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0-2-3. ROM Check Sum
Check sum is calculated. (4 digits hexadecimal number)
0-2-4. Model Type
Model name is displayed. (MHG-GN XXX)
0-2-5. Region
Model destination code is displayed. (2 digits number)
0-3. EEPROM Check
0-3-1. Sampling Check
EEPROM check at every 64 words.
It compares read data with write data of each address. When there
are discrepancies between two data, it displays error.
0-3-2. Detail Check
EEPROM check at every 1 word.
It compares read data with write data of each address. When there
are discrepancies between two data, it displays error.
0-4. GP I/O Check
Pull up/down setting check of the DVD system processor (IC207)
pin 150, 151 and 154 (for clock setting port).
0-5. SD Bus Check
SD bus data check between DVD decoder (IC701) and D-RAM
(IC706).
0-6. Video Check
Output the color bars for video level adjustment.
1. Drive Auto Adjustment
On the Test Mode Menu screen, press the 1 button on the remote
commander, the Adjustment Menu will be displayed.
## Drive Auto Adjustment ##
Adjustment Menu
0. ALL
1. DVD-SL
2. CD
3. DVD-DL
Normally, [10/0] is selected to adjust DVD (single layer), CD and
DVD (dual layer) in this order. But, individual items can be adjusted
for the case where adjustment is suspended due to an error. In this
mode, the adjustment can be made easily through the operation
following the message displayed on the screen. The disc used for
adjustment must be the one specified for adjustment.
1-0. ALL
Press the [10/0] button on the remote commander, and the servo set
data in EEPROM will be initialized. Then DVD-SL disc, CD disc
and DVD-DL disc are adjusted in this order. Each time one disc
was adjusted, it is ejected. Replace it with the specified disc
following the message. You can finish the adjustment by pressing
the [RETURN] button on the remote commander.
Exit: RETURN
Note: During adjustment of each disc, the measurement for disc type judg-
ment is made. As automatic adjustment does not judge the disc
type unlike conventional models, take care not to insert wrong type
discs. Also, do not give a shock during adjustment.
1-1. DVD-SL (single layer)
Press the 1 button on the remote commander and insert a DVD
single layer disc following the message. Then the adjustment will
be made through the steps below, then adjusted values will be written
to the EEPROM.
DVD Single Layer Disc Adjustment Steps:
1.
Sled tilt reset
2.
Disc check memory SL
3.
Wait 300 msec
4.
Set disc type SL
5.
LD on
6.
Spindle start
7.
Wait 1 sec
8.
Focus servo on 0
9.
Auto track offset adjust
10. CLVA on
11. Wait 500 msec
12. Tracking on
13. Wait 1 sec
14. Sled on
15. Check CLV on
16. Auto LFO adjust
17. Auto focus offset adjust
18. Auto tilt position adjust
19. Auto focus gain adjust
20. Auto focus offset adjust
21. EQ boost adjust
22. Auto loop filter offset adjust
23. Auto track gain adjust
Search Check
24. 32 track jump forward
25. 32 track jump reverse
26. 500 track jump forward
27. 500 track jump reverse
28. All servo stop
29. EEP copy loop
1-2. CD
Press the 2 button on the remote commander and insert a CD disc
following the message. Then the adjustment will be made through
the steps below, then adjusted values will be written to the EEPROM.
CD Adjustment Steps
1.
Sled tilt rest
2.
Disc check memory CD
3.
Wait 500 msec
4.
Set disc type CD
5.
LD on
6.
Spindle start
7.
Wait 500 msec
8.
Focus servo on 0
9.
Auto track offset adjust
10. CLVA on
11. Wait 500 msec
12. Tracking on
13. (TC display start)
14. Wait 1 sec
15. Jitter display start
16. Sled ON
17. Check CLV on
18. Auto loop filter offset adjust
HCD-GN90D/GN100D
21
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