Pioneer CDJ-800MK2 Service Manual page 100

1
Player (3/4)
Sites Waveforms
The error rate measured in Test Operation mode of Service mode is high.
A
Pickup Assy
Player
B
Player
Pickup Assy
Pickup Assy
Player MAIN Assy
, , ,
1 2 8 11
The LD is not turned on after entering Test Operation mode of Service mode.
RLYB Assy
C
MAIN Assy
Player
MAIN Assy
MAIN Assy
D
The pickup lens does not move up or down after entering Test Operation mode of Service mode.
Player
Pickup Assy
MAIN Assy
MAIN Assy MAIN Assy
E
9
F
100
1
2
Points to be checked
z To which the cause is attributed, disc or
player, must be judged first.
Visually check the disc for stains on the
recording surface.
x Using the disc that produced a high error rate,
measure an error rate at addresses in a different
area.
c Check if shavings or dirt are attached to the
pickup lens.
v Check if the TM Assy (servo mechanism) is
securely attached.
b Check if the loading mechanism SV Assy is
securely attached.
n Check if any foreign object is on the spindle
table.
m Check if any foreign object is attached to the
magnet section of the Pickup Assy.
, Check the S-curve, TE, RFO, and AGCRF
levels in Service mode.
z Visually check if the LD short-circuit switch
(S1101) remains closed.
x Check that Pins 41 and 42 on the Servo DSP
(IC101) are open or short-circuited.
c Check if the FFC cable that connects the
Pickup and the RLYB Assys is securely
connected to the Pickup Assy, if the conductor
side is defective, and if there is any cable
breakage. Also check for loose connection of
connectors.
v Check if the R101 to R105 or Q105 are
missing.
b Check if the FFC cable that connects the
RLYB and MAIN Assys is firmly connected to
CN101.
z Check if the FFC cable that connects the TM
and the RLYB Assy is securely connected to the
Pickup Assy, if the conductor side is defective, or
if there is any cable breakage. Also check for
loose connection of connectors.
x Check if the resistance of the focus coil is too
large or if the focus coil is broken, using Service
mode.
c Check if the 7 V power is supplied to Pin 32 of
IC102.
v Check if the signal output from the FOO
terminal on the MAIN Assy oscillates centered
around 1.65 V.
2
3
Causes & Measures to be taken
If the disc is clearly stained, replace it with a
clean CD.
If the error rate at addresses in a different area is
not high, the CD is defective. Replace it with a
high-quality CD.
If the error rates at addresses in different areas
on the whole disc are high, proceed to Step 3.
Clean the lens.
Remove the foreign object.
Remove the foreign object.
See "Failure judgment of the Pickup Assy" for
details.
Set the LD short-circuit switch to OPEN.
If the symptom is ameliorated by replacement of
the FFC cable, the defective cable is the cause.
If the symptom is ameliorated by replacement of
the FFC cable, the defective cable is the cause.
See "Failure judgment of the Pickup Assy" for
details.
CDJ-800MK2
3
4
Remarks
LD short-circuit switch
4