Brother MFC-J6920DW, Service Manual

Page: 35 / 365

Confidential 2-1
CHAPTER 2 TROUBLESHOOTING
1 INTRODUCTION
1.1 See "Precautions for Troubleshooting and/or Disassembly/Assembly" at
the end of SAFETY INFORMATION. (Refer to page:
xxi )
1.2 Initial Check
Prior to proceeding to the troubleshooting procedures, make the following initial
checks:

Environmental conditions
(1) The machine is placed on a flat, firm surface.
(2) The machine is used in clean environment with temperature (10 to 35 °C) and
humidity (20 to 80 %.)
(3) The machine is not exposed to direct sunlight, excessive heat, moisture, or dust.
(4) The machine is transported in level.

Power requirements
(1) The power requirements described in label of the machine is supplied. Its variation
is /-10% of the rated voltage.
(2) All cables and harnesses are firmly connected.
(3) The fuses are not blown.

Recording paper
(1) A recommended type of paper is being used (refer to
Chapter 1, Section 10
"PAPER."
)
(2) The recording paper is not dampened.

Consumable Parts
(1) Ink cartridge (4 colors) is correctly set.

Others
(1) Low temperature
Motor may not run correctly due to excessive load for each drive in low
temperature environment. Warm the room temperature in such case.