Canon imageRUNNER 1750 Series Service Manual page 304

• Numeric keypad key 2
Checks to see if data can be correctly read from all areas of D-RAM (SDRAM). If an error
occurs making this check, the test is aborted, with an error appearing on the touch panel
(LCD).
D-RAM TEST
[1] - [2]
Press numeric keypad key 1
D-RAM TEST 29888KB
＊＊＊＊＊＊＊．．．．．．
29888KB：Total size of D-RAM memory (byte)
＊:Size of written to memory
:Size of read from memory
Press numeric keypad key 2
D-RAM TEST 29888KB
．．．．．．
29888KB：Total size of D-RAM memory (byte)
:Size of read from memory
● PG Output <(3) PG>
Press the numeric keypad key 3 on the test mode menu to select the PG output.
Press numeric keypad keys during the print test to generate test patterns as described below.
Nine kinds of service test patterns are available. Other test patterns are reserved for factory/
development purposes.
No.
SELECT NO.01 Grid
SELECT NO.02 Halftone
SELECT NO.03 Solid black output
SELECT NO.04 Solid white output
SELECT NO.05 ---(For R&D)
SELECT NO.06 4dot-6space (vertical)
SELECT NO.07 dot-6space (horizontal)
---(For R&D)
SELECT NO.08
SELECT NO.09 ---(For R&D)
8
Service Mode > Details of Service Mode > #TEST MODE > Details
Nomal end
D-RAM TEST 29888KB
complete (no error)
F-8-13
Test pattern
T-8-66
8 Service Mode > Details of Service Mode > #TEST MODE > Details
Procedure
1) Enter the PG number with numeric keys, then press the START key.
2) Select single-sided (SGL: 0) or double-sided (DBL: 1), then press the START key.
3) Enter the number of prints to be output (PG COUNT), then press the START key.
4) Specify the paper drawer (main unit), then press the START key.
Main unit cassette (ST_C: 0), 2nd cassette (OP_C: 1), Manual feed tray (MLT: 2)
5) Specify the paper eject slot, then press the START key.
Tray 1 (1_OUT: 0), Tray2 (2_OUT: 1)
6) Select a paper type, then press the OK key.
Plain paper (PLN: 0), Thick paper (TCK: 1),Thin paper (OHP: 2)
7) A test pattern is output.
● MODEM Test <(4) MODEM TEST>
These tests test modem and NCU transmission and reception. The modem tests check
whether signals are sent correctly from the modem by comparing the sound of the signals
from the speaker with the sounds from a normal modem.
End this test by pressing the Stop key.
Keypad Type
1 Relay Test Use it to turn on/off a selected relay to execute a switch-
over test.
2 Frequency test The modem sends tonal signals from the modular jack
and the speaker.
4 G3 signal transmission test The modem sends G3 signals from the modular jack
and the speaker.
5 DTMF signal reception test Use it to generate the DTMF signal coming from the
modem using the
telephone line terminal and the speaker.
6 Tonal signal reception test Use it to monitor a specific frequency and the DTMF
signal received from the telephone line terminal by
causing them to be indicated on the LCD (i.e., the
presence/absence as detected). The reception signal is
generated by the speaker.
8 V.34 G3 signal transmission test The modem sends V.34 G3 signals from the modular
jack and the speaker.
Relay Test
Press '1'or '2' on the keypad on the Modem test menu to select relay test mode. Use the
keypad to operate the various relays of the NCU. '2' on the keypad is used for 230V machine.
8-55
Description
T-8-67
8-55