Power Supply Rf-Part - Siemens S55 Repair Documentation
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Also See for S55:
- Manual (148 pages) ,
- User manual (141 pages) ,
- Operating instructions manual (137 pages)
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4.1 Power Supply RF-Part
The voltage regulator for the RF-part is located inside the
5.2).It generates the required 2,8V "RF-Voltages" named
The voltage regulator is activated as well as deactivated via
and
VCXOEN_UC
(Miscellaneous R6)
deactivation is used to extend the stand by time.
Circuit diagram
Between Power Supply ASIC and RF-Part a resistor based interface consisting of
resistor
R841
for
VCC2_8
V1.00
S55/S57
provided by the EGOLD+. The temporary
and
R843
for
VCC_SYN
Page 7 of 49
Company Confidential © Copyright Siemens AG
ASIC
D361.(see chapter
VCC2_8
and
SLEEPQ
(TDMA-Timer H16)
VCC2_8
VCC_SYN
is used .
ICM MP CCQ GRM
VCC_SYN
.
12/02
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