Nokia 7370, Руководство по обслуживанию

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The hardware module is not protected against water. Condensed or splashed water might cause malfunction.
Any submerge of the phone will cause permanent damage. Long-term high humidity, with condensation,
will cause permanent damage because of corrosion.
The hardware module complies with the SPR4 Operating Conditions.
Electrical characteristics
Table 16 Normal and extreme voltages
Voltage Voltage (V) Condition
General conditions
Nominal voltage 3.700
Lower extreme voltage 3.145 a
Higher extreme voltage 4.230 b
HW shutdown voltages
Vmstr+ 2.1 ± 0,1 Off to on
Vmstr- 1.9 ± 0,1 On to off
SW shutdown voltages
SW shutdown 3.1 In call
SW shutdown 3.2 In idle
Min operating voltage
Vcoff+ 3. 1 ± 0,1 Off to on
Vcoff- 2. 8 ± 0,1 On to off
a. ADC settings in the SW might shutdown the phone above this value.
b. During fast charging of an empty battery, this voltage might exceed this value. Voltages between 4.20 and
4.60 might appear for a short while.
Main RF characteristics
Table 17 Channel numbers and frequencies
System Channel number TX frequency RX frequency Unit
GSM900 0 < =n <= 124 F = 890 + 0.2*n F = 935 + 0.2*n MHz
975 <= n <= 1023 F = 890 + 0.2* (n -
1024)
F = 935 + 0.2*(n -1024) MHz
GSM1800 512 <= n <= 885 F = 1710.2 + 0.2*
(n - 512)
F = 1805.2 + 0.2* (n-512) MHz
GSM1900 512 <= n <= 810 F = 1850.2 + 0.2*
(n - 512)
F = 1930.2 + 0.2* (n-512) MHz
RM-70
Nokia Customer Care System module
Page 8 –22 COMPANY CONFIDENTIAL Issue 1
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