23
LC-37HV4E
Dropout (relating to gray scale)
Set PATTERN1 under
PATTERN on the adjustment
process menu to "2". Is the
gray scale pattern displayed
properly?
Send "6071" and "6303" to
LCD DATA under OTHER on
the adjustment process
menu to display the QS drive
test pattern and then send
"6102". Is the gray scale
displayed properly?
Identify the colour signal
presenting a problem in the gray
scale test pattern.
Is there any problem with the
connections and resistances
between IC4501 and SC4601-
SC4604?
YES
YES
YES
NO
NO
Check IC4501 and
SC4601-SC4604.
Check IC4702, IC4902
and the circuits around
them.
NO
Send "6202" to LCD DATA
under OTHER on the
adjustment process menu. Is
the test pattern displayed
properly at intervals of one
dot?
Check the connections
between IC4701 and
IC4501.
NO
NO
YES
YES
Send "6203" to LCD DATA
under OTHER on the
adjustment process menu. Is
the test pattern displayed
properly at intervals of one
dot?
Check the connections
between SC2201 and
IC2206, between IC2206 and
IC4701, and between IC2206
and IC4901.
Check the connections
between IC4901 and
IC4501.
Check the FFC
connected to SC4601-
SC4604.
YES
YES
YES
No image comes out.
Is a HIGH appearing
at the RESET terminal
of pin (3) of IC2206?
Check the circuits
around X2201
connected to pin (161)
of IC2206.
NO
Check IC4903 and later
ICs (IC4701, IC4702,
IC4901 and IC4902).
Is a clock (91.3 MHz)
appearing at TL2201
(pin (102) of IC2206)?
Is X2201 connected to pin
(161) of IC2206 oscillating
(18.26MHz)?
NO
Check X2201 and the
circuits around it.
NO
YES
YES
Is a normal sync
signal appearing at
TL2202 (pin (97) of
IC2206), TL2203 (pin
(96) of IC2206) and
TL2204 (pin (95) of
IC2206)?
Is IC2202 (CONFIG ROM)
operating?
Failure of IC2206
NO
Check IC2202 and the
circuits around it.
NO
TROUBLE SHOOTING TABLE (Continued)
Summary of Contents for AQUOS LC-37HV4E
Page 26: ...26 LC 37HV4E 8 7 10 9 6 5 4 3 2 1 A B C D E F G H CHASSIS LAYOUT ...
Page 27: ...27 LC 37HV4E 17 16 19 18 15 14 13 12 11 10 ...
Page 33: ...LC 37HV4E 33 6 5 4 3 2 1 A B C D E F G H Ë Ë Ë Ë Ë R C LED Unit Display ...
Page 34: ...34 LC 37HV4E 8 7 10 9 6 5 4 3 2 1 A B C D E F G H Ë MAIN Unit 1 9 Display ...
Page 35: ...35 LC 37HV4E 17 16 19 18 15 14 13 12 11 10 ...
Page 36: ...36 LC 37HV4E 8 7 10 9 6 5 4 3 2 1 A B C D E F G H Ë MAIN Unit 2 9 Display ...
Page 37: ...37 LC 37HV4E 17 16 19 18 15 14 13 12 11 10 ...
Page 38: ...38 LC 37HV4E 8 7 10 9 6 5 4 3 2 1 A B C D E F G H Ë MAIN Unit 3 9 Display ...
Page 39: ...39 LC 37HV4E 17 16 19 18 15 14 13 12 11 10 ...
Page 40: ...40 LC 37HV4E 8 7 10 9 6 5 4 3 2 1 A B C D E F G H Ë MAIN Unit 4 9 Display ...
Page 41: ...41 LC 37HV4E 17 16 19 18 15 14 13 12 11 10 ...
Page 42: ...42 LC 37HV4E 8 7 10 9 6 5 4 3 2 1 A B C D E F G H Ë MAIN Unit 5 9 Display ...
Page 43: ...43 LC 37HV4E 17 16 19 18 15 14 13 12 11 10 ...
Page 44: ...44 LC 37HV4E 8 7 10 9 6 5 4 3 2 1 A B C D E F G H Ë MAIN Unit 6 9 Display ...
Page 45: ...45 LC 37HV4E 17 16 19 18 15 14 13 12 11 10 ...
Page 46: ...46 LC 37HV4E 8 7 10 9 6 5 4 3 2 1 A B C D E F G H Ë MAIN Unit 7 9 Display ...
Page 47: ...47 LC 37HV4E 17 16 19 18 15 14 13 12 11 10 ...
Page 48: ...48 LC 37HV4E 8 7 10 9 6 5 4 3 2 1 A B C D E F G H Ë MAIN Unit 8 9 Display ...
Page 49: ...49 LC 37HV4E 17 16 19 18 15 14 13 12 11 10 ...
Page 50: ...50 LC 37HV4E 8 7 10 9 6 5 4 3 2 1 A B C D E F G H Ë MAIN Unit 9 9 Display ...
Page 51: ...51 LC 37HV4E 17 16 19 18 15 14 13 12 11 10 ...
Page 52: ...52 LC 37HV4E 8 7 10 9 6 5 4 3 2 1 A B C D E F G H Ë Ë Ë Ë Ë AUDIO Unit 1 2 Display ...
Page 53: ...53 LC 37HV4E 17 16 19 18 15 14 13 12 11 10 ...
Page 54: ...54 LC 37HV4E 8 7 10 9 6 5 4 3 2 1 A B C D E F G H Ë Ë Ë Ë Ë AUDIO Unit 2 2 Display ...
Page 55: ...55 LC 37HV4E 17 16 19 18 15 14 13 12 11 10 ...
Page 56: ...6 5 4 3 2 1 A B C D E F G H LC 37HV4E 56 Ë Ë Ë Ë Ë INVERTER 1 Unit Display ...
Page 57: ...LC 37HV4E 57 6 5 4 3 2 1 A B C D E F G H Ë INVERTER 2 Unit Display ...
Page 58: ...6 5 4 3 2 1 A B C D E F G H LC 37HV4E 58 Ë Ë Ë Ë Ë INVERTER 3 Unit Display ...
Page 59: ...LC 37HV4E 59 6 5 4 3 2 1 A B C D E F G H Ë INVERTER 4 Unit Display ...
Page 60: ...60 LC 37HV4E 8 7 10 9 6 5 4 3 2 1 A B C D E F G H Ë Ë Ë Ë Ë Power Unit Display ...
Page 61: ...61 LC 37HV4E 17 16 19 18 15 14 13 12 11 10 ...
Page 62: ...6 5 4 3 2 1 A B C D E F G H LC 37HV4E 62 Ë KEY Unit Display ...
Page 65: ...65 LC 37HV4E 17 16 19 18 15 14 13 12 11 10 ...
Page 68: ...68 LC 37HV4E 8 7 10 9 6 5 4 3 2 1 A B C D E F G H MAIN Unit Side B Ë Ë Ë Ë Ë Display ...
Page 69: ...69 LC 37HV4E 17 16 19 18 15 14 13 12 11 10 ...
Page 72: ...72 LC 37HV4E 8 7 10 9 6 5 4 3 2 1 A B C D E F G H AUDIO Unit Component Side Ë Ë Ë Ë Ë Display ...
Page 73: ...73 LC 37HV4E 17 16 19 18 15 14 13 12 11 10 ...
Page 84: ...6 5 4 3 2 1 A B C D E F G H LC 37HV4E 84 Ë Ë Ë Ë Ë Display POWER Unit Component Side ...
Page 85: ...LC 37HV4E 85 6 5 4 3 2 1 A B C D E F G H Ë Ë Ë Ë Ë Display POWER Unit Wiring Side ...