This document is the service manual for Nokia 1661 RH-121/RH-122 mobile phone, describing the features and characteristics of the phone.
This Service Manual provides Level 1 and Level 2 service technicians with detailed instructions for repairing, maintaining, and testing the Nokia 1661 RH-121/RH-122 handset. It includes safety warnings, ESD protection requirements, battery handling, disassembly and assembly steps, and a parts list.
Key sections cover the phone’s transceiver characteristics, display specifications, operating system, supported network bands, battery information, and recommended care and maintenance practices. The manual also contains exploded view diagrams and torque specifications for re‑assembly.
| Network Bands | EGSM 900/1800, GSM 850/1900 |
|---|---|
| Display Resolution | 128 x 160 |
| Display Colors | 65 000 color TFT |
| Operating System | Series 30 |
| Connections | AC‑3 charger, AC‑6C USB charger, 2.5 mm AV connector |
| Battery Capacity | 860 mAh (BL‑4C) |
It supports EGSM 900/1800 and GSM 850/1900 bands.
The phone uses the Series 30 operating system.
Care must be taken on installation in vehicles with electronic engine management and anti‑skid braking systems because RF energy may affect their operation.