SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Plasma Display
July
2004
Digital Media Division
YK
No.006E
-1
55PMA550
55HDM71
(PW1)
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
have been
provided
for
in this HITACHI Plasma display
service manual
.
Be sure to read
all
cautionary items described in the manual to maintain safety before servicing.
Caution
1. Features --------------------------------------------------3
2. Speci
fi
cations--------------------------------------------4
3. Service point
s
-------------------------------------------5
4. Component names -------------------------------------6
5. New
T
echnology
-----------
-----------------------------7
6.
Service Modes
---------------------------------------- 10
7. Troubleshooting--------------------------------------- 2
9
8
. Basic circuit diagram--------------------------------- 3
5
9.
Printed wiring board diagram ---------------------- 4
2
1
0
.Block diagram ----------------------------------------- 4
7
1
1
.Connection diagram --------------------------------- 4
9
1
2
.Wiring diagram -------------------------------
-
---------
50
1
3
.Disassembly diagram-------------------------------- 5
2
1
4
.Replacement parts list------------------------------- 5
5
Contents
1. Since
the
Panel Module and front Filter are made of glass, handl
e
a
broken Module
and/or
Filter
with
sufficient
care
,
in order not to be injured.
2. Rep
air
work sh
ould not
be started
until
after the Panel Module and the AC/DC Power supply
have cooled
sufficiently.
3. Special care sh
ould be exercised
in the proximity of
the display area in order not to damage its surface.
4. The Panel Module sh
ould
not be touched with bare hand
s, as this will
protect its surface from stains.
5. It is recommended to use clean soft gloves during the rep
air
work in order to protect not only the dis
play
area of the Panel Module but also
the technician.
6. The Chip Tube of
the
Panel Module
(
located
in the
upper left
corner
of the back
of the glass panel)
is very fragile; as well, the flat
cables connecting
the
Panel to
the
drive circuit PWBs are very weak
. Take
care not to damage these, otherwise, the panel will n
ever
light again..
Service Warning
Summary of Contents for 55HDM71 - 55" Plasma Panel
Page 36: ...55PMA550 55HDM71 36 ...
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Page 47: ...47 55PMA550 55HDM71 10 Block diagram ...
Page 49: ...49 55PMA550 55HDM71 11 Connection diagram PW1 55V CONNECTION DIAGRAM ...
Page 50: ...50 55PMA550 55HDM71 12 Wiring diagram Wiring diagram 1 2 ...
Page 52: ...52 55PMA550 55HDM71 13 Disassembly diagram ...
Page 54: ...54 55PMA550 55HDM71 ...
Page 67: ...55P1 A BUS D2 PWB CND1 4 55P1 A BUS D1 PWB CND2 4 CND2 9 ...
Page 68: ...55P1 A BUS D4 PWB CND3 12 55P1 A BUS D3 PWB CND4 3 CND3 5 CND4 5 ...
Page 69: ...55P1 A BUS U2 PWB CNU1 4 55P1 A BUS U1 PWB CNU2 7 CNU2 4 ...
Page 70: ...55P1 A BUS U4 PWB CNU3 10 55P1 A BUS U3 PWB CNU4 5 CNU3 5 CNU4 3 ...
Page 71: ...55P1 LOGIC PWB CN9 ...
Page 72: ...CN23 55P1 X SUS PWB CN21 CN25 CN24 CN22 ...
Page 73: ...55P1 Y SUS PWB CN31 CN34 ...
Page 74: ...55PMA550 55HDM71 YK No 006E Digital Media Division QR60581 Printed in Japan JE ...