18
PD-D9MK2-K
1
2
3
4
A
B
C
D
E
F
1
2
3
4
5. DIAGNOSIS
5.1 TROUBLESHOOTING
Start
(Power
→
ON)
Lighting LCD
come out of the pure audio
mode or dimmer mode
Refer to Addendum No. 1.
Appearance some waveform on
LCD communication line
(LCCDT,LCDCK,LCDCS,LCDRS)
Confirm the port logic of BLOFF
and DIMMER when operate
Confirmation HB at CN1801or change
D1801,D1802,D1803D1804
<confirmation>
FU1
Connection between J1702 and CN13
Power line CN11
3
: 5.6V,CN11
5
: 5.8V
<confirmation>
D1809 is shorten
HB at CN1802 and J1901
CN1802
3
is +13V
Yes
Yes
No
No
No
<confirmation>
input and output of F2201,Q2103 is 5V
Yes
No
No
LCD
displays
correctly
V2201
1
is 4.4V and
V2201
2
is
5V
Yes
No
Tray movement
(open/close)
Refer to Addendum No. 2.
No
Focus
movement
Refer to Addendum No. 4.
Yes
No
Can stop
spicdle movement
(stop key react)
Yes
No
<confirmation>
Connection between CN1802 and J1901
Connection between CN1501 and CN2702
Connection between CN2701 and CN901
Connection between CN1702 and CN2704
Yes
Yes
Yes
No
No
Change parts D1805,Q1801,
Q1802 in turn
Change parts D1807,Q1803,
in turn
No
<confirmation>
HB at IC1101,IC1201
No
(V+3D line)
CN1802
3
is 3.3V
<confirmation>
HB at J1901,CN1802,
IC1151,IC1152,IC1251,IC1252,
IC1401-IC1406
No
Yes
<confirmation>
HB at CN1701
Change IC1701
No
LCD
disappers and
flashing pure
audio LED
(V+12V line)
Cathode of 1801,
D1802 is
+17V
(V+5V line)
CN1802
1
is +5V
Yes
No
(V+9D line)
D1701
1
is +7.5V
Is status of
IC1701 OK?
Yes
<confirmation>
HB at CN1701
Change IC1702
No
No
Is status of
IC1702 OK?
CN1702
3
is +6.5V
<confirmation>
HB at CN1702,CN2704,IC101
No
Yes
(V+6R5V line)
D1702
1
is +8.5V
A
Working
at pure audio
mode or
dimmer?
www. xiaoyu163. com
QQ 376315150
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TEL 13942296513 QQ 376315150 892498299
