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HT-DV40H

2 – 1

CD-ES700/CD-ES77

CD-ES700/CD-ES77

Service Manual

CD-ES700/CD-ES77

Market

E

 

Since this DVD system incorporates the following
automatic adjustment functions, readjustment is
not needed when replacing the pickup. Therefore,
different PWBs and pickups can be combined
freely. Each time a disc is changed, these
adjustments are performed automatically.
Therefore, playback of each disc can be performed
under optimum conditions.

1) Offset adjustment (The offset voltage between the

head amplifier output and the VREF reference
voltage is compensated inside the IC.)

* Focus offset adjustment

* Tracking offset adjustment

2) Tracking balance adjustment

3) Gain adjustment (The gain is compensated inside

the IC so that the loop gain at the gain crossover
frequency will be 0 dB.)

* Focus gain adjustment

* Tracking gain adjustment

HT-DV40H

2 – 2

1.1.Entering the Test Mode
While holding down both the n button and the POWER button of the main unit from the AC Supply Off state, turn the
AC Supply ON to enter the Test Menu Mode.

                 [ < ] + [ POWER ] [ AC ON ]

1.2.TEST Mode Processing
* When entering the TEST Mode, the ROM version are displayed as follows.
* System micom version on the FL display upper row : HDH**** ( **** : Version No )
* DVD Firmware version on the FL display lower row : SRCV** ( ** : Version No )

1.3.TEST Mode button
* Press direct designation button or turn VOL Jog during the version display to enter the specified TEST Mode as

shown below.

* exit test mode by POWER key during micom version display

1.4.Canceling TEST Mode
Press the ON / STAND-BY button in each TEST Mode.

TEST 15

DVD TEST

Turn VOL Jog to select "DVD TEST" during version 

display, then press [STOP] key to enter.

TEST 16

FIRMWARE UPDATE TEST

Direct press [PLAY] key during version display.

HT-DV40H

2 – 3

[STEP 1]

[STEP 2]

[STEP 3]

[STEP 4]

[STEP 5]

[STEP 6]

[STEP 7]

[STEP 8]

[STEP 9]

[STEP 10]

[STEP 11]

At testmode menu, select 

"DVD TEST MODE" by 

turning VOL Jog UP and Down

and press [STOP] key to enter 

dvd test mode

Press [DVD/CD] key at remote control to 

turn ON CD Laser

Press again [DVD/CD] key at remote

control, this time to turn ON DVD 

Laser

"CD_LASER_ON" appear in unit 

display

Press again [DVD/CD] key at remote

control, this time to turn OFF the 

laser

Press POWER key to exit the test 

mode.

EXIT the test mode

END

"DVD TEST", will appear in 

unit display

"DVD_LASER ON" appear in unit 

display

"LASER OFF" appear in unit 

display

HT-DV40H

2 – 4

After enter testmode menu, press 

[PLAY] key at main unit to select 
"FW UPDATE TEST MODE" to 

enter this mode

After ENTER key is pressed, 

unit display at lower row will show 

"_UPDATING_" blinking display

Press ENTER 

key to start F/W upgrade.

After update process completed,

new firmware version will be 

displayed in unit display lower row as

"FW_SRCV_

ϠϠ"

END

Plug in USB device

User press [POWER] key to 

exit this testmode

When enter firmware upgrade menu,

unit display at  lower row change to 
"FW_SRCV_

ϠϠ" blinking at 2Hz 

Note 2:

Make sure there is "DVDROM.bin" file inside the usb device

Note 3:

"_UPDATING_" blinking display means DVD 

firmware upgrade is in progress.

During firmware upgrading is in progress, do not 

POWER OFF the unit!

Note 1:

To enter testmode, during AC supply off 

condition, whilst pressing down STOP key and 

POWER key together, turn ON AC Supply.

" FW_UPDATE_ " will appear on upper row of 

unit display and current firmware version DVD 

will appear on lower row of unit display as " 

FW_SRCV ** "