Hitachi CP-A52 A1B-20, Service Manual

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SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Multimedia LCD Projector
January 2009
SM0323
CP-A52
(A1B-20)
ED-A101 EF
(A1B-20)
ED-A111 EF
(A1B-20)
SERVICE MANUAL
Be sure to read this manual before servicing. To assure safety from fi re, electric shock, injury, harmful
radiation and materials, various measures are provided in this Hitachi Multimedia LCD Projector.
Be sure to read cautionary items described in the manual to maintain safety before servicing.
Service Warning
Warning
The technical information and parts shown in this
manual are not to be used for: the development,
design, production, storage or use of nuclear, chemical,
biological or missile weapons or other weapons of
mass destruction; or military purposes; or purposes that
endanger global safety and peace. Moreover, do not
sell, give, or export these items, or grant permission for
use to parties with such objectives. Forward all inquiries
to Hitachi Ltd.
1. Features ------------------------------------------------------ 2
2. Specifi cations ----------------------------------------------- 2
3. Names of each part ---------------------------------------- 3
4. Adjustment --------------------------------------------------- 6
5. Troubleshooting ------------------------------------------ 14
6. Service points --------------------------------------------- 20
7. Wiring diagram -------------------------------------------- 36
8. Disassembly diagram ----------------------------------- 50
9. Replacement parts list ---------------------------------- 66
10. RS-232C communication ------------------------------ 69
11. Block diagram --------------------------------------------- 76
12. Connector connection diagram ----------------------- 77
13. Basic circuit diagram ------------------------------------ 78
Contents
Caution
1. When replac ing the lamp, avoid burns to your fingers . The lamp becomes very hot.
2. Never touch the lamp bulb with a fi nger 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 (circuit) and power unit (ballast) after turn ing on the projector.
4. Do not touch the exhaust fan during operation.
5. The LCD module assembly is easy to damage. If replacing t he LCD PRISM assembly, do
not hold the FPC of the LCD module assembly.
6. Use the cables which are included with the projector or specifi ed.