SERVICE MANUAL
P4X/P4XM
chassis
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Multimedia LCD Projector
April 2001
Digital Media Systems Division
CP-X980W
CP-X985W
Contents
Caution
Be sure to read this manual before servicing. To assure safety from fire, electric shock, injury, harmful
radiation and materials, various measures are provided in this Hitachi Multimedia LDC Projector. Be sure to
read cautionary items described in the manual to maintain safety before servicing.
Service Warning
1. When replace the lamp, to avoid burns to your fingers. The lamp becomes too hot.
2. Never touch the lamp bulb with a finger or anything else. Never drop it or give it a shock. They may cause
bursting of the bulb.
3. This projector is provided with a high voltage circuit for the lamp. Do not touch the electric parts of power
unit (main), when turn on the projector.
4. Do not touch the exhaust fan, during operation.
5. The LCD module assembly is likely to be damaged. If replacing to the LCD module assembly, do not hold
the FPC of the LCD module assembly.
1. Features -------------------------------------------------- 2
2. Specifications -------------------------------------------- 2
3. Names of each part ------------------------------------ 3
4. Adjustment ----------------------------------------------- 7
5. Troubleshooting ---------------------------------------- 14
6. Service points ------------------------------------------ 20
7. Block diagram ------------------------------------------ 23
8. Wiring diagram ----------------------------------------- 24
9. Basic circuit diagram ---------------------------------- 28
10.Connector connection diagram --------------------- 77
11.Disassembly diagram --------------------------------- 79
12.Replacement parts list -------------------------------- 81
13.RS-232C communication ---------------------------- 82
