Lcd Interface; Keyboard - Nokia 2630 RM-298 Service Manual

RM-298; RM-299
System Module
Signal From
name
AFC UEMCLit
e
(AFCOUT
)
TxC UEMCLit
e
(AUXOUT
)
VCXOTEMP RF-IC
PATEMP RF-IC

LCD interface

The display is controlled by phone processor UPP.
The main LCD module is connected to the PWB by a 24-pin board-to-board connector.
The sub LCD module is connected to the PWB by a 10-pin board-to-board connector.

Keyboard

A 5 X 5 matrix keyboad consists of 21 keys, one 10-channel integrated passive filiter arrays with downstream
ESD protection of >8KV connect the matrix keyboard to UPP.
Issue 1
To Parameter
VCTCX Voltage Min
O
Max
Resolution
Load
resistance
and
capacitanc
e
Source
Impedance
Output
impedance
RF-IC Voltage Min
Max
Source
Impedance
Resolution
UEMCL Input
ite voltage
range
Input
resistance
Resolution
UEMCL Voltage at
ite -20oC
COMPANY CONFIDENTIAL
Copyright © 2007 Nokia. All rights reserved.
Min Typ Max
0.0 0.1
2.4 2.55
11
1
100
200
10
0.1
2.4
200
10
0 2.7
900 6000
10
1.57
Unit Function
V Automatic Frequency
Control signal for
VCTCXO
Programmable
bits
kW
nF
W
MW Path powered down
V Transmitter power
level and ramping
control, Ref UEMCLite
RF converter
specification
W
bits
V
Ohm
bits
V Usage depends of the
RF design
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