Waveform; Abnormal Detect And Lock Protect Block - Panasonic DP-MB310EU Service Manual

6.9.5.

Waveform

(1)Full speed (H:20usec/Div)
(2)Half speed (H:20usec/Div)
6.9.6.

Abnormal Detect and Lock Protect Block

This block detects the FAN abnormal condition such as FAN motor lock or Extra low current caused by insufficient connector inser-
tion of FAN.
When FAN motor abnormal condition occurs, it may cause damage to FAN itself and machine by the overheat.
So at the abnormal condition, FAN motor current must be stopped automatically and machine operation must be stopped.
When error condition is detected, display shows "Call Service 4"
Point D(1V/Div)
Point C(2V/Div)
Point B(2V/Div)
Point A(2V/Div)
3.3V
Point F(5V/Div)
Point E(10V/Div)
0.6V
Point D(1V/Div)
Point D(1V/Div)
Point C(2V/Div)
1.2V
Point B(2V/Div)
3.3V
Point A(2V/Div)
Peak Level
Point F(5V/Div)
Point E(10V/Div)
Point D(1V/Div)
KX-MB2230EU/ KX-MB2270EU/ KX-MB2515EU/ KX-MB2545EU/ KX-MB2575EU/ DP-MB310EU
0.6V
3.1V
3.3V
Ground level
20V
24V
Ground level
1.2V
Ground level
30KHz
9.8V
12V
0.6V
67
Peak Level
0.6V