Adjustment Procedure; Adjustment Flow Diagram - Nokia 447PRO Service Manual

7. Adjustment Procedure

The following procedure must be carried out in case of large service operations e.g. when a circuit
board or nonvolatile memory ICA203 has been replaced by a new one.
The order of adjustments explained here has been found to produce the desired result with the mini-
mum of effort. Adjustments can also be made in another order or completely separately.

7.1. Adjustment Flow Diagram

START
Assemblies
YES
or components
replaced
NO
YES
ICA203
replaced
NO
Reset user
memory for display
modes to be ad-
justed
See 3.1.2
Activate service mode and perform 7.3
para 1), 2) & 3) with
91.15 kHz/85 Hz (NCE642)
Perform 7.3 para 4) and 5) for all display modes.
The new settings are stored automatically.
(4.2.5)
26
Perform Preliminary preparations
See 7.2
7.2.4 Initializing
Switch OFF the monitor and
activate service mode
Initializing
Switch OFF the monitor
7.3 Geometry
The most sensitive colour
Maximum/Minimum contrast
Adjust the convergence in the middle of
the tube with static adjustments
Adjust the convergence in the corners of
the tube with dynamic adjustments
The new settings are stored automatically.
Exit from service mode
STOP
447R
6.4 Gray scale
See 7.4.1
Low light
See 7.4.2
High light
See 7.4.3
See 7.5
Focus
See 7.6
7.7 Convergence
See 7.7.3
See 7.7.4
(4.2.5)
See 4.2.6