Practice Test 12

QuickScan 8400F Glass Cleaning Guide
The manufacturer strongly recommends that trained service personnel perform any and all repairs dealing with the disassembly and reassembly of any fastened parts.
Before you start:
- Before carrying out any of the procedures described in this document, make sure that the scanner has been turned off and the power cord has been disconnected.
- To prevent any chance of electric shock, the scanner housing should only be opened by a qualified electronics technician
Removing the Scanner Lid and Scanner Glass Bed:
1. Open the scanner lid to a 90-degree angle
2. Lift the lid upward to remove it.
3. Using the head screwdriver or pen, push slightly downward on the scanner’s glass bed lock to release the scanner’s glass bed.
4. Once the glass bed is released, grab it with both hands and pull away from the scanner. Place the scanner’s glass bed on a flat surface with a cloth or towel underneath to prevent scratching on the glass while cleaning the glass.
 
Cleaning tips:

The best way to clean the scanner glass bed is with a clear glass cleaner solution. Make sure you do not use any color dye solutions. Also, use a soft cloth and avoid all abrasive material such as sponges and rough paper towels. Spray or moisten the calibration cloth. Do not spay directly on the scanner’s upper housing glass, as there is a calibration strip on the underside of the glass bed.

Reassembling the Scanner:

1. Identify the special male and female set and lock clips.
2. Now identify the female receptacles for those clips and align the scanner’s glass bed perfectly over the clips.
3. Slide he scanner’s glass forward or towards the front of the scanner to lock in the scanner’s glass bed.
4. Replace the lid by aligning the lid at a 90-degree angle to insert it.