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4.8.0 OSCILLOSCOPE FIGURES (2851pm)
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Carriage Motor Drive Pulse
One line space operation, detent on phase
Horizontal 5 ms/div
Vertical top trace 50V /div
Middle and bottom trace 5V /div
Top trace
- Carriage Motor Phase A
(P7 -1 or A23B42)
Middle trace - Input to driver card (A23B50)
Bottom trace - Carriage go (A23G63)
Sync negative on carriage go
---- -----
----- -----
----- ----- -----
-----
-----
---_
...
Carriage Motor Drive Pulse
One line space operation, detent off phase
Horizontal 5 ms/div
Vertical top trace 50V /div
Middle and bottom trace 5V /div
Top trace
- Carriage Motor Phase Not B
(P74 or A23B45)
Middle trace - Input to driver card (A23B50)
Bottom trace - Carriage go (A23G63)
Sync negative on carriage go
Carriage Motor Drive Pulse
Three line space operation
Horizontal 5 ms/div
Vertical top trace 50V /div
Middle and bottom trace 5V /div
Top trace
- Carriage Motor Phase A
(P7 -1 or A23B42)
Middle trace - Input to driver card (A23B50)
Bottom trace - Carriage go (A23G63)
Sync negative on carriage go
-
1+
~ -~
--- ----------j----
--
-
Carriage Advance Pulses
Six lines/inch
Horizontal 2 ms/div
Vertical 2V /div
I
--
--
-
Top trace - Carriage Advance Pulses (A23G46)
Bottom trace - Carriage go (A23G63)
Sync negative on carriage go
-r-
-
-t-
-
-:
-
-t-
-r-
-
-
r------
-
- :-------t----t--t----t
r-- --
--- - - t---
---t-----t---t----
r-
-r-
-r-
-r-
-r-
-:t-
-r-
-r-
-r-
-r- -
Carriage Advance Pulses
Eight lines/inch
Horizontal 2 ms/div
Vertical 2V /div
Top trace - Carriage Advance Pulses (A23G46)
Bottom trace - Carriage 99 (A23G63)
Sync negative on carriage go
-
-r-
--
+ --
~~
-t-
-r-
-t-
- -
-
----- --------
.-!---~------
----- ----- ----- ----- -----
I
+----r--r------t---;---;-----;
Hammer Fire Pulse
Horizontal 5 ms/div
Vertical 5V /div
Top trace - Input to hammer driver card
Bottom trace - Fire hammer pulse to hammer coil
Sync internal on fire hammer pulse
Belt Printer
2851pm
4-159
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