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Contents

1. Introduction ........................................................................................................................................1
2. Product Controls ................................................................................................................................2
3. Software Specifications .....................................................................................................................5
4. Circuit Description .............................................................................................................................9
5. CPU Pins ...........................................................................................................................................16
6. Parts List 1 ........................................................................................................................................19
7. Tuning Description ...........................................................................................................................28
8. Troubleshooting Flow Chart ............................................................................................................38
9. Disassembly and Assembly ............................................................................................................41
10. Exploded View ................................................................................................................................45
11. Parts List 2 ......................................................................................................................................46
12. Packing Guide ................................................................................................................................49
13. PCB View.........................................................................................................................................50
14. Level Diagram .................................................................................................................................52
15. Block Diagram ................................................................................................................................53
16. Schematic Diagram ........................................................................................................................54
17. Specifications .................................................................................................................................57
Copyright Information
HYT is the trademark or registered trademark of Hytera Communications Co., Ltd. (the Company) in
PRC and/or other countries or areas. The Company retains the ownership of its trademarks and product
names. All other trademarks and/or product names that may be used in this manual are properties of
their respective owners.

The product describes in this manual may include the Company's computer programs stored in memory
or other media. Laws in PRC and/or other countries or areas protect the exclusive rights of the Company
with respect to its computer programs. The purchase of this product shall not be deemed to grant, either
directly or by implication, any rights to the purchaser regarding the Company's computer programs. Any
of the Company's computer programs may not be copied, modified, distributed, decompiled, or
reverse-engineered in any manner without the prior written consent of the Company.



Disclaimer
The Company endeavors to achieve the accuracy and completeness of this manual, but no warranty of
accuracy or reliability is given. All the specifications and designs are subject to change without notice
due to continuous technology development. No part of this manual may be copied, modified, translated,
or distributed in any manner without the express written permission of us.

If you have any suggestions or would like to learn more details, please visit our website at:
http://www.hytera.com.
Service Manual Introduction



1. Introduction
Intended User
This manual is intended for use by qualified technicians only.




1
Product Controls Service Manual



2. Product Controls



2 3 4
1




12
8
5 9
11
6
7


10
13


(4) Power
(3) Channel
(1) Antenna (2) LED Indicator On-Off/Volume Control
Selector Knob
Knob

(5) PTT Key (6) MONI Key (7) Microphone (8) Speaker

(9) Accessory Jack (10) Battery (11) Belt Clip (12) Battery Latch

(13) Charging Piece / / /



PTT (Push-to-Talk) Key

Hold the PTT key to transmit, and release it to receive.

SK1 Key

Side Key 1 is a programmable key that can be assigned with long press function and short press
function by your dealer.

Functions below are programmed by factory default:




2
Service Manual Product Controls


Key Operation Description

Short press Squelch Off
SK1 Key
Long press VOX

Channel Selector Knob

Rotate the knob to select your desired channel.

Power On-Off/Volume Control Knob

Rotate the knob to turn the radio on/off or to adjust the volume.

LED Indicator

See the table below for LED and alert tone indications:

Item Indication

To enter Wired Clone Mode:

Source radio: turn it on with MONI key The LED on the source radio flashes red once during
held for approximately 2 seconds; the power-on process.

Target radio: turn it on directly.

The LED glows red during cloning process.

Error occurs during cloning:

Clone Mode: At the start of cloning, frequency
band and Model ID will be checked. The LED
Status of the source radio in Wired
glows orange for 2 seconds and then goes out to
Clone Mode
Wired- indicate a failed check. If the check is
(After the target radio is turned on and
Clone successfully carried out but error occurs during
the cloning cable is connected, press
cloning, the LED will flash orange. In this
the PTT key of the source radio to
situation, press any key to make it go out.
begin cloning.)
Factory Clone Mode: The LED flashes orange in
presence of error. Press any key to make it go
out.

The LED glows green once cloning is completed.

The LED glows green during cloning.
Status of the target radio in Wired
The green LED goes out after cloning is
Clone Mode
completed.


3
Product Controls Service Manual


Item Indication

When the radio is turned on, a power-on alert tone
sounds.
Power On (to enter User Mode)
When the radio is currently on a blank channel, it
sounds beep tones continuously.

The LED flashes red, and the low-pitched tone
Low Battery Alert sounds every 20 seconds (programmable by the
dealer).

The LED glows red during transmitting.

When TOT timer expires, the radio sounds beep
Transmitting tone continuously.

A TOT pre-alert tone sounds before the TOT timer
expires.

Receiving The LED glows green during receiving.

The LED flashes green once per second during
scanning.

Scan Start Alert (programmable by the dealer):
Scanning
one beep will sound.

Scan End Alert (programmable by the dealer):
two continuous beeps will sound.

The LED glows red when the PC is reading data
from the radio.
Writing/Reading
The LED glows green when the PC is writing
data into the radio.

A low-pitched tone sounds when the radio
switches from high power to low power.
Power Adjustment
A high-pitched tone sounds when the radio
switches from low power to high power.

One audio alert for enabling;
VOX/Channel Lock
Two audio alerts for disabling;


4
Service Manual Software Specifications




3. Software Specifications
3.1 Function List
Channel Capacity: 1