Sdram Clock; Tray Open/Close Signal - Zenith XBS344 Series Service Manual

2. SDRAM CLOCK

1) MT1379 main clock is at 27MHz(X501)

3. TRAY OPEN/CLOSE SIGNAL

1) Tray open/close waveform
DCLK = 93MHz, Vp-p=2.2, Vmax=2.7V
FIG 2-1
FIG 3-1
3-66
(IC502,IC503 PIN 35)
OPEN((PDM03 PIN7)
CLOSE(PDM03 PIN8)
TROPEN(IC402 PIN 1)
TRCLOSE(IC402 PIN 2)