
* T748 DISPLAY PART TROUBLESHOOTING
O
N
O
N
K
O
K
O
G
.
N
G
.
N
K
O
K
O
NO LED LIGHT UP
IS THE POWER
CORD
CONNECTED?
PLUG THE POWER
CORD INTO THE
WALL OUTLET
SECURELY
CHECK AT
CN501 PIN15
"H"
CHECK POWER
SUPPLY CIRCUIT
CHECK HOST
MCU(IC101) PART
CHECK & REPLACE
LED(D5032) or
Q5031 Q5032 Q5033
NO DISPLAY ON VFD
CHECK AT
CN502 PIN1,
PIN3, PIN5
CHECK POWER
SUPPLY CIRCUIT
CHECK AT
FIP51 PIN1~2,
58, 61~62
CHECK OPEN
CIRCUIT or SHORT
CIRCUIT
CHECK & REPLACE VFD
CHECK & REPLACE
LED(D5032) or
Q5031,Q5032,Q5033,
Q5036,Q5037
CHECK & REPLACE VFD
2-88
Содержание T 748
Страница 1: ...L A U N A M E C I V R E S AV Surround Sound Receiver T748 AV Surround Sound Receiver T748 ...
Страница 6: ...DISASSEMBLY REMOVAL OF FRONT PANEL 1 6 ...
Страница 7: ...PRINCIPAL PART LOCATION 1 7 ...
Страница 18: ...IC 211 MX29LV32DTTI 70G FLASH OF DSP 2 6 ...
Страница 19: ...2 7 ...
Страница 29: ...2 17 BLOCK DIAGRAM ...
Страница 40: ...IC 913 IC 918 TC74VCX541FT OCTAL BUS BUFFER 2 28 ...
Страница 44: ...BLOCK DIAGRAM MCU DSP PART 2 32 2 33 ...
Страница 45: ...BLOCK DIAGRAM AUDIO PART 2 34 2 35 ...
Страница 46: ...BLOCK DIAGRAM HDMI PART 2 36 2 37 ...
Страница 62: ...2 68 2 69 PRINTED CIRCUIT BOARD FRONT TOP VIEW ...
Страница 63: ...2 70 2 71 FRONT BOTTOM VIEW ...
Страница 64: ...2 72 2 73 INPUT TOP VIEW ...
Страница 65: ...2 74 2 75 INPUT BOTTOM VIEW ...
Страница 66: ...2 76 2 77 MAIN TOP VIEW ...
Страница 67: ...2 78 2 79 MAIN BOTTOM VIEW ...
Страница 68: ...2 80 2 81 SUB TOP VIEW ...
Страница 69: ...2 82 2 83 SUB BOTTOM VIEW ...
Страница 70: ...2 85 HDMI BOTTOM VIEW 2 84 HDMI TOP VIEW ...