Sharp BD-HP75U

BD-HP75U
4 – 2
Flowchart 2
Flowchart 3
No HDMI signal output.
Does the same trouble remain even by
replacing the TV and cable?
NO Check the TV and cable.
YES
Is the soldering of the terminals of
SC4201 (HDMI connector) as specified?
NO Correct the SC4201 soldering or replace
SC4201 itself.
YES
Is the voltage of over 2V applied at C14
(HDMI_HPD) of IC7201 (system LSI)?
NO Check Q4203 (level shift circuit) and its
peripheral circuits.
YES
Is there input signal of over 2V at pin 28
(F_HDMI_HPD) of IC2501 (front micro-
processor)?
NO
Check Q4203, Q4204 (level shift circuit)
and their peripheral circuits.
YES
Are there serial signals at F13
(HDMI_SCL) and E13(HDMI_SDA) of
IC7201 (system LSI) as well as pins 1
(FR_HDMI_SCL) and 2 (FR_HDMI_SDA)
of IC2501 (front microprocessor)?
NO
Check Q4201, Q4202 (level shift circuit)
and their peripheral circuits.
YES
Are there data and clock signals at pins 1,
3, 4, 6, 7, 9, 10 and 12 of SC4201 (HDMI
connector)?
NO
Is there 5V input at pin 18 of SC4201
(HDMI connector)?
NO
Check IC4204 (5V regulator) and
its peripheral circuits.
YES YES
Check A10 (HDMI_TX2N), B10 (HDMI_TX2P), A11 (HDMI_TX1N), B11 (HDMI_TX1P), A12
(HDMI_TX0N), B12 (HDMI_TX0P), A13 (HDMI_TXCN), B14 (HDMI_TXCP) of IC7201 (system
LSI) and its peripheral circuits.
No audio optical signal output.
Is there 5V input at pin 2 of J7201 (optical output connector)? NO Check Q7202, Q7203 (5V power switch) and their peripheral circuits.
YES
Is there serial signal (3.3V) at TL7209? NO Check R7250 and C19 (SPDIF) of IC7201 (system LSI).
YES
Check the soldering condition of J7201 (optical output connector)
or replace J7201 itself.