Nokia 6225 サービスマニュアル
RH-27
Troubleshooting - RF (Part 1)
CCS Technical Documentation
Page 22
©
2003 Nokia Corporation Confidential
Issue 1 11/2003
Supply Lines Measurement Using Phoenix
12 RF-related Supply Lines Distribution
Baseband
Baseband
Regulator component
Regulator component
Before writing to phone, read the RF Regulators from phone to determine current state.
There are 12 RF
There are 12 RF
-
-
related regulators
related regulators
1.
1.
VR1A
VR1A
2.
2.
VR1B
VR1B
3.
3.
VR2
VR2
4.
4.
VR3
VR3
5.
5.
VR4
VR4
6.
6.
VR5
VR5
7.
7.
VR6
VR6
8.
8.
VR7
VR7
9.
9.
VrefRF1
VrefRF1
10.
10.
VrefRF2
VrefRF2
11.
11.
VIO
VIO
12.
12.
VCORE
VCORE
UEM IC
UEM IC
VIO
VIO
= 1.8VDC
= 1.8VDC
V
V
REF
REF
RF1
RF1
= 1.35VDC
= 1.35VDC
VR5
VR5
= 2.78VDC
= 2.78VDC
VR3
VR3
= 2.78VDC
= 2.78VDC
V
V
REF
REF
RF2
RF2
= 1.35VDC
= 1.35VDC
VR7
VR7
= 2.78VDC
= 2.78VDC
VR2
VR2
= 2.78VDC
= 2.78VDC
VR1A
VR1A
= 4.75VDC
= 4.75VDC
VR4
VR4
= 2.78VDC
= 2.78VDC
VR6
VR6
= 2.78VDC
= 2.78VDC
VR1B
VR1B
= 4.75VDC
= 4.75VDC
VCORE
VCORE
= 1.5VDC
= 1.5VDC