Brother MFC 685CW - Color Inkjet - All-in-One, Service Manual

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Confidential
9.2.2.4 Measuring of BER (Bit Error Rate) (Function code 196)
Function
This function is used to measure the BER (bit error rate) in data received through the wireless
communications link between the base unit (cordless PCB in the machine) and the cordless handset.
Operating Procedure
(1) On the cordless handset, press the Menu/OK , * , # , 1 , 9 , 6 , and # keys in this order in the
standby state.
The following appears on the handset's LCD.
Rx Quality
C* S* P* G** (BER in base unit)
C* S* P* G** (BER in cordless handset)
Where,
C: Count of CRC errors per 100 frames Max. = 9 Best = 0
S: Count of SYNC errors per 100 frames Max. = 9 Best = 0
P: Count of Parity errors per 100 frames Max. = 9 Best = 0
G: Count of LowGain selected per 100 frames Max. = 99 Best = 99
Note: For C, S, and P, the lower value, the higher RF sensitivity; for G, the higher value, the
higher sensitivity.
(2) Bring the cordless handset into contact with the antenna on the base unit (in the machine) and
check for a while that the measured values change.
The measured values come to the best ones and stay on. If not, the wireless communication is
abnormal.
(3) To return to the standby state, press the Off key twice.
9.2.2.5 Version Information on Cordless Handset (Function code 197)
Function
This function is used to check the version information on the cordless handset.
Operating Procedure
(1) On the cordless handset, press the Menu/OK , * , # , 1 , 9 , 7 , and # keys in this order in the
standby state.
The following appears on the handset's LCD.
PT: 3442 3108
FW: 4567
CP: 15678901
Where,
PT indicates the 8-digit compilation date of the internal host. The higher 4 digits are fixed to
3442; the lower indicates the date (in this example, 3108 means August 31).
FW indicates the 4-digit firmware version.
CP indicates the 8-digit CP version or revision.
(2) To return to the standby state, press the Off key.