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Model
DVP-NS300
Pages
112
Size
17.28 MB
Type
PDF
Document
Service Manual
Brand
Device
DVD
File
dvp-ns300.pdf
Date

Sony DVP-NS300 Service Manual ▷ View online

6-3
4. Servo
(4-2) Servo DSP Check
Data write 
 read, and accord check
Error 12: Read data discord
0x9249, 0x2942 and 0x4294 are written to the RAM ad-
dress 0x602 of the Servo DSP and then read for checking.
Also, OPT type “1 LASER” or “2 LASER” is displayed.
(4-3) DSP Driver Test
Test signal data 
 DSP Driver
Error: Not detected.
Caution: Do not perform this checking with the mechanical deck
connected.
The maximum voltage is applied to the Servo Driver IC
(IC401). If the mechanical deck is connected, it will be
destroyed immediately. Following the output message,
disconnect the mechanical deck, then enter the specified
4- or 5-digit value from the commander, and press the
[ENTER]
 key. The test is conducted only if the entered
value accords. To exit the test, check the output level,
then press 
[NEXT]
 key.
This check is not conducted, but skipped in “All” menu
item.
Supplement: How to disconnect mechanical deck
Disconnect flexible flat cables connected to the
CN201 and CN202 of MB-98 board. Also, discon-
nect flat cable from the CN402.
5. Supply
(5-2) ARP Register Check
Data write 
 read, and accord check
Error 08: ARP register write, and read data discord
Data 0x00 to 0xFF is written sequentially to the ARP TMAX
register (address 0xC6) and then read for checking.
(5-3) ARP to RAM Data Bus
Data write 
 read, and accord check
Error 09: ARP 
←→
 RAM data bus error
Data 0x0001 to 0x8000 where one bit each is set to 1 are
written to the address 0 of RAM (IC303) connected to the
ARP (IC302) through the bus, then they are read and
checked. In case of discord, written bit pattern and read
data are displayed. If data where multiple bits are 1 are
read, the bits concerned may touch each other. Further, if
data where certain bit is always 1 or 0 regardless of written
data, the line could be disconnected or shorted.
(5-4) ARP to RAM Address Bus
Data write 
 other address read discord check
Error 10: ARP 
←→
 RAM address bus error
Caution: Address and data display in case of an error is
different from the display of other diagnosis (de-
scribed later).
Before starting the test, all addresses of RAM (IC303) are
cleared to 0x0000.
First, 0xA55A is written to the address 0x00000, and the
address data are read and checked from addresses 0x00001
to 0x80000 while shifting 1 bit each. Next, the data at that
address is cleared, and it is written to the address 0x00001,
and read and checked in the same manner. This check is
repeated up to the address 0x80000 while shifting the ad-
dress data by 1 bit each.
If data other than 0 is read at the addresses except written
address, an error is given because all addresses were al-
ready cleared to 0. In this check, the error display pattern is
different from that of other diagnosis; read data, written
address, and read address are displayed in this order. How-
ever, the message uses same template, and accordingly ex-
change Address and Data when reading. The following dis-
play, for example,
### Syscon Diagnosis ###
 5-4. ARP to RAM Address Bus
Error 10: ARP - RAM Address B
Address
: 0000A55A
Write Data : 00000000
Read Data
: 00080000
Press NEXT Key to Continue
Press PREV Key to Repeat
_
shows the data 0xA55A was read from address 0x00080000
though it was written to the address 0x00000000. This im-
plies that these addresses are in the form of shadow. Also,
if the read data is not 0xA55A, another error will be present.
(5-5) ARP RAM Check
Data write 
 read, and accord check
Error 11: ARP RAM read data discord
The program code data stored in ROM are copied to all
areas of RAM (IC303) connected to the ARP (IC302)
through the bus, then they are read and checked if they ac-
cord. If the detail check was selected initially, the data are
written to all areas and read, then the same test is conducted
once again with the data where all bits are inverted between
1 and 0. If discord is detected, faulty address, written data,
and read data are displayed following the error code 11,
and the test is suspended.
6. AV Decoder
(6-2) 1930 RAM
Data write 
 read, and accord check
Error 13: AVD RAM read data discord
The program code data stored in ROM (IC107) are copied
to all areas of RAM (IC504, IC505) connected to the AVD
(IC503) through the bus, then they are read and checked if
they accord. Further, the same test is conducted once again
with the data where all bits are inverted between 1 and 0. If
discord is detected, faulty address, written data, and read
data are displayed following the error code 13, and the test
is suspended.
During the test, OSD display becomes blank as the OSD
area is also checked.
(6-3) 1930 SP
ROM 
 AVD RAM 
 Video OUT
Error: Not detected.
The data including sub picture streams in ROM (IC107)
are transferred to the RAM (IC504, IC505) in AVD (IC503),
and output as video signals from the AVD (IC503).
Though OSD display becomes blank, the output of video
signals continues until the key is pressed.
 They are output from all video terminals (Composite, Y/
C, Component) except EURO AV terminal.
6-4
7. Video
(7-2) Color Bar
AVD color bar command write 
 Video OUT
Error: Not detected.
The command is transferred to the AVD, and the color bar
signals are output from video terminals.
They are output from all video terminals (Composite, Y/C,
Component) except EURO AV terminal.
(7-3) Composite Out (AEP, UK, RUS Model)
EURO-AV Composite video output check
AVD color bar command write 
 Video (EURO-AV Com-
posite) OUT
Error: Not detected.
With the Component of video output turned off, the color
bar signals are output from the EURO-AV terminal.
(7-4) Y/C Out (AEP, UK, RUS Model)
EURO-AV Y/C video output check
AVD color bar command write 
 Video (EURO-AV Y/C)
OUT
Error: Not detected.
With the Y/C of video output turned on, the color bar sig-
nals are output from the EURO-AV terminal.
(7-5) RGB Out (AEP, UK, RUS Model)
EURO-AV RGB video output check
AVD color bar command write 
 Video (EURO-AV RGB)
OUT
Error: Not detected.
With the RGB of video output turned on, the color bar sig-
nals are output from the EURO-AV terminal.
(7-6) Component Out (AEP, UK, RUS Model)
EURO-AV Component video output check
AVD color bar command write 
 Video (EURO-AV Com-
ponent) OUT
Error: Not detected.
With the Component of video output turned on, the color
bar signals are output from the EURO-AV terminal.
8. Audio
(8-2) ARP 
 1930
Error 14 : ARP 
 1930 video NG
15 : ARP 
 1930 audio NG
(8-3) Test Tone
A pink noise signal is output from the AVD (IC503) through
optical coaxial digital terminal and analog audio terminal.
Error: Not detected.
After turning on all outputs, each time the 
[NEXT]
 key is
pressed, the output channel is switched for individual chan-
nel checking.
Left + Right 
 Left 
 Right are checked in this order.
Check Items List
2) Version
(2-2) Revision
(2-3) ROM Check Sum
(2-4) Model Type
(2-5) Region
3) Peripheral
(3-2) Gate Array Check
(3-3) EEPROM Check
4) Servo
(4-2) Servo DSP Check
(4-3) DSP Driver Test
5) Supply
(5-2) ARP Register Check
(5-3) ARP to RAM Data Bus
(5-4) ARP to RAM Address Bus
(5-5) ARP RAM Check
6) AV Decoder
(6-2) 1930 RAM
(6-3) 1930 SP
7)
Video
(7-2) Color Bar
(7-3) Composite Out (AEP, UK, RUS Model)
(7-4) Y/C Out (AEP, UK, RUS Model)
(7-5) RGB Out (AEP, UK, RUS Model)
(7-6) Component Out (AEP, UK, RUS Model)
8) Audio
(8-2) ARP 
 1930
(8-3) Test Tone
Error Codes List
00: Error not detected
01: RAM write/read data discord
02: Gate array NG
03: EEPROM NG
04: Flash memory clear error
05: Flash memory write error
06: Flash memory read data discord
07: 2725 read data discord
08: ARP register read data discord
09: ARP 
←→
 RAM data bus error
10: ARP 
←→
 RAM address bus error
11: ARP RAM read data discord
12: Servo DSP NG
13: 1930 SDRAM NG
14: ARP 
 1930 video NG
15: ARP 
 1930 audio NG
16: 1910 UCODE download NG
17: System call error (function not supported)
18: System call error (parameter error)
19: System call error (illegal ID number)
20: System call error (time out)
21: NAND Flash faulty blocks exceed 10
90: Error occurred
91: User verification NG
92: Diagnosis cancelled
6-5
6-4.
DRIVE  AUTO  ADJUSTMENT
On the Test Mode Menu screen, press 
[1]
 key on the remote com-
mander, and the drive auto adjustment menu will be displayed.
## Drive Auto Adjustment ##
Adjustment Menu
0. ALL
1. DVD-SL
2. CD
3. DVD-DL
4. LCD
Exit: RETURN
Normally, 
[0]
 is selected to adjust DVD (single layer), CD, DVD
(dual layer), and LCD (SACD) 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. Which
disc is currently adjusted is displayed on the fluorescent display
tube.
The disc used for adjustment must be the one specified for adjust-
ment.
0. ALL
You will be asked if EEPROM data are initialized or not, and for
this prompt, select 
[0]
 and press the 
[ENTER]
 key. First , the servo
setting data in EEPROM, Emergency History and Hour Meter are
cleared to  initialize. Then, 1. DVD-SL disc, 2. CD disc, 3. DVD-
DL disc, and 4. LCD disc (SACD disc) are adjusted in this order.
Each time one disc was adjusted, it is ejected, and therefore ex-
change the disc following the message. Though the message to
confirm whether the discs is to be adjusted is not displayed except
for LCD disk (SACD disk), you can exit the adjustment by press-
ing the 
[STOP]
 button. In adjusting each disc, the mirror time is
measured to check the disk type. In the auto adjustment, whether
the disc type is correct is not checked unlike conventional models,
and accordingly, take care not to insert a different type of disc.
1. DVD-SL (single layer)
Select 
[1]
, insert DVD single layer disc, and press 
[ENTER]
 key,
and the adjustment will be made through the following steps, 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. Set Disc Type SL
4. Spdl Start
5. Wait 1 sec
6. LD ON
7. Focus Error Check
8. Focus ON 0
9. Auto Track Offset Adjust L0
10. Trv Level Check
11. Tracking ON
12. Wait 100 msec
13. CLVA ON
14. Wait 500 msec
15. Sled ON
16. Auto Loop Filter Offset Adjust
17. Auto Focus Gain Adjust L0
18. Auto Focus Balance Adjust L0
19. EQ Boost Adjust
20. Auto Loop Filter Offset Adjust
21. RF Level Measure
22. Jitter Disp ON
23. Jitter Memory
24. Jitter Disp OFF
25. Eep Copy Loop Filter Offset
26. All Servo Stop
6-6
2. CD
Select 
[2]
, insert CD disc, and press 
[ENTER]
 key, and the adjust-
ment will be made through the following steps, then adjusted val-
ues will be written to the EEPROM.
CD Adjustment Steps
1. Sled Tilt Reset
2. Disc Check Memory CD
3. Set Disc Type CD
4. Spdl Start
5. Wait 1 sec
6. LD ON
7. Focus Error Check
8. Fcs ON 1
9. Auto Track Offset Adjust L0
10. Trv Level Check
11. Tracking ON
12. Wait 100 msec
13. CLVA ON
14. Wait 500 msec
15. Sled ON
16. Auto Loop Filter Offset Adjust
17. Auto Focus Gain Adjust L0
18. Auto Focus Balance Adjust L0
19. Eq Boost Adjust
20. Auto Loop Filter Offset Adjust
21. Auto Track Gain Adjust
22. RF Level Measure
23. Jitter Disp ON
24. Jitter Memory
25. Jitter Disp OFF
26. All Servo Stop
3. DVD-DL (dual layer)
Select 
[3]
, insert DVD dual layer disc, and press 
[ENTER]
 key,
and the adjustment will be made through the following steps, then
adjusted values will be written to the EEPROM.
DVD Dual Layer Disc Adjustment Steps
1. Sled Tilt Reset
2. Disc Check Memory DL
3. Set Disc Type DL
Layer 1 Adjust
4. Spdl Start (Wait 1 sec)
5. LD ON
6. Fcs ON 1
7. Auto Track Offset Adjust L1
8. Tracking ON
9. Wait 100 msec
10. Clva ON (Wait 500 msec)
11. Sled ON
12. Auto Focus Gain Adjust L1
13. Auto Focus Balance Adjust L1
14. Eq Boost Adjust L1
15. Auto Track Gain Adjust L1
16. Jitter Disp ON
17. Jitter Memory
18. Jitter Disp Off
Layer 0 Adjust
19. Focus Jump (L1 
 L0)
20. Auto Track Offset Adjust L0
21. Tracking ON (Wait 100 msec)
22. Clva ON (Wait 500 msec)
23. Sled ON
24. Auto Focus Gain Adjust L0
25. Auto Focus Balance Adjust L0
26. Eq Boost Adjust L0
27. Auto Track Gain Adjust L0
28. Jitter Disp ON
29. Jitter Memory
30. Jitter Disp OFF
31. All Servo Stop
4. LCD
This model does not adjust it because the adjusted data of CD are
reflected.
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