spindle system is faulty or
RF is not present. In such a case, do not operate CLVA.

[0] Reset SLED TILT Reset the Sled and Tilt to initial position.
[1] LD Turn ON/OFF the laser.
[2] SP Turn ON/OFF the spindle.
[3] Focus Search the focus and turn on the focus.
[4] TRK Turn ON/OFF the tracking servo.
[5] Sled Turn ON/OFF the sled servo.
[6] CLVA Turn ON/OFF normal servo of spindle

servo.

[7] FCS. Srch Apply same voltage as that of focus

search to the focus drive to check the
focus drive system.

b Sled FWD Move the sled outward. Perform this

operation with the tracking servo turned
off.

B Sled REV Move the sled inward. Perform this

operation with the tracking servo turned
off.

21

HCD-M90

The following menus are normally not used.

3. Track/Layer Jump

4. Manual Adjustment

5. Auto Adjustment

The persons who do not know well about these menus should not
use them.

6. Memory Check

EEPROM Data1

-– DL –­ CD LCD SL L0 L1

Focus Gain xx xx xx xx xx
TRK. Gain xx xx xx xx xx
FCS Balance xx xx xx xx xx
Focus Bias xx xx xx xx xx
TRV. Offset xx xx xx xx xx
L. F. Offset xx xx xx xx xx
EQ Boost xx xx xx xx xx
Mirror Time xx xx xx xx xx
_DOWN: Next Data
CLEAR: Default Set page.1/2

EEPROM Data1

-– DL –­ CD LCD SL L0 L1

RF Jitter xx -- xx xx xx
RF Level xx -- xx -- -­FE Level xx -- xx -- -­FE Balance xx -- xx -- -­TRV. Level xx -- xx -- -­Analog FRSW xx xx xx xx xx
PLL DacGain xx xx xx xx xx
_
UP : Prev Data
CLEAR: Default Set page.2/2

[DVD COLOR SYSTEM NTSC]

•The color system can be changed over NTSC or PAL.

Procedure:

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

2. Press the [FUNCTION] key to select “DVD”.

3. While pressing the x key, press the I/1 key.

4. Press the I/1 key to turn the power ON. The color system is
changed over.

[TUNER STEP CHANGE]

•A step of AM channels can be changed o ver between 9 kHz and

10 kHz.

Procedure:

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

2. Press the [FUCTION] key to select “TUNER” and press the

[TUNER AM] key to turn the “AM”.

3. Press the I/1 key to turn the set OFF.

4. While pressing [REPEAT/FM MODE] key, and press the I/1 key
and the display of liquid crystal display changes to “AM 9K
Step” or “ AM 10K Ste p”, and thus the channel step is changed
over.

This screen displays current servo adjusted data stored in the
EEPROM. Though adjusted data can be initialized with the

[CLEAR] key on the remote commander, they cannot be restored

after initialization. So, before clearing, make a note of the adjusted
data. For reference, the drive has been designed so that the gain
center value is 20 and offset value is 80. Other values will be in a
range of 10 to 80. If extreme value such as 00 or FF is set, adjustment
will be faulty. In such a case, check for disc scratch or cable
disconnection, then perform adjustment again.

[DVD TRAY LOCK MODE]

• This mode is used to unable to take sample disc out of tray in
the shop.

Procedure:

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

2. Press the [FUNCTION] key to select “DVD”.

3. While pressing the x key, press the Z DVD key.

4. The message “LOCKED” is displayed on the liquid crystal

display and the tray is locked. (Even if pressing the Z DVD key,
the message “LOCKED” is displayed on the liquid crystal
display and the tray is locked)

6. To release from this mode, while pressing the x key, press

the Z DVD key again.

7. The message “UNLOCKED” is displayed on the liquid crystal

display and the tray is unlocked.

22

SECTION 5

ELECTRICAL ADJUSTMENTS

HCD-M90

DVD SECTION

Note: During diagnostic check, the characters and color bars can be seen

only with the NTSC monitor. Therefore, for diagnostic check, use
the monitor that supports both NTSC and PAL modes

Instruments required:

1) Color monitor TV

2) Oscilloscope 1 or 2 phenomena, band width over 100 MHz,
with delay mode

3) DVD reference disc
HLX-501 (J-6090-071-A) (dual layer) (NTSC)
HLX-503 (J-6090-069-A) (single layer) (NTSC)
HLX-504 (J-6090-088-A) (single layer) (NTSC)
HLX-505 (J-6090-089-A) (dual layer) (NTSC)
HLX-506 (J-6090-077-A) (single layer) (PAL)
HLX-507 (J-6090-078-A) (dual layer) (PAL)

VIDEO LEVEL ADJUSTMENT

<Purpose>

This adjustment is made to satisfy the NTSC/P AL standard, and if
not adjusted correctly, the brightness will be too large or small.

Signal Color bars
Test point
Instrument Oscilloscope

Adjusting element RV501 (DVD board)
Specified Value 1.0

Procedure:

1. Press the I/1 key to turn the power on, and turn the

[FUNCTION] key to select “DVD”.

2. Adjust the RV501 on the MB board to attain 1.0

VIDEO OUT jack
(75 Ω terminated)

+ 0.04

Vp-p

– 0.02

1.0

+ 0.04
– 0.02

+ 0.04
– 0.02

Vp-p.

Vp-p

Procedure:

1. Press the I/1 key to turn the power ON, and turn the

[FUNCTION] key to select “DVD”.

2. Confirm that the S-Y level is 1.0 ± 0.05 Vp-p.

1.0 ± 0.05 Vp-p

Figure 5-2

CHECKING S VIDEO OUTPUT S-C

<Purpose>

This checks whether the S-C satisfies the NTSC Standard. If it is
not correct, the colors will be too dark or light.

Signal Color bars
Test point

S VIDEO OUT (S-C) jack
(75 Ω terminated)

Instrument Oscilloscope
Specified Value

286 ± 30 mVp-p (NTSC)
300 ± 100 mVp-p (PAL)

Procedure:

1. Press the

I/1 key to turn the power ON, and turn the

[FUNCTION] key to select “DVD”.

2. Confirm that the S-C burst is 286 ± 30 mVp-p (NTSC) or 300
± 100 mVp-p (PAL).

286 ± 50 mVp-p
(NTSC)
or
300 ± 100 mVp-p
(PAL)

Figure 5-3

Adjustment Location :

Figure 5-1

CHECKING S VIDEO OUTPUT S-Y

<Purpose>

Check S-terminal video output. If it is incorrect, pictures will not
be displayed correctly in spite of connection to the TV with a S­terminal cable.

Signal Color bars
Test point
Instrument Oscilloscope

Specified Value 1.0 ± 0.05 Vp-p

S VIDEO OUT (S-Y) jack
(75 Ω terminated)

– DVD BOARD (Side A) –

RV501

Video Level

Adjustment

IC503

23

HCD-M90

)

DECK SECTION

Note: Confirm each contents of this section first of all. If the results are

not satisfied, do the adjustment.

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

2. The adjustments should be performed in the order given in this service
manual.

3. The adjustments should be performed for both L-CH and R-CH.

0 dB=0.775 V

REC BIAS ADJUSTMENT

Procedure:

1. Mode: REC

FUNCTION: MD

MAIN board
AUDIO IN (MD/VIDEO) jack (SJ302)
L-CH, R-CH



50 mV (– 23.8 dB)




600

Ω

set

blank tape
CN-123

AF OSC

1) 315 Hz

2) 10 kHz

attenuator

2. Mode: Playback

recorded
portion

level meter

set

MAIN board
SPEAKER terminals (SJ301
L-CH, R-CH

+
–

3. Confirm playback the signal recorded in step 1 become speci-

fied values as follows.
If these values are out of specification values, adjust the RV101
(L-CH) and RV201 (R-CH) on the TC board to repeat steps
1and 2.

Specified values:Playback output of 315 Hz to playback

output of 10 kHz: ± 0.5 dB

Adjustment Location: TC board

– TC BOARD (Component Side) –

24

RV101 (L)

RV201 (R)




REC Bias



Adjustment






SECTION 6

DIAGRAMS

6-1. BLOCK DIAGRAM – DVD SERVO Section –

OPTICAL PICK-UP

BLOCK

(KHM-240AAA)

RF

2

RF IN

ATOP
ATON

HCD-M90

64
63

61

AIP

62

AIN

FNP
FNN

55
54

56

DIP

57

DIN

SIGO

59

RF+

A

(Page 26)

DVD/CD

DETECTOR

DVD/CD

LASER
DIODE

MODULE

INLIMIT

SENSOR

2-AXIS

DEVICE

FOCUS

COIL

DVD LD

CD LD

INLIM

FCS+
FCS–

SW

A
B
C

D

E

F
G
H

VC

AUTOMATIC POWER

CONTROL (FOR DVD)

Q001

AUTOMATIC POWER
CONTROL (FOR CD)

PD

Q002

D+3.3V

14

A

13

B

12

C

11

D

7

A2

8

B2

9

C2

10

D2

15

E

16

F

17

G

18

H

19

VC

25

DVDLD

26

CDLD

21

DVDPD

22

CDPD

24

LDSELO

FOCUS/TRACKING COIL DRIVE,

SPINDLE/SLED/LOADING MOTOR DRIVE

42

37
36

IC401

FOCUS COIL

DRIVE

DVD/CD RF AMP,

FOCUS/TRACKING ERROR AMP

IC001

40

48

1

TZIN

MIRR

TZC

SRD

SWD
SCLK
SDEN

DFT

MON

LDON

VCI

42

FE

41

TE

40
36

PI

35

PII

33
37

45
46
47
48

38

44

39

27

136

ADC1

135

ADC0

137

ADC2

197

MIRR

196

TZC

173

GIO6/SDI

174

GIO7/SDO

175

GIO8/SCK

180

GIO13

185

DFCTI

144

ADC7

172

GIO5/PGIN

166

GIO0/INT2

143 ADC6
142 ADC5

PDM2

204

PDM3

205

SERVO DIGITAL

SIGNAL PROCESSOR

IC302 (1/2)

• SIGNAL PATH

: DVD PLAY

: CD PLAY

XLDON

TRACKING

COIL

MM

(SPINDLE)

MM

(SLED)

TRK+
TRK–

SPM+
SPM–

SLA+
SLA–

SLB+
SLB–

M901

(LOADING)

35
34

46

47

27
28

32
31
30
29

MM

25
24

TRACKING COIL

DRIVE

–
+

SPINDLE MOTOR

DRIVE

SLED MOTOR

DRIVE

TSD-M

POWER SAVE

LOADING MOTOR

DRIVE

3
4

19

5

45

13

21

7

10

20

22

39

16
17

15

PDM0

202

PDM1

203

ADC3

139

ADC4

140

MDSO

159

MDPO

161

GIO1/INT3

167

PWM0

198

PWM1

199

GIO2/INT4

7

168

176 GIO9/FGREF
177 GIO10/FGIN

200 PWM2

HINT

HCS

XDSPRST

22
24

156

XSDPIT

XSDPCS

XDRVMUTE

XRST

XLDON

XSDPIT, XSDPCS,

XDRVMUTE

C

(Page 26)

B

(Page 27)

2525

HCD-M90

6-2. BLOCK DIAGRAM – DVD MAIN Section (1/2) –

A

(Page 25)

D

(Page 27)

E

(Page 27)

RF+

D-RAM

IC303

33MARP, 33MAVD,
27MAVD, 512FSAVD

TRST

A0 – A9 I/O0 – I/O15

WE

OE

RAS
UCAS
LCAS

MEMD0 –

MEMD15

2 – 5, 7 – 10,

41 – 44, 46 – 49

MEMA0 –

MEMA9

27 – 32

21 – 24,

17
33
18
34
35

33MARP

RFIN1

131

RFIN2

128

44 – 51, 53 – 60

27 – 36

MA0 – MA9 MD0 –MD15

38

XMWR
XOE

42

XRAS

41

XCAS

39

CLKIN

182

MCKI

187

SCKI

189

XARPRST

157

HD8 – HD15

ARP

IC302 (2/2)

11 – 15, 17 – 192 – 9

A0 – A7D0 – D7

HA0 – HA7

SOI0 –SOI7

SD0 – SD7

73 – 76, 78 – 81

SDCK

68 41

XSHD

69 44

XSRQ

70 46

XSAK

71 45

SDEF

72 43

DATA

62 23

BCLK

63 25

LRCK

65 26

DOUT

66 22

TDO

195 118

TDI

193 119

TCK

194 120

TMS

192 121

TRST

191 122

(FOR JTAG)

XINT

21

XCS

23

XWAT

25

XWR

207

XRD

208

33MAVD
27MAVD

512FSAVD

DTI0 – DTI7

31 – 34, 36 – 39

ICLKI
ISTARTI
IREQO
IVALI
IERRI

CDIN1I
CDBCKI
CDLRKI
CDIN2I

TDI
TDO
TCK
TMS
TRST

CRPCLKI

29

CLKI

180

SCLKIN

182

ACLK

12

DATA BUS

ADDRESS BUS

COMPOUT

YOUT
COUT

VREFI

ACH34
ACH56

BCKO

HAD23
HAD22

HIREQ0

HCSB

HRWB

220 221 224 231

HWAITOB

80
74
77

84

14ACH12
15
16
19
18LRCKO

DO

20

AV DECODER

IC503

190
191

223

RSTB

V
Y
C

RV501

VIDEO
LEVEL

ACH12
ACH34
ACH56

BCK

LRCK

HD0 – HD15 HAD0 – HAD21

223 – 235, 237 – 240,

2 – 5, 7 – 10

HD0 – HD15

DQ0 – DQ15

2, 3, 5, 6, 8, 9, 11, 12, 39,

40, 42, 43, 45, 46, 48 ,49

177, 174, 171, 168, 165, 163,
160, 158, 157, 159, 162, 164,

218 – 215, 213 – 210, 208 – 205,

203 – 200, 198 – 195, 193, 192

167, 170, 173, 176

SDDQ0 – SDDQ15

HA0 – HA21

16MB SDRAM

IC504

A0 – A11

21 – 24, 27 – 32,

20, 19

DM ACK1

DM REQ1

226 227 228 229

DACK0

DREQ0

CLK

CKE

DQML

35 34 14 36 15 16 17 18

SDRAM ADDRESS BUS

134, 131, 128, 125, 124,
127, 130, 133, 136, 139,

SDAD0 – SDAD11

DM ACK0

DM REQ0

DACK1

DREQ1

DATA BUS

ADDRESS BUS

DQMUWECAS

CLK

CKE

DQML

DQMUWECAS

SDRAM DATA BUS

137, 140

OE

14

RAS

CS

2, 3, 5, 6, 8, 9, 11, 12, 39,

RAS

144

SDCS0B

PROGRAM ROM

IC108

D0 – D15

15, 17, 19, 21, 24, 26,
28, 30, 16, 18, 20, 22,

25, 27, 29, 31

HD0 – HD15

DQ0 – DQ15 A0 – A11

40, 42, 43, 45, 46, 48 ,49

A0 – A19, HA21

11 – 4,

42 – 34, 3,

2, 43, 44

HA1 – HA21

12

16MB SDRAM

IC505

21 – 24, 27 – 32,

20, 19

CE

ACH12, ACH34, ACH56,

CLK

CKE

DQML

CLK

CKE

CKE

DQML

SDCKEO

DQML

DQMUWECAS

WE

DQMU

SDDQM0

SDDQM1

DQMUWECAS

CAS

RAS

SDWEOB

SDCKCOB

35 34 14 36 15 16 17 18

CLK

149 146 155 154 152 151 147

SDCLKO

• SIGNAL PATH

: DVD PLAY

: CD PLAY

: DVD/CD PLAY (AUDIO)

: DVD/CD PLAY (VIDEO)

: DVD/CD PLAY (DIGITAL OUT)

BCK, LRCK

RAS

RAS

143

SDRASOB

V, Y, C

SPDIF

CS

SDCS1B

H

G

I

(Page 27)

(Page 27)

(Page 27)

(Page 27)

(Page 25)

XRST

F

DACK0

DACK1

DREQ0

DACK0

DREQ0

DREQ1

49504647

DACK1

DREQ1

XRST

C

36 71 67 62 17

XARPRST

70

XRD

CS4X

XWRH

XWAIT

INT1

35 16 61 60

INT0

XRST

CS3X

DVD SYSTEM CONTROLLER

IC103 (1/2)

CS2X

HD0 – HD15

85 – 100

HD0 – HD15

HA0 – HA21

102 – 109, 111 – 118,

120, 1 – 5

HA0 – HA21

SDA
SCL

WP

58

CS0X

EEPROM

IC101

38
39

5

SDA

6

SCL

7

7

WP

2626

6-3. BLOCK DIAGRAM – DVD MAIN Section (2/2) –

V, Y, C

H

(Page 26)

SPDIF

I

(Page 26)

53

X101

16.5MHz

X1

54

X0

48/44.1k

X102

27MHz

CLOCK GENERATOR

IC102

8 15

7

1481

XTO

XTI

FSEL

33-1OUT

33-2OUT
27-1OUT

512-1OUT

HCD-M90

• R-CH : R-ch is omitted due to same as L-ch.

• SIGNAL PATH

VIDEO BUFFER

V

Y

C

33MARP

13

3

10

9512-2OUT

33MAVD
27MAVD

512FSAVD

IC701

MUTE

1

OUTC1
OUTC2
OUTB1
OUTB2
OUTA1
OUTA2

10

9
13
12
15
14

2

3

4

1

OPTICAL

TRANSMITTER

IC321

7

INC

4

INB

2

INA

J701

VIDEO OUT

J700

S VIDEO OUT

OPTICAL

DIGITAL OUT

: DVD/CD PLAY (AUDIO)

: DVD/CD PLAY (VIDEO)

: DVD/CD PLAY (DIGITAL OUT)

33MARP, 33MAVD,

27MAVD, 512FSAVD

D

(Page 26)

ACH12, ACH34, ACH56,
BCK, LRCK

G

(Page 26)

XRST

F

(Page 26)

XLDON, XSDPIT, XSDPCS
XDRVMUTE

B

(Page 25)

S1

DISC TRAY

OPEN/CLOSE

DETECT

CLOSE

OPEN

XLDON
XSDPIT
XSDPCS
XDRVMUTE

56

CKSW1

57

OCSW1

84

XLDON

18

INT2

63

CS5X

48

XDRVMUTE

DVD SYSTEM

CONTROLLER

IC103 (2/2)

VESCS/X39CS

SO1

SI1

SC1

SO2

SI2

29
28
38
80

32

31

BCK, LRCK

ACH12
ACH34
ACH56
BCK
LRCK

CN103

13
17
14
11

48

12TXD

RXD

SDI0

6

SDI1

7

SDI2

8

BCKI

9

LRCKI

5

SI
SO
SCK
XCS

XRST

INTERFACE

(FOR TEST)

AUDIO

IN

SERIAL

INTERFACE

DSP

MODLE

TEST

INTERFACE

AUDIO

OUT

INTERFACE

AUDIO DIGITAL

SIGNAL PROCESSOR

IC801

SDO0

MCLK

33 SCLK

PLL LOCK

DETECT

Q306, 307

D/A CONVERTER

MUTE

12

Q303

IC302

PROCESSOR

INTERPOLATOR

AUDIO FEATURE

D/A

CONVERTER

CIRCUIT

NOISE SHAPER

VOUT L

18

VOUT R

22 R-CH

1 1 DAC RESET

RESET

15

SPDIF0

IEC958

BCK

LRCK

IC802 (1/3)

37

3

17

62

IC802 (2/3)

35

IC802 (3/3)

IC301 (3/3)

35

62

IC301 (2/3)

17

IC301 (1/3)

DECODER

IIS-IN-SD

7

IIS-IN-BCK

8

IIS-IN-WS

9

DATA

INPUT/

OUTPUT

INTERFACE

CIRCUIT

IIS-EXT-SEL20SPDIFSEL

19

DATA SELECT

SWITCH

34 PLL-LOCK DET

SYSTEM CONTROLLER

IC306 (1/4)

79 INPUT SEL

DVD-L

J

(Page 29)

E

(Page 26)

TRST

SO0

SC0

XIFCS

MAMUTE

INT4

XFRST

SI0

26
25
27
51
83
20
76

36

XLT

35

DATA

37

CLK

19

SYSCS

56

SENS

54

LD ON

60

XFRST

2727

HCD-M90

6-4. BLOCK DIAGRAM – TUNER/TAPE DECK Section –

TU1

(AEP, UK)

FM75Ω

FM75Ω

(EXCEPT AEP, UK)

AM

ANENNA

FM/AM TUNER UNIT

L-CH

FM ANT

ANT GND

ANT GND

AM ANT

R-CH R-CH

TUNED

CK

CE

DO

4

3

5

9

DI

8

10

7

(AEP, UK)

TU

+9.5V

57

23

27

22

25

TUNED

ST DOUT

ST CLK

ST CE

ST DIN

SYSTEM CONTROLLER

IC306 (2/4)

CAPM CONT1

BTRG

PLAY SW

END SW

TC SW

TU-L

(TAPE DECK BLOCK)

59

58

38

90

91

CAPSTAN/REEL

MOTOR DRIVE

Q341, 343

TRIGGER

PLUNGER DRIVE

Q342, 344

MM

(CAPSTAN/REEL)

K

(Page 29)

L-CH

R-CH

HRPE901

(RECORD/PLAYBACK/ERASE)

ERASE

RV201

REC BIAS

(R)

MUTING

Q100, 101

REC BIAS

BIAS OSC

T401

DET AMP

Q302

RV101

(L)

1 4

FM DET MUX

(AEP, UK)

R-CH

R-CH

X301

4.332MHz

R-CH

REC BIAS

Q402, 403

SWITCH

X1 X0

13 14

MUTING

CONTROL SWITCH

Q404, 405

RDATA

COM +8V

2

16

RCLK

RDS DECODER

IC326

T101

BIAS

TRAP

34

21

BIN (L)

REC-OUT
(L)

REC/PB EQ AMP, ALC

IC401

EQ

R-CH

ALC

R-CH

EQ-OUT (L)

REC-IN

2

18

(L)

ALC

(L)

RDS DATA

RDS-INT

28

24

23

ALC43REC/PB

REC MUTE39LINE MUTE

80

41

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

11

1513 14

A/B

ALC

MUTE

REC-MUTE

MUTE

TAI (L)

27

PB-OUT

(L)

26

SIGNAL PATH

: TUNER (FM/AM)

: TAPE PLAY

: REC

TC-L

REC-L

L

M

(Page 29)

(Page 29)

BIAS OSC

Q401

2828

6-5. BLOCK DIAGRAM – AUDIO Section –

HCD-M90

(Page 28)

(Page 27)

(Page 28)

(Page 28)

REC-L

M

DVD-L

J

TC-L

L

TU-L

K

AUDIO IN

MD (VIDEO)

HEADPHONE AMP

IC324

L4

11

L3

INPUT
SELECT
SWITCH

LSELO

10

12

L2

13

L1

SJ302

L

R

R-CH

14

LIN

9

CPU

INTERFACE

DI

1

8 10 4

9 11 3

CL

30

VOLUME

CONTROL

INPUT SELECT SWITCH,

ELECTRICAL VOLUME,

CE

2

INVERTER

CONTROL

TONE CONTROL

IC302

(1/2)

TONE

IC323

LOUT

5

MUTING

Q100

R-CH

MUTING

CONTROL SWITCH

Q312, 313

POWER ON

MUTING

Q330

COM +12V

D309

IN+

3

4

IN+
MUT

STANDBY/MUTE

MUTE STBY

R-CH

10

12 2

13 1

9

R-CH

MOS GAIN &

LEVEL SHIFT

ING STAGE

R-CH

INVERTER

IC302

(2/2)

MUTING

Q408, 409

OUTPUT

MOS

STAGE

SHORT

CIRCUIT

PROTECTION

POWER AMP

IC101

OUT

14

R-CH

DC DETECT

Q310, 311

R-CH

R-CH

J301

PHONES

+

SJ301

L

R

SPEAKER

IMPEDANCE

USE 6 – 16Ω

–

–

+

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

SIGNAL PATH

: DVD/CD PLAY (AUDIO)

: TUNER (FM/AM)

: TAPE PLAY

: REC

: MD (VIDEO)

87 88 86

VOL-SDA

AMP SCK

AMP CE

81

LINE MUTE

SYSTEM CONTROLLER

IC306 (3/4)

89

STK MUTE

84

STK PWR

50

H/P DETECT

100

DC DETECT

2929