2
9
55PMA550/55HDM71 (PW1)
Troubleshooting (POWER)
Yes
Yes
Yes
Yes
Speaker
Picture is displayed. But no sound
Are the voltages
applied to EAJ1
pins
of the Audio PWB?
No
Audio PWB
+ 5V
+12V
GND
No
Are there signals
on Speaker Terminals?
Audio PWB
Are the signals
applied to EAF1
pins
of the Audio PWB?
No
Formatter PWB or
Video PWB
No
Yes
Power cannot be turned on (LED does not light)
Is the input voltage
applied to Power supply unit?
(CN61
,
)
AC inlet
Power switch
AC Fuse
F951 T10A 250V
Are the voltages
applied to CN63
pins
and CNPPS
pins
of Power supply unit ?
[CN63]
+5V
[CNPPS]
+30V
+3.3V
+ 5V
+12V
+6V
+10V
Joint / Formatter PWB
Power supply unit
No
Yes
Filter PWB
L ch
R ch
GND
Check
Speaker terminal and
Speaker cord.
Unlocked
Check
Locked
No sound
Are the voltage
applied to EAJ1
pins?
(When EAJ1 is
disconnected.)
Power supply
unit
No
Summary of Contents for 55HDM71 - 55" Plasma Panel
Page 36: ...55PMA550 55HDM71 36 ...
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Page 39: ...55PMA550 55HDM71 39 ...
Page 40: ...55PMA550 55HDM71 40 ...
Page 41: ...55PMA550 55HDM71 41 ...
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 ...