HP CP4525DN Laser CC494A#ABA manual Manual sensor test special-mode test, Default state of bits

Manual sensor test (special-mode test)

Use this diagnostic test to manually test the product sensors and switches. Each sensor is represented by a letter and number on the control panel display.

1.Press the Home button .

2.Press the down arrow to highlight the DIAGNOSTICS menu, and then press the OK button.

3.Press the down arrow to highlight the MANUAL SENSOR TEST option, and then press the OK button.

To exit this diagnostic, press the Stop button , and then select EXIT DIAGNOSTICS.

Menus cannot be opened during this test, so the OK button serves the same function as the Stop button

.

Table 3-3Manual sensor diagnostic tests

Sensor or switch name	Sensor or switch number
A TOP (top of page) sensor	SR20
B loop 1 sensor	SR14
C loop 2 sensor	SR15
D fuser delivery sensor	SR5
E duplex re-pickup sensor	SR22
F output bin full sensor	SR6
G	Not used
H	Not used
I developer alienation	SR11
J fuser pressure-release sensor	SR7
K primary transfer-roller-disengagement sensor	SR9
L media sensor	SR21
M front door open	SW5
N right door open	SW6

When performing these tests, watch for the corresponding bit to toggle from 1 to 0 or 0 to 1. It can take a few seconds for bits to toggle.

Table 3-4		Default state of bits
Label	A	B	C	D	E	F	G	H	I	J	K	L	M	N
Bit	1	1	1	1	0	0	0	0	0	1	0		0	0

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