Cautions To Be Taken During Servicing; Recovery After The Dvd Player Is Repaired; Dvd Player Firmware Version Upgrade Process; Firmware Version Upgrade Process By Using Disc And Recovery Process - Panasonic SA-VK91DGCS Service Manual

SA-VK91DGCS / SA-VK91DGCP

16 Cautions To Be Taken During Servicing

16.1. Recovery after the dvd player is repaired

· When Flash ROM or DVD Module P.C.B. is replaced, carry out the recovery processing to optimize the drive. Playback the
recovery disc to process the recovery automatically.
· Recovery disc (Product number=RFKZD03R005)
· Performing recovery
1. Load the recovery disc (Product number: RFKZD03R005) to the player and run it.
2. Recovery is performed automatically. When it is finished, a message appears on the screen.
3. Remove the recovery disc.
4. Turn off the power.

16.2. DVD Player Firmware Version Upgrade Process

Firmware of DVD player may upgrade to conform to improvement of its performance and quality including operational range,
playability of non-standardized discs, etc. The version upgrade disc contains the recovery function, and the recovery disc is not
necessary.
Note:
Version upgrade process cannot be complete if the AC power is cut off due to power failure and other occasions during the
process. If this occurs, replace FLASH ROM IC and restart version upgrade. Version upgrade disc number is informed when
ordered.
16.3. Firmware Version Upgrade Process by Using Disc and Recovery
Process
· Recovery process
· Firmware version upgrade process
Both of the above procedures automatically start when the recovery disc is replayed.General CD-R disc allows version upgrade
process and recovery process, making version upgrade through disc simple.
Recovery process: Optimization process of player after replacement of FLASH ROM, EEPROM, or module circuit board
Version upgrade process: Renewal of firmware for improvement of operational range and performance
16.3.1. Self-Diagnosis Function
· Total usage time display (spindle motor, DVD/CD laser)
· ADSC internal RAM display
· Others: Last error count......20 items
Efficiency of failure diagnosis is expected to improve by using the above functions together with the repair process.
[Purpose of Use]
Total usage time display: used for estimating a failure due to exhausted spindle motor, laser, or other parts.
ADSC internal RAM display: used for deciding servo system failure according to servo learning values.

16.4. Using Recovery Disc

16.4.1. Recovery Process
1. Insert the recovery disc (RFKZD03R005) to the player to replay.
2. The recovery process automatically starts, and a message of completion prompts on the screen.
3. Remove the disc.
4. Turn off the power.
16.4.2. Version Upgrade Process
1. Insert the recovery disc to the player to replay.
2. The version of player is automatically checked and prompts if necessary.
3. Select version upgrade process using the cursor keys on the remote controller unit. (Select YES or NO)
4. a. If YES is selected, the process starts.
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