User Guide
Table Of Contents
- Amendment Record Sheet
- Copyright
- Warnings and cautions
- For your safety
- Care and maintenance
- ESD protection
- Battery information
- Company Policy
- Nokia 1680c; Nokia 1681c Service Manual Structure
- 1 General Information
- 2 Service Tools and Service Concepts
- 3 Baseband Troubleshooting Instructions
- General baseband troubleshooting
- SIM related faults
- User interface
- Audio troubleshooting
- Audio troubleshooting using phoenix
- Check microphone using "Hp microphone in Ext speaker out" loop
- Check earpiece using "Ext microphone in Hp speaker out" loop
- Check IHF & ringing tone function using "Buzzer"
- Check vibra function using "Vibra control"
- Earpiece fault
- IHF/ringing tone fault
- Microphone fault
- Headset earpiece fault
- Headset microphone fault
- 4 RF Troubleshooting Instructions
- 5 Camera Module Troubleshooting (Only for RM-394/RM-395)
- 6 System Module
- Glossary
Min operating voltage
Vcoff+ 3. 1V ± 0,1V Off to on
Vcoff- 2. 8V ± 0,1V On to off
HW reset demands
Min 1. 0V d
Max --
a. The nominal voltage is defined as being 15% higher than the lower extreme voltage. TA will test with this
nominal voltage at an 85% range (0.85x3.9V
a
3.3V).
b. This limit is set to be above SW shutdown limit in TA.
c. 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.
d. The minimum battery cell voltage required for the reset circuitry to turn on. This is not confirmed by
measures at pt.
Table 5 Current consumption
Condition Min Typical Max Unit
Call (MoU)
(E)GSM 900
GSM 1800
GSM 1900
219 (RM-394/395);
211 (RH-118)
174 (RM-394/395);
168 (RH-118)
206 (RM-394/395)
mA
Idle (MoU) 1.6 mA
Power off 150 250 mA
RM-394; RM-395; RH-118
General Information
Page 1 –10 COMPANY CONFIDENTIAL Issue 1
Copyright © 2008 Nokia. All rights reserved.