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5.2.7 AUDIO (DIGITAL)
A
Has the sound been emitted from the HDMI input Yes Does it select AUTO or DIGITAL with the HDMI AUDIO switch? Yes Is a signal output from IC6601? (pins 78, 81 to 84) No Check around IC6601 and check the communications between IC6601 and the microcomputer. No Select the corresponding signal with the HDMI AUDIO switch.
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Yes Have the signals arrived at IC7202 (pin 14) and IC7203 (pins 2, 5, 11, 14)? Yes Are signals output from IC7202 (pin 12) and IC7203 (pins 4, 7, 9, 12)? Yes Has the signal arrived at IC6901? (pins 4, 6 to 9) Yes Is a signal output from IC6901?
C
No
B
Check the circuit between IC6601 and IC7202.
No
Check around IC7202 and IC7203.
No
Check the IC7202 and between IC7203 and IC6901.
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No Check around the IC6901.
Yes Is the communication between each IC (HDMI_RX, HDMI_TX) on the MAIN Assy and the microcomputer nomal? Yes Has the symptom been settled when the MAIN Assy is replaced? Yes End No Failure in the cables and connecting tool. No Check around the IC that is found to have a failure in communication and the microcomputer.
D
Waveforms
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IC6601 - pin 78 etc. V: 1 V/div H: 1 μS/div
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IC6901 - pin 4 etc. V: 1 V/div H: 1 μS/div
E
F
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PDA-V100HD
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