Denon DCD-1500 - Page 25

7
DEFECTIVE
INITIAL
OPERATION
AT
THE
TIME
OF
DISC
SETTING:
(1/2)
9 blinking continues
©
Are Pins) .@) ot
Pin QJ of 1C208 touches
- TP204 “H” state ? ves ‘
ground.
Is pick-up
moves inner
circle?
4s pulsive signat
appears on CLK,
XLT, DATA?
Are data
come IC 102
€X201087
NO
Defective Defective stide
inner
circle
motor,
«
5
limit
switch
Detective
TR103,
Defective
micro-
of
pick-up
104,
1€102,
etc.
cornputer
(C201.
Detective patrern
or wire between
16201 and 1C 302.
Oefective micro-
computer 1C201,
meee ns,
ts pick-up
comes in to
lead-in?
's dise
has no big
scratch?
NO
© tanec circte timit switch keeps ON.
* Detective slide motor system,
Replace disc.
NO lintecferes} |
ts there
no AM
interference?
ts sub-code
signal normal?
Place a shield
sheet underneath
the mechanism
unit,
© Defective 1C301,
© Broken pattern,
\s HF disturbed? ,
SCOR
ti o suso
stn ted Suv-code signal CRCF
WFCK
Improper setting of
focus offset.
Deteriorated pick-up.