Sensor Operational Check - Brother IntelliFax-3550 Service Manual

MFC6550MC/7550MC/7650MC/9500
3.8

Sensor Operational Check

Function
This function allows you to check whether the eight sensors (document front sensor, docu-
ment rear sensor, sheet feeder cover sensor, cover sensor, registration sensor, paper ejec-
tion sensor, toner sensor, and hook switch sensor) operate normally.
The LED shows the "FRRETCCVRGHATNHK" when
- the document front sensor detects no paper (FR),
- the document rear sensor detects no paper (RE),
- the sheet feeder cover is closed (TC),
- the top cover is closed (CV),
- the registration sensor detects no paper (RG),
- the paper ejection sensor detects no paper (HA),
- the toner sensor detects toner (TN), and
- the hook switch sensor detects the on-hook state (HK).
Operating Procedure
(1) Press the 3 and 2 keys in this order in the initial maintenance mode.
The LCD should show "FRRETCCVRGHATNHK" if the detecting conditions of the nine
sensors are as defined above.
(2) Change the detecting conditions (e.g., insert paper through the document sensors or
the registration sensor, open the sheet feeder cover or the top cover, jam paper at the
paper outlet, remove the toner cartridge, and lift up the handset), and then check that
the indication on the LCD changes according to the sensor states.
(3) To stop this operation and return the equipment to the initial maintenance mode, press
the Stop key.
MFC 7550MC
status
status
Set Function Clear
A BC DE F
Hook
1 2 3
GH I J KL MNO
Hold
5
4 6
PQRS TUV WXYZ
Redial / Pause
8 9
7
Speed Dial
0
Key & Button Entry Order (2)
V – 48
Fine Fax
Voice Fax
Photo
status
S.Fine F/ T
Tel-index Resolution Mode
01 02 03
On/Off
13 14 15 Line
04 05 06
16 17 18
FF/Cont
07 08 09
Test/
19 20 21
Reset
10 11 12
Print
Shift
22 23 24
Priority
SIX ONE
IN
FAX PRINTER COPIER SCANNER PC FAX MESSAGE CENTER
Super
Coverpage Help
Q.Scan
L Speaker H
Record Erase Play
Photo
Stop
Sort
Enlarge/
Reduce Start
Copy