Sharp Aquos LC 26D7U, Service Manual

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58
LC-26D7U
LC-32D7U
LC-37D7U
TROUBLE SHOOTING TABLE
(Continued)
Are HDMI_Y/Pb/Pr and HDMI_H/V signals
supplied to pins (8), (6), (10), (14) and (12)
of MAIN unit connector (SC3201)
respectively?
Is IC1913 (E2PROM) accessed by I2C to
read out DDC I2C CLOCK/DATA when
HDMI equipment is connected?
Are signals supplied from HDMI (SC1901)
connector to input terminals H_RX0
±
(pins 44 and 43), H_RX1 ± (pins 48 and
47), H_RX2 ± (pins 52 and 51), and
H_RXC ± (pins 40 and 39) of IC1912
(HDCP_LSI)?
Check HDMI equipment settings.
Are HDMI_Y/Pb/Pr and HDMI_H/V signals
supplied to pins (3), (7), (27) of IC3703
(L.P.F.) and pins (4) and (12) of IC3701
(SYNC_SELECTER) respectively? Check IC3703, IC3701 and the
peripheral circuits.
Are HDMI_Y/Pb/Pr and HDMI_H/V signals
sent from pins (26), (28), (24), (20) and
(22) of AV unit connector (SC5701)
respectively?
Check IC1912 (HDCP_LSI) and the
peripheral circuits.
Check FD harness for disconnection.
Check IC1913 and the peripheral
circuits.
Is there HDMI_RST signal output at
output pin (6) of IC1914 (EXPANDER)?
Check IC1914 and the peripheral
circuits.
Check IC1912 and the peripheral
circuits.
No HDMI input picture
YES
YES
NO YES
YES
NO
NO
NO
YES
NO
YES
NO
1 Tip HDCP_LSI