Chapter 5 Service Functions - Brother HL-5440D Service Manual

CHAPTER 5 SERVICE FUNCTIONS

Describes the maintenance mode which is exclusively designed for the purpose of checking
the settings and adjustments using the buttons on the control panel. This chapter also covers
not-disclosed-to-users function menus, which activate settings and functions or reset the
parts life.
1. MAINTENANCE MODE ................................................................................................ 5-1
1.1 How to Enter Maintenance Mode .......................................................................... 5-1
1.1.1 Method of entering end-user accessible maintenance mode..................... 5-1
1.1.2 Method of entering maintenance mode for service personnel ................... 5-2
1.2 List of Maintenance Mode Functions..................................................................... 5-3
1.2.1 List of maintenance mode functions for LCD models................................. 5-3
1.2.2 List of maintenance mode functions using [Go] button for LED models..... 5-4
1.3 Details of Maintenance Mode Functions for LCD Models ..................................... 5-6
1.3.1 Initialize EEPROM parameters (function code: 01, 91).............................. 5-6
1.3.2 Print test pattern (function code: 09) .......................................................... 5-7
1.3.3 Set worker switches (WSW) and
print worker switch setting data (function code: 10, 11) ............................. 5-8
1.3.4 Check LCD operation (function code: 12) ................................................ 5-10
1.3.5 Check control panel button operation (function code: 13)........................ 5-11
1.3.6 Display software version (function code: 25)............................................ 5-12
1.3.7 Set One Push Demo function (function code: 28) .................................... 5-13
1.3.8 Check sensor operation (function code: 32)............................................. 5-14
1.3.9 Display LAN connection status (function code: 33).................................. 5-16
1.3.10 Print Dump List (function code: 40) .......................................................... 5-17
1.3.11 Change USB No. return value / Adjust left-end print start position
on second side when duplex printing / Change ON/OFF setting
for Deep Sleep function (function code: 45) ............................................. 5-18
1.3.12 Continuous print test (function code: 67).................................................. 5-20
1.3.13 Print frame pattern (single-side printing) (function code: 69) ................... 5-22
1.3.14 Print frame pattern (duplex printing) (function code: 70) .......................... 5-24
1.3.15 Print solid pattern (function code: 71)....................................................... 5-26
1.3.16 Setting by country (function code: 74)...................................................... 5-27
1.3.17 Print maintenance information (function code: 77)................................... 5-29
1.3.18 Check fan operation (function code: 78) .................................................. 5-31
1.3.19 Display machine log information (function code: 80)................................ 5-32
1.3.20 Display machine error code (function code: 82)....................................... 5-34
1.3.21 Quit maintenance mode (function code: 99) ............................................ 5-34
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