Sony HCD-LF1 Service Manual page 26

HCD-LF1
Check Items List:
0-2. Version
0-2-1. All
0-2-2. Revision
0-2-3. ROM Check Sum
0-2-4. Model Type
0-2-5. Region
0-3. EEPROM Check
0-3-1. Sampling Check
0-3-2. Detail Check
0-4. GP I/O Check
0-5. SD Bus Check
0-6. Video Check
0-2. Version
0-2-2. Revision
The revision number of ROM (IC206) that the program
for the DVD system processor (IC207) is stored.
0-2-3. ROM Check Sum
The check sum of ROM (IC206) that the program for the
DVD system processor (IC207) is stored.
(4 digits hexadecimal number)
0-2-4. Model Type
Model name is displayed. (DAV-LF1)
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.
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1. DRIVE AUTO ADJUSTMENT
On the Test Mode Menu screen, press the 1 "R" key on the remote
commander, and the Adjustment Menu will be displayed.
## Drive Auto Adjustment ##
Adjustment Menu
0. ALL
1. DVD-SL
2. CD
3. DVD-DL
Normally, 0 "R" 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 0 "R" key on the remote commander, and the servo set
data in EEPROM will be initialized. Then, 1. DVD-SL disc, 2. CD
disc and 3. 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 O "R" button on the remote com-
mander.
Note: During adjustment of each disc, the measurement for disc type
judgment 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 "R" key 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
Exit: RETURN