Saturday, February 27, 2016

PANASONIC DMR-EX75 - DMR-EX85 - DMR-EX75EB - DMR-EX85EG – Manual disc ejecting - Service mode – Child lock reset – SMPS power supply schematic diagram - DMR Repair and service

                                                Category: DMR Repair and service 

Contents of this article 
  • Accessing service mode 
  • Power supply schematic diagram 


PANASONIC
DMR-EX75 - DMR-EX85 - DMR-EX75EB - DMR-EX85EG 

TAKING OUT THE DISC FROM DVD-DRIVE UNIT WHEN THE DISC CANNOT BE EJECTED BY OPEN/CLOSE BUTTON
FORCIBLE DISC EJECT WHEN THE POWER CAN BE TURNED OFF
1. Turn off the power and press [STOP], [CH UP] keys on the front panel simultaneously for 5 seconds.
WHEN THE POWER CAN NOT BE TURNED OFF
1. Press [POWER] key on the front panel for over 10 seconds to turn off the power forcibly and press [STOP] [CH UP] keys on the front panel simultaneously for 5 seconds.
WHEN THE FORCIBLE DISC EJECT CAN NOT BE DONE
1. Turn off the power and pull out AC cord.
2. Remove the Top Case.
3. Put deck so that bottom can be seen.
4. Push SLIDE CAM by Eject Pin (JZS0484) or minus screw driver (small) in the direction of arrow to eject tray slightly.

5. Put deck upward and push out Tray by Eject Pin (JZS0484) or minus screw driver (small)

SELF-DIAGNOSIS FUNCTIONS
Self-Diagnosis Function provides information for errors to service personnel by “Self-Diagnosis Display” when any error has
occurred.
U**, H** and F** are stored in memory and held.
You can check latest error code by transmitting [0] [1] of Remote Controller in Service Mode.
Automatic Display on FL will be cancelled when the power is turned off or AC input is turned off during self-diagnosis display is ON.
SPECIAL MODES SETTING
TEST Mode
*All the main unit’s parameters (include tuner) are initialized.
Press [STOP], [CH UP] and [OPEN/CLOSE] keys simultaneously for five seconds when power is off.
Rating password
The audiovisual level setting password is initialized to “Level 8”.
Open the tray, and press [REC] and [PLAY] simultaneously for 5 seconds.
Service Mode
Setting every kind of modes for servicing *Details are described in “Service Mode
When the power is off, press [CH UP], [OPEN/CLOSE] and [REC] keys simultaneously for 5 seconds.
Forced disc eject
Removing a disc that cannot be ejected. The tray will open and unit will shift to P-off mode.
*When Timer REC is ON or EXT-LINK is ON, execute " Forced disc eject " after releasing Timer REC or EXT-LINK.
*This command is not effective during "Child lock" is ON.
While Demonstration Lock is being set, this Forced disc eject function is not accepted.
If this command was executed while TIMER REC is being set, TIMER REC setting will be kept.
When the power is off, press [STOP] and [CH UP] keys simultaneously for 5 seconds.
Child lock/unlock
Set or release “Child Lock”.
Press [ENTER] and [RETURN] by remote controller simultaneously until [X-HOLD] is displayed.
Forced power-off
When the power button is not effective while power is ON, turn off the power forcibly. *When Timer REC is ON or EXT-LINK is ON, execute “Forced Power-off” after releasing Timer REC or EXT-LINK.
Press [Power] key over than 10 seconds.
Aging 
Perform sequence of modes as * Aging Description shown below continually.
Caution:
All programs in DVD-RAM disc will be deleted because Formatting is done once in Aging process.
When the power is ON, press [STOP], [POWER] and [OPEN/CLOSE] simultaneously for over 5 seconds and less than 10 seconds.
NOTE1:
If Unit has not turned into Aging mode by operations shown above, execute TEST MODE once and re execute operation shown above. (*All the main unit’s parameters include tuner are initialized by TEST mode.)
NOTE2:
If the unit has hung-up because of pressing keys for over 10 seconds, once turn off the power, and re execute this command. *When releasing Aging mode, press [POWER] key.
SMPS POWER SUPPLY CIRCUIT 
CLICK ON THE IMAGE TO ZOOM IN