7
n Troubleshooting
+5V, +12V of CN700 is normally inputted after
connection of power cable?
X201, X301, X401 oscillate?
Check power short and power supply cable
connection state
After checking IC201 75pin, IC301 11pin,
IC401 88pin for power input, if normal, replace
X201, X301, X401.
IC308 2pin changes from 0V to 5V?
IC302 6pin changes from 0V to 5V?
IC308 3pin : 0V→5V check
Y
Y
N
N
N
N
N
Y
N
N
N
N
N
N
Disc insert
Replace IC308
Check R314, R330, R305 soldering
Check power input of corresponding
IC and replace it
N
Tray in/out? Refer to ‘Tray open/close’
Y
Y
Y
Laser diode on? Refer to ‘No laser diode on’
Y
Focus up/down? Refer to ‘No focus lock’
Y
Focus lock?
Y
Disc rotates? Refer to ‘No disc rotation’
Y
Pause state
v Pause state : LED off as disc rotation state and continue 1 track jump
Y
Spindle lock?
Y
Pick up moves in at power on after moving
out?
Refer to ‘No sled operation’
IC302 3pin changes
from 5V to 0V when
power supplied?
Y
Check and
replace IC302
power
Y
Y
N
Is 3.3V supplied at IC202 4PIN?
IC202 surround circuits
R515, R514 check.
Is 3.3V sanctioned at IC201
DSPVCC terminal?
0V→5V changes at checking IC302 6pin
waveform while opening IC301 64pin and
IC401 9pin in turn
13
Equipments required at repair
1. Oscilloscope(100MHz and more) 2. PROBE for Oscilloscope(10:1)
3. PC(486 and more)
Verify the circuit of power unit and the first status(Plug-in the power cable without I/F cable and verify.)
TE signal at 1 track jump
N
8
No tray open/close
FPC is normally inserted in CN502? Retest after inserting FPC in CN502 properly
Start
N
Check SW301 pattern and soldering
v FPC : Flexible Printed Circuit
Replace SW301
After FPC short check, no error, check SW soldering of deck
FPC of CN502 is normally inserted?
Retest after inserting FPC in CN502 normally
After FPC short check, no error, check SW soldering of deck
FPC of CN502 is normally inserted?
Retest after inserting FPC in CN502 normally
N
N
N
IC301 49pin is 0V at pressing SW301?
Y
IC301 35pin is 0V with tray in?
CN502 16pin
becomes 0V?
CN502 14pin
becomes 0V?
Check R528,R511,R512 soldering
N
N
N
N
IC301 36pin is 0V with tray open?
Check R528,R511,R512 soldering.
Replace IC501Replace IC501
Y
Y
Y
Y
IC501 11pin change from 2.1V to +2V at pressing SW301?
N
N N
N
N
IC501 12pin changes from 2.1V to 2.5V at pressing SW301?
IC501 13pin changes from +6V to +4V, and 14pin
from +6V to +8V, at pressing SW301?
IC501 13pin and 14pin chage each from
6V, 6V, to 8V, 4V at pressing SW301?
Output Voltage of IC501 13Pin is impressed into
SLED
Motor
(-) and IC501 14Pin(+)?
Check pattern and soldering
between CN501 and IC301
Replace loading Motor.
Y
Y Y
YY
Y
14
OPEN tary repair
CLOSE operation repair
9
No laser on
Refer to ‘No tray open/close’
IC101 10pin changes from 0V to +3.3V? Refer to ‘Check power source and initial state’
N
N
IC101 9pin changes from 4.2V to 3.8V?
Check IC101 power input and replace.
Y
Open and close tray(Disc insettion)
Y
CN501 3pin changes from 2V to 2.5V?
Check D101, L101, Q102, R102, C103 soldering
Y
CN501 2pin changes from 0V to 0.7V? Check Pick-up FPC connection state
N
N
N
Y
Replace pick-up
Y
15
10
No SLED operation
Move pick-up out.
Insert 2 FPC and power cord.
SLED runs normally.
Y
Pick-up moves in?
The below waveform is outputted in
IC201 47Pin?
N
Refer to 'Check power source and initial state'
N
Voltage of IC501 21pin in 12V?
Check R511, R512
soldering.
After checking IC501
soldering, no error, replace IC
N
Y
N
N
16
The below signal is inputted
in SLED MOTOR - terminal?
Y
The below signal is inputted
in SLED Motor + terminal?
Y
Replace SLED Motor.
Y
No focus lock
Laser diode is on?
VNOTE : NEVER CHECK 'LASER DIODE
ON' STATE DIRECTLY WITH YOUR EYES
AND RECOGNIZE IT BY SIGNAL
INDICATED IN 'NO LASER DIODE ON' OF
THIS MANUAL.
Y
Insert disc
N
Refer to 'No laser diode on'
Focus up/down?
Y
The below waveform is outputted in IC201
42Pin?
Y
NN
Refer to 'Check power source
and initial state'
FE signals is outputted in IC101 16Pin?
Y
The below waveform is outputted in IC101
Check IC201 power input and soldering.
15Pin?
Y
N
N
Check IC101 power input, soldering and
R116 soldering.
Check IC101 power input and soldering.
Replace IC101
Y
The below waveform is inputted in CN501
The below waveform is inputted in CN501
17Pin?
Y
Y
14Pin?
Y
N
N
Check IC501 power input, soldering and
R506, R507, R505, R201, C216 soldering.
Y
X201 oscillates?
Y
Check power source and initial state.
Y
N
Pick-up connecting FPC is connected?
Y
Replace Pick-up.
17 18
Replace FPC.
11
No spindle motor rotation
Focus lock? Refer to 'No focus lock'
N
N
N
N
N
N
The side waveform is inputted in
IC502 2Pin?
Check IC201 power input and 49Pin soldering.
Check R207, C221 soldering and pattern
Replace IC201
Check R518 soldering
The below waveform is
inputted in IC502 21Pin?
CN502 8Pin is 3V?
Insert disc.
Y
Y
Y
Y
Y
Y
Y
Spindle motor kick signal
Check R519 soldering
CN502 1Pin is 2V?
Replace spindle Motor
Spindle Motor FPC is connected?
Replace IC502
Y
19
1220
No audio output
Focus lock? Refer to 'No focus lock'
N
Insert audio disc.
Y
Y
Spindle Motor rotates? Refer to 'No Spindle Motor rotation'
N
Y
IC301 50Pin is 0V at pressing SW302?
Solder SW302
N
Y
Audio signal is outputted in
IC201 77, 80Pin?
Check IC201 power and soldering.
N
Replace IC201
N
Y
Audio signal is outputted in
IC701 1, 7Pin?
Check IC701 power input and
peripheral integer VR soldering.
N
Replace IC701
N
Y
Audio signal is outputted in JK 701 Check L702, L701 soldering
N
21
When installing is impossible
Does INSTALL message appear? Normal
N
Connect power and I/F cable between
PC and CD-ROM
Y
Do the digital signal of IC301 and IC306
communication pattern change from 0V to
5V?
Check the soldering of IC402, IC301
and pattern open/short
N
N
Y
Do the digital signals of IC301 and IC401
communication pattern change from 0V to
5V?
Check the soldering of IC401, IC301
and pattern open/short
N
Y
Y
Is there soldering between the pattern of
IC401 and CN701
Check the soldering of Damping
Resister and IC, I/F Wafer
N
Resoldering
Y
Is IC301 64PIN 5V when main power
turns on?
Check main power-end and initial state
N
Does X301 oscillate?
Check soldering of C303, C304
Y
Y
Is IC201 95PIN 5V?
N
Y
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