2
DDX8019/8029/8029Y/8039
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The IC106 in the DIGITAL I/O UNIT (X88-2020-15) is not a replaceable component.
In case of defective of this IC, replace the entire unit (X88-2020-15).
●
The IC5, IC21, and IC60 in the DVD unit (X37-1120-03) are not replaceable components.
In case of defective of any of these ICs, replace the DVD mechanism assembly. (The IC5 has a device key, which shall be
made consistent with the S/No. of the mechanism assembly after replacement. Thus you cannot replace only the board.)
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MICROCOMPUTER’S TERMINAL DESCRIPTION, TEST MODE, ADJUSTMENT are the same as KVT-719DVD.
Please refer to the service manual (KVT-719DVD: B53-0507-00)
.
In assembling the Traverse UD arm, Drive cam assembly,
Drive gear 5 and Drive gear 4C, align register marks on
these components.
GEAR POSITION IN A DVD MECHANISM
Drive gear 5
Drive cam assembly
Do not forcibly press gears to engage their teeth
but freely let the gears fall under their own weight
and engage their teeth.
Traverse UD arm
Drive gear 4C
Inscriptions
(register marks)
on gears
Align 6 marks
as shown in the
figure
