Sharp LC-50U35T Service Manual page 42

LC50/58/65U35T
Is 3.3V or 1.8V output from pin(6) of
IC1651?
YES
Are there the SD signals at input pins of
IC3301(CPU)?
YES
Check SC1651/IC3303 and its peripheral
circuits.
No detection of SD card
Are pin(3) of IC1651 3.3V?
NO
Check the connection of SD Card and peripheral circuits of
IC1651.
Check the SD signals (between SC1651 and IC3303) and its
peripheral circuits.
NO
[SC1651 SD interface pins]
pin(5)(CLK), pin(2)(CMD), pin(7/8/9/1)(DAT0/1/2/3).
[IC3303 SD interface pins]
pin(F3)(CLK), pin(D2)(CMD), pin(D1/E2/E1/F2)(DAT0/1/2/3).
6 – 20
YES
Check the
NO
peripheral cir-
cuits of
IC3303.