RCA BR200D-U1 User manual

BR200D-U1/BR300D-U1 Service Manual
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BR200D-U1
BR300D-U1
Service Manual

BR200D-U1/BR300D-U1 Service Manual
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Contents
Chapter 1 General
Chapter 2 Radio Overview
Chapter 3 Mode Introduction
Chapter 4 Disassembly For Repair
Chapter 5 Circuit Description
Chapter 6 PCB Layout
Chapter 7 Adjustment
Chapter 8 Bill Of Materials
Chapter 9 Charger
Chapter 10 Block and Schematic
Appendix 1 Abbreviations
Appendix 2 Main Technical Indexes
Appendix 3 Trouble Shooting

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Chapter 1 General
1.1Introduction
This manual applies to the service and maintenance of DR6000-2 and DR7000-2 radios,
and is for the engineers and professional technicians that have been trained by our
company. In this manual you can find all the information of product service. Our company
reserve the rights to modify the product construction and specification without notice in
order to enhance product performance and quality.
Read this manual before repairing the product.
1.2 Attention
Safety
Do not touch the antenna connector with your skin directly. .
Do not reverse the power polarities.
Do not turn on the radio before the antenna and load connection is completed.
Do not contact the damaged antenna when transmitting, or may make lightly burning on the
skin.
Electromagnetism Interference
It’s prohibited to use or repair the radio in the following places:
Hospital, health center, air port
Any area with a potentially explosive atmosphere (e.g. fuel and chemical storage and
transport devices etc.)
Any area of dynamite or exploder.
Change Components
All the components used in repair service should be supplied by our company.
Other components of the same models available on the market are not surely able to use in
this product and we do not guarantee the quality of the product using such components.
1.3 Service
All the our company products are subject to the service warranty.
After-sales service will be provided, and the length of warranty is stated by our company.
The radio and its accessories are all in the warranty. However, in one of the following cases,
charge free service will be not available.
No valid service warranty or original invoice.

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Malfunction caused by disassemble, repair or reconstruct the radio by the users without
permission.
Wear and tear or any man-made sabotage such as mechanical damage, burning or water
leaking.
Product serial number has been damage or the product trademark is difficult to identify.
Beyond the warranty time, lifetime service is still available with paid. And we also provide
service components to service stations and staff.

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Chapter 2 Radio Overview
a. DR6000-2
1. PTT ( PUSH-TO-TALK) Button
To make a call, press and hold the PTT button, then speak into the microphone in
normal voice. Release the PTT button to receive signals.
2. Side Button 1 (Programmable Button)
3. Side Button 2(Programmable Button)
4. Top Button (Programmable Button)
5. Channel Selector
Rotate to select channel 1~16.
6. Power/Volume Knob
Turn clockwise to switch on the radio.
Turn counterclockwise till a click is heard to switch off the radio.
Rotate to adjust the volume after turning on the radio.
7. LED Indicator
LED Indicates Status/Alert. Green LED lights when a carrier is detected in the current
channel. Red LED lights during transmission. Orange LED flashes when receiving the
Radio ID 5-Tone signaling or 2-Tone signaling or MDC signaling. Green LED flashes
when scanning. Red LED flashes when low battery.
8. Speaker/Microphone Jacks
Used to connect the optional speaker/microphone.
9. MIC Input
Please keep your mouth about 10 cm (3-4 inches) away from the microphone input
to achieve the best voice quality. If the distance is too far or too close to the radio, it

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will affect the voice quality.
Programmable Button Function
The dealer can program the Side Button 1, Side Button 2 and the Top Button with the
following Optional functions:
None (No Function)
Annunciation Selection
Talkaround
Call1/Call2/Call3/Call4
Lone Work
Emergency Call
Cancel Emergency Call
Man-Down
Scan
Noise Channel Delete
Call Forward
H/M/L Power Switch
Squelch Adjust
Monitor Momentary/Call Cancel
Monitor/Call Cancel
Squelch Off Momentary/Call Cancel
Squelch Off/Call Cancel
Lock Keyboard
Battery Check
FCS
Normal Record/Record Stop
Protected Record/Record Stop
Record play/Play Next/Play Stop
Record Delete
Surveillance
… …

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b. DR7000-2
10.PTT ( PUSH-TO-TALK) Button
To make a call, press and hold the PTT button, then speak into the microphone
in normal voice. Release the PTT button to receive signals.
11.Side Button 1 (Programmable Button)
12.Side Button 2(Programmable Button)
13.MIC Input
Please keep your mouth about 10 cm (3-4 inches) away from the microphone input
to achieve the best voice quality. If the distance is too far or too close to the radio, it
will affect the voice quality.
14.LCD
15.Key Pad
16.Top Button (Programmable Button)
17.Channel Selector
Rotate to select channel 1~512.
18.Power/Volume Knob
Turn clockwise to switch on the radio.
Turn counterclockwise till a click is heard to switch off the radio.
Rotate to adjust the volume after turning on the radio.
19.LED Indicator
LED Indicator Status/Alert. Green LED lights when a carrier is detected in the

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current channel. Red LED lights during transmission. Flashes orange when
receiving 5-Tone signaling or 2-Tone signaling . Green LED flashes when scanning
or Red LED flashes when low battery.
20.Speaker/Microphone Jacks
Used to connect the optional speaker/microphone.
Programmable Button Function
The dealer can program the Side Button 1, Side Button 2, Top Button and ‘C’, ‘<’, ’>’ ,’O’
Keys with the following Optional functions:
None (No Function)
Channel Up
Channel Down
Zone Up
Zone Down
Display CH Frequency
Display CH Alias
Display Mode Switch
OST
H/M/L Power Switch
Squelch Adjust
Lock Keyboard
Scan
Noise Channel Delete
Voice Expander
Scrambler
Home Channel
Talk Around
VOX
Monitor Momentary/Call Cancel
Monitor/Call Cancel
Squelch Off Momentary/Call Cancel
Squelch Off/Call Cancel
Emergency Call (Only for TOP key)
Cancel Emergency Call (Only for TOP key)
Radio Call
Call1/Call2/Call3/Call4
Menu Select/Enter (Only for ‘O’ key)
Lone Work
Scan List Edit
GPS Information Display
VOX Level
Back Light

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GPS Auto TX
Zone0 Scan ADD/DEL
Man-Down
Normal Record/Record Stop
Protected Record/Record Stop
Record play/Play Next/Play Stop
Record Delete
Surveillance
… …

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Chapter 3 Mode Introduction
Mode combinations
Mode Function How to access
Normal User
Mode For normal use Power on
User
Mode Field
Programming
Mode
Programming the basic
information of the radio
Menu or Programmable
Key
Data
Programming
Mode
Reading and writing
frequency data and other
functions
Receive instructions from
the PC
Test Mode Used to tune the radio
using the PC.
Receive instructions from
the PC
PC
Mode
Firmware
Upgrading
Mode
Upgrades the software
when new features are
added
Receive instructions from
the PC
Normal User Mode：
You can enter Normal User Mode (conventional communication mode) by turning on the
power switch. Users in the mode can use the defined function of the radio.
Field Programming Mode：
You can enter the Field Programming Mode by pressing the “Menu” Key or a programmable
key to enter this mode.
Data programming mode:
Before leaving the factory, the radio has been set in factory. However, due to different
requirements of users, functional parameters of the radio such as working frequency,
channels, CTCSS/DCS and auto scanning, etc. should be set again. Therefore, the
company has specially designed a set of DR-6000 programming software with friendly
interface, convenient operation and visualized display for setting functional parameters of
the radio.
Steps for setting the functional parameters of the Radio by computer are as follows:

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1. Install DR-6000 programming software on the computer.
2. As shown in the figure below, connect the radio to the computer through a special serial
or USB programming cable.
Figure 3-1
3. Turn on the power of the computer.
4. Turn on the power of the Radio.
5. Click on DR-6000 icon to perform the program.
6. In the main menu of the programming software, click on [Read] to read the parameters
of the radio into the computer; click on [Write] to write the parameters set in the
computer into the radio.
Caution:
1. Before editing for the first time, the data should be read from the Radio and properly
backed up.
2. If the edited data cannot work normally after being written into the Radio, please open
the backup data and rewrite them.
3. “Model Information” is the important information of the Radio and should not be altered.
Test Mode
According to Figure 3-1, connect the radio to the computer with the special programming
cable.
Warning: Before entering the Test Mode, please first connect a high-frequency load of 50
ohm to the antenna port of the radio or connect the radio a certain test instrument.
With the DR-6000 Programming Software, you can enter the adjustment status in
Computer Test Mode to adjust the following parameters of the radio:
（1）Frequency stability
（2）RF transmitting high power
（3）RF transmitting Middle power
（4）RF transmitting Low power
（5）Maximum TX voice deviation
（6）VOX1(Tight)
（7）VOX10
（8）2/5 tone deviation
（9）DTMF deviation
（10）MSK deviation
（11）DCS/LTR balance
（12）DCS deviation
Computer
(RS232 serial port
/USB port
)
Radio
(Earphone /Program port)
Programming
cable

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（13）CTCSS(67.0Hz) deviation
（14）CTCSS(254.1Hz) deviation
（15）Battery warning level
（16）RX Sensitivity
（17）RX squelch 9 open level
（18）RX squelch 9 close level
（19）RX squelch 1 open level
（20）RX squelch 1 close level
（21）RSSI(-120dBm)
（22）RSSI(-70dBm)
（23）TX Low Voltage
Firmware Upgrading Mode
The radio is equipped with an internal FLASH ROM, it can be upgraded if required.
1. Connect the radio to the PC with a proper programming cable, then power on the radio.
2. Run computer programming software.
3. Select the right “com port” and suitable Baud Rate you connected and the upgrading
firmware and then click on “E.P” to start downloading.
4. Turn off the radio and exit the programming software.

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Chapter 4 Disassembly For Repair
The radio is a kind of sophisticated communication equipment with small and fine
mechanical structure. You should assemble and disassemble it carefully during the
maintenance process. The Instruction for assembly and disassembly are as follows:
Installing/Removing the Battery Pack
To install the battery, please place it into the groove on the top of the radio chassis about
5mm away from latch.
If the radio has the belt clip installed, you will have to press one side of the clip, to raise it
and slide the battery in proper position.
Press the battery with your fingers and push the battery until you hear a latch click, the
battery is now installed.
Removing the battery pack：
If you want to remove the battery from the radio, first press the battery latch located on the
bottom of the radio, and then press down to slide the battery about 5mm to release the
latch.
Notice:
*Do not short-circuit the battery terminals or dispose the battery in fire.

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* Do not disassemble the battery case.
Installing/Removing Antenna, Channel Selector, Power/Volume Knob
Screw the antenna out of the connector at the top of the radio by holding the bottom of the
antenna and turn it counter clockwise until apart.
Using a smooth tool or a tool protected with cloth to hold or prize up form the bottom of
channel selector or volume knob until apart.
Install external speaker/MIC
Open the cover of the jack for external speaker/MIC, and then insert the plug of the external
speaker or microphone into the jack on the radio. When inserting the accessory plug, make
sure it is properly aligned ( straight) to avoid internal damage to the connector in the radio.
Installing/Removing the Belt Clip

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Use the 2 screws (M2.5x8.0) supplied with the radio and fix these screws on the holes in
the radio clip and into the holes in the aluminum case. If you want to remove the clip from
the radio, just unscrew them, and remove the clip, you can put the screws back to make
sure you do not loose them.
Installing/Removing the Chassis, PCB
1．Remove the antenna, channel selector and power/volume knob.
2．Screw off the two screws at the bottom of the radio by a hexagon screwdriver.
3．Pry up the aluminum shell by peaking a straight screwdriver in the cross-slot at the

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bottom of the aluminum shell, and then pull out the surface shell after placing the
aluminum shell inclined to the back；but please be careful not to snap off the cable of the
speaker.
4．Screw off the 4 screws M2X3 on the keyboard PCB by a cross screwdriver and take out
the FPC from the socket ,then screw the 5 especially screws M2X3 from main PCB.
5．Screw off the 6 screws on the PCB by a cross screwdriver.
6．Unsolder the endpoints of the antenna , PTT key board and speaker by an electric iron,
then remove the main board.
After the disassembly above, you can carry out corresponding reparation and debugging
according to the actual malfunction.

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Exploded View of the Parts

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DR6000-2
No. Parts No. Description Qty.
1 301250607001X Machine screw M2.5X6.0 PB(+) black Ni-plate 2
2 2010CU600005X Radio top cover black 1
3 2030CU600003X SMA RF socket standard 1
4 301070500001X Encoder screw M7X0.75 special shape brass 1
5 2020CU600006X RF socket washer 60A 50% high spring silicon 1
6 2020CU600007X Knob washer 60A 50% high spring silicon 1
7 301060400001X Volume screw M6X0.75 special shape brass 1
8 2020CU600005X Power socket washer 60A 50% high spring silicon 1
9 2040CU600002X PTT metal dome plate 1
10 6020600100201 KEYBOARD PCB 1
11 2010CU600004X Ear phone cabinet PC+ABS 2950 1
12 1211401601001 SPEAKER 1
13 2020CU600001X PTT silicon key block 60A 50% high spring silicon 1
14 7100600240471 CU600-2 antenna 1

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15 2010CU600007X Encoder knob black ABS 700 1
16 2010CU600006X Volume knob black ABS 700 1
17 2020CU600003X Alarm silicon key orange 60A 50% high spring silicon 1
18 2010CU600010X Light-guider clear PC 1
19 4010CU600E01X LOGO LABEL 1
20 2010CU600008X Ear phone cover black TPU 1
21 2010CU600001X Radio front cabinet black PC+ABS 2950 1
22 2030CU600004X Spring Φ2.3X10.5 Φ0.25 spring steel Ni-plate 2
23 2040CU600003X Φ36mm air filter nylon weave 1
24 2010CU600009X Battery locker black PC+ABS 2950 1
25 2040CU600004X 7mm mic air filter Φ7.0X4.5X0.2 1
26 2020CU600004X Mic waterproof washer 60A 50% high spring silicon 1
27 2010DR600002X PTT plastic key blue PC+ABS 2950 1
28 301200407001X Machine screw M2.0X4.0 PB(+) Ni-plate nylok blue patch 13
29 MAIN PCB 1
30 2020CU600002X Cabinet waterproof ring orange 40A 50% high spring silicon 1
31 2030CU600001X AL cabinet polishing ADC 12 1
32 301200807001X Machine screw M2.0X8.0 six lobe pan Ni-plate nylok blue
patch 2
33 70600CB01001 Battery CB-01 (OR CB-02 70600CB02001) 1
34 7110CLP01001 CLP-01 clip 1
35 4010CLP01E01X Clip label 1

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DR7000-2