Sony PVM-A250 - Check Method and Remedy

3-4 (E)
PVM-A250
3-1-5. Check Method and Remedy
Check item Reference
device
Address Read data in a
normal state
Check method Remedy
Panel
temperature
lm75_qbc 0h
Bit15-8
Value lower than
41h
Read data is higher
than 41h.
Any communication is
impossible.
When any communication is impossible
8 Replace the OLED module assem-
bly. (Refer to Section 1-4-9.)
Does a fan operate when LED blinks in
orange?
8 Yes: Replace the OLED module
assembly. (Refer to Section
1-4-9.)
No: Replace the corresponding
fan. (Refer to Section 1-4-2 or
1-4-4.)
n
This failure does not appear as symp-
toms when a fixed time does not pass. In
this case, the LED display below
appears.
Power ON → LED blinking in orange
(every other second) → LED blinking in
red
Panel power fpga_cre4 3C47h 0: Normal panel
power
1: Panel power error Does each power output for the OLED
panel on a QBC board exist? (Refer to
Section 3-2.)
8 Yes: Refer to “Does the fuse for the
OLED panel on a QBC board
blow?” described below.
No: Replace the corresponding IC.
Does the fuse for the OLED panel on a
QBC board blow?
8 Yes: Replace the corresponding
fuse. Even if you replace the
fuse, replace the OLED
module assembly when
symptoms are not improved.
(Refer to Section 1-4-9.)
No: Replace the OLED module
assembly. (Refer to Section
1-4-9.)
Panel
correction
fpga_cre4 002bh
bit7, 6
bit7: 1
(FLC1L_DONE)
bit6: 1
(FLC2L_DONE)
bit7: 0
bit6: 0
Turn off and on the power of this unit
and confirm that this unit starts normally.
8 LED blinks in red.
Flash ROM IC on a QBC board is
defective.
Replace the OLED module assem-
bly. (Refer to Section 1-4-9.)
Out-of-DC
IN range
. Confirm whether the supplied DC
voltage is the prescribed voltage (12 V
to 16 V).
. Replace the G2 board. (Refer to
Section 1-4-3.)