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– 41 –

Yes

Yes

Is output (tracking error signal) obtained at the pins 46 (TEI)
and 47 (TEZI) of IC802 the CD TEST MODE "STEP 4" is
changed to "STEP 5"?

Is output (HF signal) obtained at the pin 38 (RFI) of IC802
when the CD TEST MODE "STEP 4" is changed to "STEP 5"?

Is output (HF signal) obtained at the pins 41 (RFZI) and 42
(RFRP) of IC802 when the CD TEST MODE "STEP 4" is
changed to "STEP 5"?

No

No

No sound from both L and R-ch?

Yes

Is +4.5V applied to pin 83 (DVDD) of IC802?

No

Check the PWB pattern between pin 50 (TEO) of IC802 and pin 18
of IC804.
Check the periphery of IC804 and BI801/CNS801.
If OK.  Optical pickup failure.

Check the periphery of IC801.
Check the PWB pattern between pin17 (RFRP) of IC801 and pins
41 (RFZI) and 42 (RFRP) of IC802.
If OK.  IC801 is faulty.

No

Yes

Normal.

Check the interval between the pins 82 or 85 of IC802 and the pins
1 or 3 IC601.

No

Check the PWB pattern between R819 and Q861.

Yes

Is signal of pins 82 and 85 of IC802 output?

No

Check the peripheral parts of IC802. If OK, IC802 is faulty.

Yes

The main PWB is faulty.

Check the periphery of IC801.
Check the PWB pattern between
pin 12.
(TEO) of IC801 and pins 46 and 47
of IC802.
Is it normal ?

Is output obtained at the pins 2 and
5 of BI802/CNS802

Optical pickup failure.

IC801 is faulty.

Check the periphery of IC801.
Check the PWB pattern between pin 19 (RFGO) of IC801 and pins
38 (RFI) of IC802.
If OK.  IC801 is faulty

Is output obtained at the pins 1 and
3, 4 of BI802/CNS802.

Optical pickup failure.

Is the following wave output to the pin 55 (DMO) of IC802
when the CD TEST MODE "STEP 4" or  "STEP 5"?

Check the periphery pins 28~32 of IC802.
If OK.  IC802 failure.

No

No

No

Yes

Yes

No

Yes

Yes

test mode "step 4"

test mode "step 5"

TEI

TEZI

test mode "step 4"

test mode "step 5"

RFI

test mode "step 4"

test mode "step 5"

RFZI

RFRP

test mode "step 4"

test mode "step 5"

DMO

– 42 –

Yes

Yes

Is following sled feed signal output the pin 53 (FMO) of IC802
when FF/REW key is pressed after the CD TEST MODE
"STEP 1" is seted?

Is sled feed signal output the pins 10 and 11 of IC804?

Is sled feed voltage applied between both terminals of sled
motor?

No

Check the peripheral parts of IC804. If OK, IC804 is faulty.

No

C801 is faulty.

Check the BI803/CNS803.

No

Yes

Check the CD mechanism (periphery of sled motor).
If the sled motor does not run when DC2.0V is applied to
both terminals of sled motor, the sled motor is faulty.

Yes

Is following sled signal output the pin 53 (FMO) of IC802
during playback?

Normal.

No

IC802 is faulty.

Does the sled motor run in FF/REW state when the SERVO
TEST MODE "STEP1" is set?

Is the following wave output to the pin 49 (TRO) of IC802
during track search in normal playback?

Is the following wave output to the pins 12 (TEO) of IC801
during track search in normal playback?

Yes

Yes

No

Check as stated in item "SLED MOTOR OPERATION FAILURE".

No

IC802 failure.

No

Check the PWB pattern between pin 49 (TRO) of IC802 and pin
18 of IC804.
Check the PWB pattern between pins 20 and 21 of IC804 and
Optical pickup.
If OK.  Optical pickup failure.

Yes

Is the above wave output to the pins 46 (TEI) and 47 (TEZ) of
IC802 during track serch in normal playback?

No

Check the PWB pattern between pin 12 (TEO) of IC801 and pins 46
and 47 of IC802.  If OK. IC801 failure.

Normal.

Yes

Yes

Is following sled feed signal output the pins 12 and 13 of
IC804 when FF/REW key is pressed after the CD TEST
MODE "STEP 1" is seted?

Check the PWB pattern between pin 53 of IC802 and pins 12 and
13 of IC804.

No

Is the following wave output to the pin 41 (RFZI) and 42
(RFRP) of IC802 during track search in normal playback?

No

Check the PWB pattern between pin 17 (RFO) and 18 (RFIS), 19
(RFRP) of IC801 and pins 41 and 42 of IC802.  If OK. IC801 failure.

Yes

TRO

TEO

TEI

TEZI

FF

REW

FMO

FMO

RFRP

RFZI

FF

REW

SL 

±

– 42 –

Yes

Yes

Is following sled feed signal output the pin 53 (FMO) of IC802
when FF/REW key is pressed after the CD TEST MODE
"STEP 1" is seted?

Is sled feed signal output the pins 10 and 11 of IC804?

Is sled feed voltage applied between both terminals of sled
motor?

No

Check the peripheral parts of IC804. If OK, IC804 is faulty.

No

C801 is faulty.

Check the BI803/CNS803.

No

Yes

Check the CD mechanism (periphery of sled motor).
If the sled motor does not run when DC2.0V is applied to
both terminals of sled motor, the sled motor is faulty.

Yes

Is following sled signal output the pin 53 (FMO) of IC802
during playback?

Normal.

No

IC802 is faulty.

Does the sled motor run in FF/REW state when the SERVO
TEST MODE "STEP1" is set?

Is the following wave output to the pin 49 (TRO) of IC802
during track search in normal playback?

Is the following wave output to the pins 12 (TEO) of IC801
during track search in normal playback?

Yes

Yes

No

Check as stated in item "SLED MOTOR OPERATION FAILURE".

No

IC802 failure.

No

Check the PWB pattern between pin 49 (TRO) of IC802 and pin
18 of IC804.
Check the PWB pattern between pins 20 and 21 of IC804 and
Optical pickup.
If OK.  Optical pickup failure.

Yes

Is the above wave output to the pins 46 (TEI) and 47 (TEZ) of
IC802 during track serch in normal playback?

No

Check the PWB pattern between pin 12 (TEO) of IC801 and pins 46
and 47 of IC802.  If OK. IC801 failure.

Normal.

Yes

Yes

Is following sled feed signal output the pins 12 and 13 of
IC804 when FF/REW key is pressed after the CD TEST
MODE "STEP 1" is seted?

Check the PWB pattern between pin 53 of IC802 and pins 12 and
13 of IC804.

No

Is the following wave output to the pin 41 (RFZI) and 42
(RFRP) of IC802 during track search in normal playback?

No

Check the PWB pattern between pin 17 (RFO) and 18 (RFIS), 19
(RFRP) of IC801 and pins 41 and 42 of IC802.  If OK. IC801 failure.

Yes

TRO

TEO

TEI

TEZI

FF

REW

FMO

FMO

RFRP

RFZI

FF

REW

SL 

±

– 42 –

Yes

Yes

Is following sled feed signal output the pin 53 (FMO) of IC802
when FF/REW key is pressed after the CD TEST MODE
"STEP 1" is seted?

Is sled feed signal output the pins 10 and 11 of IC804?

Is sled feed voltage applied between both terminals of sled
motor?

No

Check the peripheral parts of IC804. If OK, IC804 is faulty.

No

C801 is faulty.

Check the BI803/CNS803.

No

Yes

Check the CD mechanism (periphery of sled motor).
If the sled motor does not run when DC2.0V is applied to
both terminals of sled motor, the sled motor is faulty.

Yes

Is following sled signal output the pin 53 (FMO) of IC802
during playback?

Normal.

No

IC802 is faulty.

Does the sled motor run in FF/REW state when the SERVO
TEST MODE "STEP1" is set?

Is the following wave output to the pin 49 (TRO) of IC802
during track search in normal playback?

Is the following wave output to the pins 12 (TEO) of IC801
during track search in normal playback?

Yes

Yes

No

Check as stated in item "SLED MOTOR OPERATION FAILURE".

No

IC802 failure.

No

Check the PWB pattern between pin 49 (TRO) of IC802 and pin
18 of IC804.
Check the PWB pattern between pins 20 and 21 of IC804 and
Optical pickup.
If OK.  Optical pickup failure.

Yes

Is the above wave output to the pins 46 (TEI) and 47 (TEZ) of
IC802 during track serch in normal playback?

No

Check the PWB pattern between pin 12 (TEO) of IC801 and pins 46
and 47 of IC802.  If OK. IC801 failure.

Normal.

Yes

Yes

Is following sled feed signal output the pins 12 and 13 of
IC804 when FF/REW key is pressed after the CD TEST
MODE "STEP 1" is seted?

Check the PWB pattern between pin 53 of IC802 and pins 12 and
13 of IC804.

No

Is the following wave output to the pin 41 (RFZI) and 42
(RFRP) of IC802 during track search in normal playback?

No

Check the PWB pattern between pin 17 (RFO) and 18 (RFIS), 19
(RFRP) of IC801 and pins 41 and 42 of IC802.  If OK. IC801 failure.

Yes

TRO

TEO

TEI

TEZI

FF

REW

FMO

FMO

RFRP

RFZI

FF

REW

SL 

±