Sdram Clock; Tray Open/Close Signal - LG HT953TV Service Manual

2. SDRAM CLOCK

1) ES8391 main clock is at 27MHz(X501)
DCLK = 93MHz, Vp-p=2.2, Vmax=2.7V

3. TRAY OPEN/CLOSE SIGNAL

1) Tray open/close waveform
OPENSW(
CLOSESW
CLOSE
LGE Internal Use Only
FIG 2-1
OPEN
FIG 3-1
5
2) Tray close waveform
6
7
8
9
2-14 Copyright © 2008 LG Electronics. Inc. All right reserved.
OPENSW
CLOSESW
OPEN
CLOSE
FIG 3-2
Only for training and service purposes
5
6
7
8
9