FRONT (IR and POWER LED) SECTION
FRONT (IR and POWER LED) SECTION
The IR board (located on the bottom left as viewed from the rear) contains the IR (Infrared
)
Remote
Sensor and Power LEDs. This board also connects to the Key Board.
The IR board receives it operating B+ via J1 pin 6 (STBY 3.5V).
The IR (Infrared) remote receiver can be measured (2V) at pin 9 of connector J1 or P2401 on the Main
board in Stand-By. During run pin 9 reads (1.98V).
The IR pulses (1.6V p/p) J1 pin 9 are sent to P2401 on the Main board and on to the Microprocessor
The IR pulses (1.6V p/p) J1 pin 9 are sent to P2401 on the Main board and on to the Microprocessor
(IC100) via pin C4.
The Front Power LEDs are controlled by pins 8 (Blue LED) and 12 (Red LED) of J1.
Th K
b
d i
t d t th IR b
d i J3
d
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J1 K
1
d K
2 li
The Key board is routed to the IR board via J3 and output on J1 Key 1 and Key 2 lines,
(Key 1 pin 4 and Key 2 pin 5). Arriving at P2401 pins 4 and 5 on the Main Board.
Then to the Microprocessor Pins A4 and B4.
November LCD TV 32LD350
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