Hitachi DVP705E – Self diagnosis – Power supply Regulator circuit diagram - 2SK2563

Hitachi DVP705E - DVP705EUK - DVP705U -= SMPS schematic – Self Diagnosis function details

Self-Diagnosis Function

This DVD player has two types of self-diagnosis function for differing operation methods:
(1) Self-diagnosis started automatically when power is turned on
(2) Self-diagnosis activated when test mode is selected by pressing buttons on player
Conditions for engaging self-diagnosis
The following conditions must be satisfied to start and complete self-diagnosis:
(1) No disc loaded.
(2) Power cord unplugged after self-diagnosis is complete.

Self-diagnosis started automatically when power is turned on
(1) ATAPI bus not yet connected
If DVD-ROM drive is not connected, “Err 0009” will appear in the display of player.
Unplug the power cord and check the connection of ATAPI cable.
(2) When program is not yet stored in flash memory on DEC board:
Tray will open, close and then open.
Unplug the power cord and check the DEC board.

Self-diagnosis engaged by pressing the buttons on player
Simultaneously hold down the SKIP >> and POWER buttons on player for 5 seconds, and then press the PLAY button.
The player will enter the automatic DEC board self-diagnosis mode.
If the DEC board is normal, “0001” will appear in the display for 2 seconds, and then “0002” for 2 seconds: This indication will be repeated.
If error is detected, “Err 01” or “Err 02” will appear.
Err 01: R/W error, 4 Mbit connected to SH
Err 02: R/W error, 32 Mbit connected to ZIVA
Self-diagnosis will stop when it first detects error.
That is, if “Err 01” is displayed, item for “Err 002” will not be diagnosed.

Simultaneously hold down the << SKIP and POWER buttons on player for 5 seconds.
The player will enter the selective DEC board self-diagnosis mode.
When this mode is entered, the appropriate menu should appear on the TV screen.
If this screen does not appear, there is a problem in the display system: Carefully check the circuits related to video encoder.

TEST MENU
VIDEO DAC
BUTTON CODE
COLOR BAR
AUDIO DAC            FL FR C SL SR SUB
STRING TEST

To change diagnosis items, while holding down the SKIP << button on player, press the POWER button.
The following describes each diagnosis item:
(1) VIDEO DAC
If the TEST MENU screen appears, this item is judged normal.
Indication in display: 10 00010
(2) BUTTON CODE
The codes of buttons on remote control and player will appear in the display.
Indication in display: 20 ***** (*****: 5-digit button code)
(However, the codes of POWER button and a simultaneously pressed button are excluded.)

The codes of buttons with the same functions are identical:
PLAY/PAUSE : 10104
SKIP >> : 00002
SKIP << : 00003
STOP : 00111
OPEN : 00009
DISPLAY : 00011

COLOR BAR
The color bar will appear.
Each time SKIP >> is pressed, the following display conditions will be established in sequence:
1) NTSC standard playback (Y, Pb, Pr)
Indication in display: 30 0000
2) NTSC Letterbox display
Indication in display: 30 0001
3) NTSC Squeeze display
Indication in display: 30 0002
4) PAL50 (RGB on) Squeeze display
Indication in display: 30 0003
5) PAL (RGB on) standard playback
Indication in display: 30 0004
Pressing SKIP >> at this time will return to 1).

AUDIO DAC
White noise is output from each audio channel.
Indication in display: 40
Each time SKIP >> is pressed, the audio output channel will switch as follows:
FL > FR > C > SL > SR > SUB > FL > ...
Each time SKIP << is pressed, the audio output channel will switch as follows:
SUB > SR > SL > C > FR > FL > SUB > ...

STRING TEST
The on-screen information (OSD) used by DVD player is displayed.
Indication in display: 50
Each time SKIP >> is pressed, the contents of string will switch as follows:
OPEN > CLOSE > PLAY > STOP > PAUSE -> TITLE > CHAPTER > ...
Each time SKIP << is pressed, the contents of string will switch as follows:
CHAPTER > TITLE > PAUSE > STOP > PLAY > CLOSE > OPEN > ...

Flash ROM software version display, error display, etc.
Press the VIRTUAL SURROUND button on player and, while holding it down, simultaneously press and hold down the POWER button for 5 seconds.
The software version of flash ROM will appear (P00xx, xxx).
Pressing the cursor up/down buttons on remote control or player will display the player internal data.
The cursor left/right buttons on remote control or player are used for P00 (-P5) <-> P10 (-19) and P10 (-19) <-> P20 (-P99)

If “no PLAY” appears in the display
The following lists the possible causes of “no PLAY” display (and “Disc Error” in OSD):
a-f of “aP20 bcdef” that appears in the display are defined in bits (displayed in octal notation).

SMPS Circuit Diagram