Hitachi L37X01A, Service Manual

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SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
LCD TV
September 2007
YK
No.055E
L37X01A
L42X01A
SERVICE MANUAL
Be sure to read this manual before servicing. To ensure safety from fi re, electric shock, injury, harmful
radiation and materials, various measures are provided in this LCD TV.
Be sure to read cautionary items described in the manual before servicing.
These servicing instructions are for use by quali
fi ed service personnel only. To reduce the risk of electric
shock, do not perform any servicing other than that described in the operating instructions unless you
are quali
fi ed to do so.
Caution
1. Since the Panel Module and the front Filter are made of glass, handling the broken Module and Filter
carefully and with caution in order not to receive injury.
2. Replacement work should be started after the Panel Module and the AC/DC Power supply have
become suf fi ciently cool.
3. Special care should be taken when working near the display area in order not to damage its surface.
4. The Panel Module should not be touched with bare hands in order to protect its surface from
blemishes and damage.
5. It is recommended that you use clean soft gloves during the replacement work in order to protect not
only the display area of the Panel Module but also yourself.
Service Warning
L37X01A : The LCD panel made from IPS-Alpha is used for this product.
L42X01A : The LCD panel made from LPL is used for this product.
1.Features ······················································· 3
2.Speci
fi cations ··············································· 4
3.Component names ······································· 7
4.Service points ·············································· 10
5.Adjustment ·················································· 11
6.Troubleshooting ·········································· 17
7.Hotel Menu Operation ································· 20
8.Block Diagram ··········································· 23
9.Connection Diagram ································· 26
10.Wiring Diagram ·········································· 27
11.Printed Wiring Board Diagram ··················· 29
12.Disassembly Diagram ······························· 38
13.Replacement Parts List ····························· 45
Contents