Denon AVR-1913 Service Manual page 92

Controlled waveform (I2C), when power is turned on : Check items (23)
Zoom
HSCL
330ms
HSDA
Timing waveform illustration from the start of CEC3.3V to when reset is released : Check items (27)
CEC3.3V
338ms
7850RESET
Timing waveform illustration from the start of CEC3.3V to when reset is released : Check items (30)
DV3.3V
10ms 10ms
320ms
Zoom
8002RESET
92