Kirisun PT4208, Service Manual

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PT4208 Service Manual
2
Chapter 1 Overview
1.1 Introduction
This manual applies to the service and maintenance of
PT4208 series portable radios, and is intended for use by
engineers and professional technicians that have been trained
by Kirisun. It contains all required service information for
the equipment. Kirisun reserves the right to modify the
product structure and specifications without notice in order
to enhance product performance and quality. You can also
log on our website www.kirisun.com to download the latest
service manual or contact your local dealer or us.
Please read this manual before repairing the product.
1.2 Service Attentions
* Safety
Do not contact the antenna connector or PCB with your
skin directly.
Do not reverse the battery polarity.
It may cause harm to the radio if signal input on the
antenna connector is larger than 20 dBm (100mW).
Do not turn on the radio before the antenna and load
connection is completed.
If the antenna has been damaged, do not use the radio.
Damaged antenna may cause light burning on skin.
* Explosive Atmosphere
It’s prohibited to use or repair the radio in the following
places:
Hospital, health center, and airport.
Any area with a potentially explosive atmosphere (e.g.
orlop deck of the ship, storage and transportation equipment
for fuel and chemical etc.)
Any place near blasting sites or area with electrical
blasting cap.
* Replacement Parts
All components used for repair should be supplied by
Kirisun.
Components of the same type available on the market are
not surely able to be used in this product and we do not
guarantee the quality of the product using such components.
If you want to apply for any component from Kirisun,
please fill in an application form as below.
e.g.
Component Application Form
Radio Model Component
Position
Mark
Model/
Specifications
Parts No. Qty
PT4208-02 FET Q3 RD01MUS1 105-RD01MU-R01 1
PT4208-02 Triode Q49 2SC5108 （ Y ） 104-SC5108-001 1
1.3 Service
All the Kirisun products are subject to the service
warranty.
After-sales service will be provided, and the length of
warranty is stated by Kirisun. The radio and its accessories
are all in the warranty. However, in one of the following
cases, charge free service will not be available.
* No valid warranty card or original invoice.
* Malfunction caused by disassembling, repairing or
restructuring the radio by users without permission.
* Wear and tear or any man-made damage such as
mechanical damage, burning or water leaking.
* Product’s serial number has been damaged or the
product trademark is difficult to identify.
After the warranty expires, lifetime service is still
available. We also provide service components to service
stations and staffs.
Chapter 2 External View and Functional
Keys
2.1 External View
See Figure 1.
Figure 1
2.2 Functional Keys
1. LED Indicator
Lights red while transmitting; lights green while