– 99 –
11. Waveform with Oscilloscope
(1) Crystal (10 MHz) (2) RESET (Power on reset)
Crystal Pin 33 of IC9 Upper : RESET input Pin 4 of IC2
Time/Div : 0.2 µs Lower : RESET output Pin 5 of IC2
Volt/Div : 1V Time/Div : 10 ms
Volt/Div : 2V
(3) Protection Circuit (4) Head Energizing Control Signal
Upper : RESET Pin 5 of IC2 Upper : HD-EN Pin 39 of IC4
Lower : WD OUT Pin 59 of IC9 Lower : HD1 Data Pin 44 of IC4
Time/Div : 5 ms Time/Div : 0.1 ms
Volt/Div : Upper 2V Volt/Div : 2V
Lower 1V
(5) Print Head Control Signal and Waveform (6) Carriage Motor Common Control Signal and
Diving Signal
Upper : HD1 Dara Pin 44 of IC4 Upper : CR-CMN Control Signal Pin 34 of IC4
Lower : HD1 Pin 1 of CN7 Lower : CR-CMN Driving Signal Pin 3 of CN5
Time/Div : 0.5 ms Time/Div : 0.5 ms
Volt/Div : Upper 5V Volt/Div : Upper 1V
Lower 20V Lower 10V
To Next Page
Loading...
Need help?
General
