IM-DR580H
– 53 –
• Recording/playback operation
Yes
No
Does level of pin 3 of IC401 change depending on record and
playback ?
Is RF pattern output from IC201 pins 36 and 37 ?
Yes
No
Check for soldering failure of IC201 .
No
Check for soldering failure of IC401 .
Yes
No
No
Check the periphery of IC501 and the waveform of the pins
97 and 100 to 102 of IC201.
No
If IC701 is not fixed after resoldered, replace it.
No
Check whether the audio signal line between IC701 and J702 is
defective.
Yes
Does input waveform appear on pins 2 and 11 of IC701?
(Mic recording)
Yes
Does the RF waveform appear at TP201A when recording/
Playback is performed ?
Check whether the pin 16 of IC501 and the pin 80 of IC201 are in
H state.
Yes
Yes
Does a digital waveform appear in pins 9 to 12 of IC501 ?
Insert a low reflection disc, and ascertain audio output by normal playback, and then set TEST REC mode.
Change MSL from 00
H
to 80
H
by the control setting of EEPROM. After completing the operation, return in to 00
H
.
Does the head move down, failing to start record even when
the continuous record mode is set after address ?
Check whether there is any damage in IC101, periphery of
laser diode.
Check for defects of IC351, IC353, IC354 and D351 in head
drive, flexible PWB.
Enter the normal recording mode.
Is audio waveform observed on the pins 13 and 16 of IC701 ?
Check voltage of pins 60 and 61 of IC201, pins 17, 18, 20, and 21
of IC601, pins 8 and 9 of CN601.
Check whether disc is record-inhibited.
Содержание IM-DR580H(BK)
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