Publication Number 53923. Issue 3, March 2016
Wayfarer 6 Generic Service Manual
Page 94
8.2.7
Colour Display Faulty
•
No Backlighting or graphics displayed
Possible causes:-
(a)
Display cable faulty PL10 console PCB.
(b)
Display cable faulty PL6 keyboard PCB.
(c)
iMX53 processor board faulty.
(d)
Console control board faulty.
(e)
Display faulty.
The following operations assume that the machine is correctly
powered up and that other functions (i.e. printer) are not impaired.
In order to check the continuity of the display cable assemblies (see
Figure 44), the front moulding must first be removed - see Paragraph
7.3.2.
Instructions for the removal of the iMX53 processor board, console
control board and display are given in Paragraphs 7.3.3, 7.3.6 and
7.3.12.
With reference to Figures 61 and 63, check the continuity of the
display cable assemblies. If the cable assemblies check out as
serviceable then the fault will be in the backlighting or data control
circuitry on the iMX53 processor board or the buffer circuitry on the
console control board or with the display itself. The display is
unserviceable.
8.2.8
Passenger Display Faulty
•
No Backlighting or graphics displayed
Possible causes:-
(a)
Display cable assembly faulty (PL1).
(b)
Printer control board faulty.
(c)
Display faulty.
The following operations assume that the machine is correctly
powered up and that other functions (i.e. printer) are not impaired.
In order to check the continuity of the passenger display cable
assembly (see Figure 49), the top display assembly must first be
removed - see Paragraph 7.5.1. If the cable assembly checks out as
serviceable then the fault will be in the backlighting or data control
circuitry on the printer control board or with the display itself.
If faulty then the printer control board must be replaced by a known
serviceable item (Paragraph 7.4.2 refers).
