User Guide

44
5. Analog audio
5.1. 8U-210078-2
6. No Ether-net Operation
7. No SD Card Operation
No sound is output
Is the voltage of ±7V supplied to
8U-210078-2 CX194?
Is the audio signal transmitted to
8U-210080-1 CY193?
Is the audio signal transmitted to
8U-8U-210078-2 CX107?
Once more, checking the connection of the connector.
When can specify the trouble of the channel and function, check the signal route
where it corresponds.
The power supply of ±7V is repaired.
The power amplier is repaired.
Is the connector correctly connected
with ucom board (8U-210079-1 &
8U-210079-3)?
Connect the connectors properly.
The ucom board (8U-210079-1) is
repaired.
YES
NO
YES
NO
NO
YES
YES
YES
Check LED status on LAN connector in access mode
Green : ON
Orange : Brinking
Check SDDATA0-3, SDCLK, SDCD, and SD_VDD33
• [CX164] 2, 4, 6, 8, 11, 12, 14, 16Pin
Check Soldering.
• [IC200] and Circumference
Check Soldering.
• [X300], [CY121] and Circumference
• [JK802], [CX121] and Circumference, on MAIN Unit
Check Soldering.
• [CX164] and Circumference
N.G.
N.G.
O.K.