Changhong Electric JUC7.820.00084054, Руководство по обслуживанию

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using menu if it is needed.
(3)Switching TV signal in factory mode can be done by directly pressing the number key. Press
【
MENU
】
key to back to the parent of working directory, press
【
EXIT
】
key to quit factory mode.
Chapter9 Instructions of HLS49J module Circuit Schematic Diagram
9-1 Clear EEPROM,and set the parameters after upgrading according to the upgrade instructions.
9-2 Check each channel/source to see if the image and sound are normal.
Appendix
：
Circuit Schematic Diagram