Version Information; Video Level Adjustment; Troubleshooting - Sony DVP-PQ2 Service Manual

6-7. VERSION INFORMATION

### Version Infomation ###
IF con. Ver.x.xxx(xxxx)
Group
SYScon. Ver.x.xxx(xxxx)
Model
Region
Servo DSP Ver: x.xxx
AVD ucode Ver: xxxxxxxx
OPT TYPE : x LASER
Exit : RETURN
The ROM version, region code, OPT type, etc. are displayed if
[5]
is selected in the Test Mode Menu.
The parenthesized hexadecimal number in the version number field
indicates the checksum value of the ROM.
Note : After down loading ROM data, sometimes it happens that
checksum is not the same as that of ROM data which has
been down loaded. In such a case, go back to the menu
and select "0. Syscon Diagnosis", then select "1. All" in
"2. Version". If the result of this operation does not give
an agreement, it must be either Down Load error or ROM
error.

6-8. VIDEO LEVEL ADJUSTMENT

On the Test Mode Menu screen, selecting
for video level adjustment. During display of color bars, OSD dis-
appears but the menu screen will be restored if pressing any key.
xx
xx
0x
[6]
displays color bars
6-9. TROUBLE SHOOTING
6-9-1. Faults in Test Mode (MB-108 board)
1. The test mode menu is not displayed.
1-1. Board visual check
Check that the ICs of SYSCON (IC104), ROM (IC106 or
IC107), AVD (IC403), ARP & SERVO (IC301) are working
correctly.
Check that outside appearance of the ICs is normal.
Check that IC pins are not short-circuited.
Check that there is no soldering error.
Check that outside appearance of the capacitors and resistors
is normal.
1-2. Power supply voltage check
Check the power voltage of the power connector (CN102).
Check the power voltage of SYSCON (IC104).
Check the power voltage of ROM (IC106 or IC107).
Check the power voltage of AVD (IC403).
Check the power voltage of ARP & SERVO (IC301).
If the power voltage has any abnormality t
Check that the power supply lines are not shorted.
Check that there is no soldering error.
If any abnormality cannot be found still t
Check that each IC is working normally.
1-3. Clock signal check
Measure the clock signal frequency at CPUCK (CL101) of
SYSCON (IC104) with an oscilloscope.
If the 8.25 MHz signal appears. t Check the machine ac-
cording to section 1-3-1
If the 33 MHz signal appears. t Check the machine accord-
ing to section 1-3-2.
If other frequencies are output.
R110 and R113 have defective soldering, X101 crystal os-
cillator is defective.
If the measurement point is fixed to either "H" or "L". t
Observe XFRRST (pin-uh) of SYSCON (IC104) with an
oscilloscope.
If the measurement point is "L", check the following items.
If the IC has defective soldering, if the IC is short-circuited.
If the measurement point is "H",
t Component X101 or SYSCON (IC104) is defective.
6-11