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4. Media guide l assembly (with write protect sensor lamp)
1)
Inspection
ill
Connect power socket to connector J2 of PWB
unit. Turn power on.
@
Before inserting a diskette, check the following
items.
a) Write protect lamp
Make sure that there is a voltage range of DC 1
to 1.7V between B-13 (lower yellow lead of the
13th pin from power socket) and A-13 (black
lead of the 13th pin from power socket), both
belonging to connector J3.
b) Write protect sensor
Make sure that there is a voltage range of DC 0
to O.5V between B-14 (orange lead below the
14th pin from power socket) and A-14 (black
lead of the 14th pin from power socket), both
belonging to connector J3.
@
Put a write protect diskette (with write protect
seal being applied at the write protect notch of
diskette) in place, and shut the front door. Then
check the following item.
• Write protect sensor
Make sure that there is a voltage range of DC
2.5 to 5.25V between 8-14 and A-14 of
connector J3.
2) Replacement
CD
Remove PWB unit (refer to page
6).
@
Open the front door.
@
Detach 4 lead wires of media guide L assembly
from the housing of connector J3.
@
Remove 2 media guide L assembly fixing screws
(3 mm) and take out the assembly.
@
To attach, take the reverse order.
®
Carry out inspection, referring to description at
left.
Note)
1. Attach the media guide L assembly by pushing it
to main frame stopper side and front bezel side.
2. Lamp and sensor cannot be individually replaced,
because they are built in the media guide L
assembly.
Media guide L assembly fixing
screw
Push
Media guide L assembly
Write protect lamp
Front bezel
Main frame stopper
-8-
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