Table of Contents
Advertisement
11.1.3.1. Checking IR Circuit
NOTE1: Even if Main P.C.B. is not removed, IR Circuit can be checked.
NOTE2: Prepare the Oscilloscope
1. Remove Top Case.
2. Turn on the power. Then if "Welcome ..." was displayed on the TV monitor, press [ENTER] to advance next stage.
Then press [ENTER] and proceed to step 6.
(*After "EPG" has been set up, this indication will not appear.)
3. Press [FUNCTIONS].
4. Select "TV GUIDE", and then press [ENTER].
5. Press [ENTER] to advance next stage.
6. Press [ENTER] to advance next stage.
7. Select "USA", and then press [ENTER].
8. Input "0 2 0 3 2", and then press [ENTER].
9. Select "Yes", and then press [ENTER].
10. Select "Yes", and then press [ENTER].
11. Select "Ch3", and then press [ENTER].
12. Press [ENTER].
13. Select "Not Listed", and then press [ENTER].
14. Connect scope to JK8001-4
15. Press [ENTER], and then if the P.C.B. is "OK", pulse signals of approx. 4.5Vp-p are output twice from JK8001-4.
(When you want to check again, select "Test this code again" and press [ENTER], then Pulse signals are output again.
*Recommended ranges of the Oscilloscope:
V: DC range, and 1V/div.
T: 1msec. /div.
41
DMR-EH55P9 / DMR-EH55PC9
Advertisement
Table of Contents
