
* T748 HDMI PART TROUBLESHOOTING
G
.
N
G
.
N
K
O
K
O
G
.
N
G
.
N
OK
N.G
OK
N.G
CHECK AT POWER
SUPPLY
CHECK AT CN901
WAFER & INPUT PCB
REGULATOR & IC
REPLACE
CHECK AT CN901
PIN1(+12V), PIN5(+5.6V),
PIN9(+2.5V), PIN13(+12V)
CHECK AT IC911, IC912,
IC913, IC917, IC918,
IC915, IC916
CHECK AT POWER
SUPPLY CIRCUIT &
IC REPLACE
NO HDMI AUDIO
OUT
REPLACE HDMI
JACK or CONNECT
THE HDMI CABLE
INTO THE JACK
CHECK HDMI JACK
IS POWER APPLIED
CORRECTLY TO EACH
POINT?
CHECK AT CN903 PIN
2,3,4,6,7,8,9
CHECK AT
RN950, RN951, RN953
RN953
CHECK POWER
SUPPLY CIRCUIT
(CHECK IC POWER
PIN)
CHECK OPEN
CIRCUIT or SHORT
CIRCUIT
CHECK OPEN
CIRCUIT or SHORT
CIRCUIT
OK
N.G
RN953
CHECK AT IC913
PIN2 ~ PIN9,
PIN11 ~ PIN18
CIRCUIT
CHECK OPEN
CIRCUIT or SHORT
CIRCUIT
2-86
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 ...