Benefon Twin, Service Manual

Page: 19 / 53

08.02.2002
3gp_71sw21gb.fm 7
Product: TGP71EU & TGP73EU / Local Service
4.3.6 Tuning menu
This menu item allows the user to tune an individual setting related to the phone.
4.3.6.1 TX Power ramp
This menu item allows the user to adjust the TX power levels on both GSM and DCS
bands.
4.3.6.2 RX Gain control
This menu item allows the user to adjust the RX gain control values for different sig-
nal levels. A routine for automatic adjustment with CMD 55 is available.
4.3.6.3 LCD & Buzzer test
This menu item allows user to change the LCD contrast setting. Note that too dark a
setting may cause the display to “flicker” in the light of fluorescent tubes.
Buzzer test enables to check the buzzer functioning.
4.3.6.4 Battery values
This menu item allows the user to measure and store the battery voltage correction
value. Be sure to apply to the phone’s exact operating voltage of 4,32 V with external
power adapter.