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a,
¢ Procedures to display the error code
(1) Procedure to display the error code before disassembly (finished unit)
Press the
key to start the play operation.
After the time display appears, press the
key to display the error code. (e.g. E-0)
(See Error Code Based Troubleshooting.)
OaARwN
(2) Procedure to display the error code when disassembled
Prepare the unit as described in "How to Check the Main and Servo P.C.B." on pages 16, 17.
Press the
key while holding down the [STOP (MD,
and
keys simultaneously.
When the FL display illuminates, release the [STOP (|,
and
keys.
Load the test disc (SZZP1054C) on the turntable and secure it with the clamper ass'y.
Perform steps 4 and 5 in section (1) above.
aAPons
° Error code based troubleshooting
% The unit is satisfactory if the error code is E-0 of E-2.
% Before testing, check that the test disc is free of scratches and dirt and optical pickup is clean.
Normal the values of
FL error
Signal to check
voltage and waveform
code
Symptom
Probable cause
Signal
;
MDATA | 10102 ® pin
MCLK
1102 © pin
MLD
1C102 © pin
SENSE | 10102 @ pin
RST
1102 @ pin
x1
F
2 c z =
Focus and
tracking offset
adjustments did
not complete in
the specified
time period.
4,
PLAY
0
:
mike
Ae
F *16.9344 MHz
F 216.9344
MHz
F
© 16.9344MH2
F*16.9344MHz
T
© Clocks X1 and X2, power supply VDD, and
reset/RST, all on 1C702
@ MDATA, MCLK, MLD, and SENSE signals
to/from the mechanism controller
Y
STOP
x
T#13.6ms.
Vv
Vv
d
>
©
<
1C102 @ pin
PLAY
2ms.0.tV/DIV.
PLAY
E
|
10102
@ pin
depen"
2ms.0.1V/DIV.
(C102 @ pin
KICK | 16102 @ pin
TFLOCK | 16102 O pin
/RF DET | 16102 © pin
RF
TJ101
UE
3.4V
0.5
@® Scratches or contaminants on disc
surface
Disc play
@® Focus and tracking servo circuits (check
1C102 @ pin
24V
unstable
waveforms, voltages, and part constants.)
® Spindle driver circuit
@® Optical pickup
us 0.1 V/DIV.
| SL-PD647
'
Normal the values of
FL error
Signal to check
voltage and waveform
code
Symptom
Probable cause
eiaaal
display
:
Location
PLAY
STOP
Focus gain
@® Scratches or contaminants on disc surface
:
fre
:
;
F
10102 6
pin
Hab
baa
2.4V
aa
are
@® Focus servo circuit (check waveforms,
f
fete :
the specified
voltages, and part constants.)
1C102 @ pin
© Duties! pickup
ITLOCK | 1C102 @ pin
time period.
PLAY
® Tracking circuit (check waveforms,
voltages, and part constants.)
® Optical pickup
2ms.O,1V/01V,
(C102 @ pin
(C102 © pin
PLAY
1C102 @ pin|
ANA?
2ms6.0.1V/DIV,
PLAY
TE
10102 @ pin
a
1C102 @ pin
ITLOCK | 1C102 @ pin
E
Tracking
gain
;
.
suicctaent ef d
@ Scratches or contaminants on disc surface
1C102 ® pin
fabek| 93"
not complete in
the specified
time period.
Perform the same check as for error codes <E4, E6> and
<E8, A>.
@ NEW DIGITAL SERVO CIRCUIT
Notes:
1. There are two types A and B of new digital servo circuit.
2. Refer to "How to distinguish between A and B" shown below.
3. There are two types (MN66271 and MN662712RA) for IC102.
When changing IC102, use MN662712RA.
¢ How to distinguish between types A and B.
VR101
Not mounted
R114
ERJ6GEYJ104V
R134—136
ERJ6GEYJ331V
CHIP JUMPERS
RJ101
ERJ6GEYOROOV
Not mounted
ECBT1H331KB5
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