PD-D6-J
64
1
2
3
4
1
2
3
4
C
D
F
A
B
E
7.1.3 TROUBLE SHOOTING
Start
(Power
→
ON)
Does
the LCD light?
Cancel the pure audio
or dimmer function.
Refer to Addendum No. 1.
Check the connections at
D1801, D1802, and CN1801.
• Check that the voltage at V2201
1
is 4.4 V and that that at V2201
2
is 5 V.
• Are any data transmitted on the
LCD communication line (LCCDT,
LCDCK, LCDCS, LCDRS) when
the voltage is switched between 0
and 5 V?
• Are H and L switched when BLOFF
or DIMMER functions?
• Check the FU1.
• Check the connection between the PRIMARY
and AJKB (4 pin) Assys.
• Check the connection between the AJKB and
LCD Assys (17-pin FFC).
• Check that the voltage at J11
3
is 5.6 V.
• Check the connections at D1851 and CN1801.
• Check the connection between the AJKB
and CONNECTOR Assys (15-pin FFC).
• Check the connection between the
CONNECTOR and DVDM Assys (29-pin FFC).
• Is D1809 short-circuited?
• Are the pins bridged at
IC1301 or IC1401?
Check
that the voltage
at C1805(+) is
+12 V.
Yes
Yes
No
[V+5A]
No
No
Does
the pure audio
or dimmer function
operate?
Are the
indications on
the LCD correct?
Yes
No
Does the tray
open?
Refer to Addendum No. 2.
Yes
No
Does
the focus function
operate?
Refer to Addendum No. 3.
Yes
No
Does
the spindle
rotate?
Refer to Addendum No. 4.
Yes
No
Can any
operation be
stopped?
Yes
No
• Check the connection between the AJKB and CONNECTOR Assys (15-pin FFC).
• Check the connection between the CONNECTOR and DVDM Assys (29-pin FFC).
• Check the voltages at V+12A, V+5A, V+9D, and V+6R5V.
Yes
Yes
Yes
No
No
Replace D1805 and Q1801,
in that order.
Replace D1807 and Q1803,
in that order.
Yes
Check if the pins are short-circuited
at IC1101, IC1201, or IC1102.
No
Check
that the voltage
at V+3D is
+3.3 V.
Are the pins bridged at IC1301
or IC1401 or IC1501?
No
Is IC1851
damaged?
Yes
Replace IC1851.
No
The LCD
display goes dark,
and the pure audio
LED starts flashing.
[V+12V system]
Check that the voltage
at C1803(+) is
+17 V.
Yes
No
[V+9D system]
Check that the voltage
at C1852(+) is
+8.3 V.
• Check the connections at D1852 and CN1801.
• Check the connection between the AJKB
and CONNECTOR Assys (15-pin FFC).
• Check the connection between the
CONNECTOR and DVDM Assys (29-pin FFC).
Check
that the voltage
at V+6R5V is
+6.5 V.
Are the pins bridged at IC101?
No
Is IC1852
damaged?
Yes
Replace IC1852.
No
Yes
No
[V+6R5V system]
Check that the voltage
at C1854(+) is
+11 V.
A