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17

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

. (Be carefull of the two claws.)

2

 tray

A

1

 floating screw (PTPWHM 2.6)

2

 flexible flat cable

     (9 core)

3

 flexible flat cable

     (26 core)

4

 step screw (L)

8

 three insulators

9

 optical device

5

 two step screws (M)

6

 holder (KHM-240)

7

18

• 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.

• 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 

[FUNCTION]

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 version, TM version, TC version, 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 

[CD SYNCHRO]

 key, and the key check mode is activated.

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

0

J0 V

0”. Each time a key is pressed, “K” value increases.

However, once a key is pressed, it is no longer taken into account.

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

step 2, or disconnect the power cord.

• 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/TREBLE]

key on the remote commander is pressed.

4. The display changes “VOLUME MAX” each time 

[VOLUME +]

key is pressed and “VOLUME MIN” each time 

[VOLUME --]

 key

is pressed.

• 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.

• 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.

• 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).

Procedure:
1. Connect a TVmonitor to this set.
2. Press the

I/1

key to turn the power ON.

3. Press the 

[FUNCTION]

 key to select “DVD”.

4. Press three keys

x

, 

[DSG]

, and 

[DIRECTION]

 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

19

The same contents as board detail check by serial interface can be
checked from the remote commander.
On the Test Mode Menu screen, 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

_

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

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

_

(2-2) 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.

(3-2) 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.

(4-2) 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.

20

(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 4-
or 5-digit number from the remote commander, and press
the 

[ENTER]

 on the remote commander. The test is con-

ducted 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.

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 (ad-
dress 0xC6) in ARP (IC302), then they 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 im-
plies 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 ac-
cord. 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.

(6-2) 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.