Ricoh PJ WX5350, Field Service Manual

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Important Safety Notices
• RISK OF ELECTRIC SHOCK DO NOT OPEN
• TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER. NO USER-
SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
This symbol warns the user that uninsulated voltage within the unit may have sufficient
magnitude to cause electric shock. Therefore, it is dangerous to make any kind of
contact with any part inside of this unit.
This symbol alerts the user that important literature concerning the operation and
maintenance of this unit has been included.
Therefore, it should be read carefully in order to avoid any problems.
• HEATSINK MAY BE ENERGIZED. TEST BEFORE TOUCHING.
• Heat sink located on the power board, is electrified. mark is putted on the primary heat sink.
Pay attention to this area.
During servicing carefully observe the following.
1. OBSERVE ALL PRECAUTIONS
Items and locations that require special care during servicing, such as the cabinet, chassis, and
parts are labelled with individual safety instructions. Carefully comply with these instructions and all
precautions in the instruction manual.
2. BE CAREFUL OF ELECTRIC SHOCK
The chassis carries an AC voltage. If you touch the chassis while it is still alive, you will get a severe
shock. If you think the chassis is alive, use an isolating transformer or gloves, or pull out the plug
before replacing any parts.
3. USE SPECIFIED PARTS
The components have been chosen for minimum flammability and for specific levels of resistance
value and withstand voltage. Replacement parts must match these original specifications. Parts
whose specifications are particularly vital to safe use and maintenance of the set is marked on
the circuit diagrams and parts list.
Substitution of these parts can be dangerous for you and the customer, so use only specified parts.
4. REMOUNT ALL PARTS AND RECONNECT ALL WIRES AS ORIGINALLY INSTALLED
For safety, insulating tape and tubes are used throughout, but some lift-off parts on the printed
wiring board require special attention.
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