Sharp BD-HP75U

BD-HP75U
4 – 4
Flowchart 6
Flowchart 7
No Internet connection (Ethernet terminal).
Are there signals at pins 2, 3, 4 and 5 of J7001 (USB/LAN
connector)?
YES
Check the terminals and soldering condition of J7001 as well as LAN
cable. Replace as required.
Check the IP address and other settings.
NO
Is 3.3V power applied at pins 1, 9 and 19 of IC7001 (Ether-
net transceiver)?
NO Check the FB7001, FB7002 and D3.3V power line.
YES
Is there 3.3V input at pin 15 (reset) of IC7001? NO Check R7331, C26 (ET_RST) of IC7201 (system LSI) and their periph-
eral circuits.
YES
Is there clock input at pin 5 (clock) of IC7001? NO Check R7027, D5 (ET_CLK) of IC7201 and their peripheral circuits.
YES
Are there input signals at pins 17 (ET_TXD0) and 18
(ET_TXD1) of IC7001?
NO Check R7029, R7030, D6 (ET_TXD0) and E7 (ET_TXD1) of IC7201 and
their peripheral circuits.
YES
Check IC7001 and its peripheral circuits. Replace as
required.
Remote controller failure.
Is 3.3V power applied at pin 2 of RMC1301 (remote control
receiver)?
NO Check R1308 and AT3.3V power line.
YES
Use the remote controller. Is there pulse output signal at pin 1 of
RMC1301?
NO Check the soldering condition of RMC1301. Replace as required.
YES
Use the remote controller. Is there pulse input signal at pin 36 of
IC2501 (front microprocessor)?
NO Check SC1301, CN2501, FFC harness, R2519 and their peripheral
circuits.
YES
Check IC2501 and its peripheral circuits. Replace as required.