Diagnosis; Troubleshooting - Pioneer PD-D6MK2-K Service Manual

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5. DIAGNOSIS

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5.1 TROUBLESHOOTING

A
Start
(Power → ON)
Does No
the LCD light?
Yes
B
Are the
No
indications on
the LCD correct?
Yes
C
No
Does the tray
open?
Yes
TE
L 13942296513
Does
No
the focus function
operate?
Yes
D
Does
No
the spindle
rotate?
Yes
Can any
No
operation be
stopped?
Yes
E
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F
A
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Does
No
the pure audio
or dimmer function and the pure audio
operate? LED starts flashing.
Yes
Cancel the pure audio
• Check the connection between the AJKB and CONNECTOR Assys (15-pin FFC).
or dimmer function.
• 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.
• 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?
Refer to Addendum No. 1.
Refer to Addendum No. 2.
Refer to Addendum No. 3.
Refer to Addendum No. 4.
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PD-D6MK2-K
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• Check the FU1.
The LCD
• Check the connection between the PRIMARY
No
display goes dark,
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.
Yes
[V+12V system]
Check that the voltage
at C1803(+) is
+17 V.
Yes
Check
that the voltage
at C1805(+) is
+12 V.
Yes
Replace D1807 and Q1803,
in that order.
Yes
Q Q
3 6 7
Check if the pins are short-circuited
at IC1101, IC1201, or IC1102.
[V+9D system]
Check that the voltage
at C1852(+) is
+8.3 V.
Yes
• Check the connections at D1851 and CN1801.
• Check the connection between the AJKB
• Check the connection between the
Check
that the voltage
at V+3D is
+3.3 V.
[V+6R5V system]
Check that the voltage
at C1854(+) is
+11 V.
Yes
• Check the connections at D1852 and CN1801.
• Check the connection between the AJKB
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• Check the connection between the
Check
that the voltage
at V+6R5V is
+6.5 V.
3
4
2 9 9 4
No
Check the connections at
D1801, D1802, and CN1801.
• Is D1809 short-circuited?
No
[V+5A]
• Are the pins bridged at
IC1301 or IC1401?
No
Replace D1805 and Q1801,
in that order.
1 3 1 5 0 5 8 2 9
No No
Is IC1851
damaged?
Yes
Replace IC1851.
and CONNECTOR Assys (15-pin FFC).
CONNECTOR and DVDM Assys (29-pin FFC).
No
Are the pins bridged at IC1301
or IC1401 or IC1501?
No No
Is IC1852
damaged?
Yes
Replace IC1852.
m
and CONNECTOR Assys (15-pin FFC).
co
CONNECTOR and DVDM Assys (29-pin FFC).
.
No
Are the pins bridged at IC101?
4
2 8
9 9
9 4 2 8 9 9