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Overview of service diagnostics.
Start with test disc 5 or audio signals disc loaded.
STEP 0
STEP 4
STEP 2
STEP 3
STEP 4
STEP 5
STEP 6
STEP 7
STEP 8
STEP 9
STEP 10
POWER ON TOGETHER WITH
PLAY AND PAUSE BUTTON
er
TESTING OF COMMUNICATION
BETWEEN SERVO- AND USERPROCESSOR
PUSH "NEXT"
VISUAL CHECK OF RADIAL ARM
PUSH "NEXT"
i
TESTING OF FOCUS CIRCUIT
AND LASER
PUSH "NEXT"
VISUAL CHECK OF MOTOR AND
MOTORCONTROL CIRCUIT
PUSH "NEXT"
Speers! comets ile
TESTING OF THE RADIAL LOOP
PUSH "NEXT"
TESTING OF PLAYER IN
NORMAL AUDIO MODE
ened
PUSH "OPEN" A
PUSH "NEXT"
TESTING OF REGISTERS OF EVC
—-
PUSH "NEXT"
TESTING OF BLOCK DECODER (CDBD)
——_____—_!
PUSH "NEXT*
—tes
TESTING OF CDBD AND EVC
PUSH "NEXT"
MEASURING THE DATAPATH
FROM COBD TO EVC
PUSH "NEXT"
LOADING OF AN IMAGE
PUSH "POWER OFF" TO LEAVE THE
SERVICE DIAGNOSTICS MODE
:
PHOTO CD PLAYER IN SERVICE MODE
ND INSERT PHOTO CD DISC
DISPLAY INFORMATION :
————
SO 12:21
SO ER:XX
$1 0:00
|
$2 FOC
$2 0:16
$3 0:00
$4 0:00
S4 ER:XX
| eae aie
ea
ane
|
NORMAL AUDIO
|
DISPLAY
rn
a
$6 0:00
S6 ER:XX
$7 0:01
$7 0:02
$7 ER:XX
$8 0:00
S8 ER:XX
$9 0:00
|
NORMAL PHOTO CD
DISPLAY
DRC
27972
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