Kirisun DP405 User manual

DP405
V190409 ShenZhen Kirisun Communications Co.,Ltd.
Professional wireless communication system solution supplier
SERVICE MANUAL

DP405 Service Manual
Contents
1.Overview ......................................................................................................................................................1
1.1. Scope.....................................................................................................................................................1
1.2. Safety Precautions.................................................................................................................................1
1.3. Maintenance Service.............................................................................................................................1
2.External View and Operation Description................................................................................................2
2.1. External View.........................................................................................................................................2
2.2. Operation Description............................................................................................................................2
2.3. LED Indication .......................................................................................................................................3
2.4. Basic Operation.....................................................................................................................................4
3.Circuit Description......................................................................................................................................4
3.1. Circuit Composition................................................................................................................................4
3.2. TX Circuit...............................................................................................................................................5
3.3. RX Principle...........................................................................................................................................5
3.4. Power Section........................................................................................................................................6
3.5. IC Description........................................................................................................................................6
3.6. Semiconductor Device Description .......................................................................................................7
3.6.1. MCU Description.................................................................................................................................7
3.6.2. RDA1846S Port Description.............................................................................................................10
3.7. Semiconductor Device Feature Description.........................................................................................11
4.Feature Description and Parameter Setting ..........................................................................................12
4.1. Kill and Remote Monitor......................................................................................................................12
4.2. Scan.....................................................................................................................................................13
4.3. Zone.....................................................................................................................................................13
4.4. Setting..................................................................................................................................................13
4.5. TOT （Time-out-timer）.....................................................................................................................14
4.6. Emergency Alarm ................................................................................................................................14
4.7. Feature Setting....................................................................................................................................15
5.Attaching and Detaching..........................................................................................................................15
5.1. Attaching and Detaching the Battery...................................................................................................15
5.2. Attaching and Detaching theAntenna.................................................................................................16
5.3. Installing the Earphone........................................................................................................................16
5.4. Detaching the Housing from the Chassis (see figure below)..............................................................17
5.5. Detaching the Motherboard from the Chassis (see figure below）....................................................18
5.6. Exploded View.....................................................................................................................................19
6.Modulation and Test.................................................................................................................................21
6.1. Method.................................................................................................................................................21
6.1.1. Components needed for adjustment.................................................................................................21
6.1.2. PC Test Mode Modulation Method:...................................................................................................21
6.2. Radio Test............................................................................................................................................21
7.Main Technical Performance and Specification....................................................................................22
8.Maintenance and Test Equipment...........................................................................................................23
9.Troubleshooting........................................................................................................................................24
Appendix 1 Abbreviations ........................................................................................................................26
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DP405 Service Manual
Appendix 2 Material List（electronic section）........................................................................................27
List 1 DP405－02 Motherboard material list..................................................................................................27
List 2 DP405－01 Motherboard Material List.................................................................................................38
List 3 Module List............................................................................................................................................51
Appendix 3 Material List (Structural Section)...........................................................................................53
Appendix 4 Accessory List..........................................................................................................................57
Appendix 5 Schematic Disagram and Postion Mark................................................................................58
Diagram 1 DP405-02 Motherbaord Schematic Diagram (6PM7-4169-HMB).............................................58
Diagram 2 DP405-02 Motherboard Position Mark (6PM7-4169-HMB).......................................................63
Diagram 3 DP405-01 Motherbaord Schematic Diagram (6PM7-4169-HMB).............................................65
Diagram 4 DP405-01 Motherbaord Postion Mark (6PM7-4169-HMB)........................................................70
Diagram 5 Module Schematic Diagram (6PD7-4038-HL1G)......................................................................72
Diagram 6 Module Postion Mark (6PD7-4038-HL1G).................................................................................78
Appendix 6 Schematic Disagram and Postion Mark................................................................................79
Diagram 1 DP405-02 Motherbaord Schematic Diagram (6PM7-4169-HMF).............................................79
Diagram 2 DP405-02 Motherboard Position Mark (6PM7-4169-HM F)......................................................84
Diagram 3 DP405-01 Motherbaord Schematic Diagram (6PM7-4169-HMF).............................................86
Diagram 4 DP405-01 Motherbaord Postion Mark (6PM7-4169-HMF)........................................................91
Diagram 5 Module Schematic Diagram (6PM7-4320-HBA)........................................................................93
Diagram 6 Module Postion Mark (6PM7-4320-HBA) ..................................................................................99
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DP405 Service Manual
1.Overview
1.1.Scope
This manual is intended for maintenance and repair of DP405 portable radio, and can only be used by
engineers and professional technicians who are trained by Kirisun. The parameters in this manual may vary
with technology improvement, so for updated technical information, please contact Kirisun or its local
dealers.
Please carefully read this manual before repairing the radio.
1.2.Safety Precautions
Electromagnetic Radiation
Radios generate and radiate electromagnetic energy. The security design of Kirisun radio meets national
and international standards on electromagnetic radiation. To ensure radio’s optimal performance and safe
electromagnetic radiation on human, please keep the radio vertical to the ground and 2-5 cms away from
your mouth.
Electromagnetic Interference
To avoid electromagnetic interference, please turn off the radio wherever there are clear warnings, e.g.
hospitals, health care centers, airports and other places where radios must be turned off.
Explosive and Harmful Gases
The radio should be turned off in areas where there are explosives and harmful gases, e.g. lower deck of
the hull, fuel and chemical storage facilities and area where the air contains chemicals, particles, dust or
metal dust.
Please turn off the radio when close to blasting area and electric blasting detonators.
Replacing or charging batteries in potentially explosive atmosphere is prohibited.
Antenna Damage
Do not use radios when the antenna is damaged. Damaged antenna may cause mild burning to human
skin.
Replacing Components
When replacing components, please be aware of the model number. Do not arbitrarily replace any
components that do not match Kirisun’s requirement.
1.3.Maintenance Service
The radio and accessory are provided with warranty service. But if one of the following occurs, no free
maintenance is offered.
No valid warranty card or original invoice.
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DP405 Service Manual
Faults caused by unauthorized disassembly, repair and modification.
Man-made damage such as wear, mechanical damage, burning, and waterlogging.
Product serial number is damaged or the product brand is unable to identify.
After the warranty expired, lifetime service is still available. We also provide service components to service
station and staff at favorable price.
2.External View and Operation Description
2.1. External View
No. Part Name No. Part Name
1 Mic Jack 2 Model Sticker
3 Antenna 4 Channel Knob
5 Volume Knob 6 Guide Beam
7 Logo Sticker 8 Mic
9 Speaker 10 PTT Key
11 Programmable Key 12 Belt Clip
13 Battery 14 Battery Clip
2.2. Operation Description
The programmable keys can be set as long press feature key or short press feature key according to user’s
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DP405 Service Manual
requirements. The available features are listed below:
No. Feature Usage
1 None No feature
2 High/low Power Press this key to switch high/low power.
3 Broadcast Call Press this key to make a broadcast call.
4 Monitor
If there is CTCSS on the current analogue channel, press this key to
switch to carrier squelch mode to cancel CTCSS feature. When the
carrier is matched, the voice can be output. Press the key again to
go back to the original status.
5 EmergencyAlarm Enable the emergency alarm feature to seek help in emergency.
6 Eemrgency Alarm Exit End emergency alarm.
7 Squelch on/off P
ress this key on the analogue channel to forcibly open the voice
reception path and receive weak signals on the analogue
channel. Pressing this key on digital channel is useless.
8 Zone Selection Press this key to switch to the next zone.
9 Scan
Press this key to enable Scan and listen to activities on other
channels; press it again to disable Scan.
10 Alert Tone on/off
Press this key to enabel all the alert tones and press it again to have
them disabled.
11 Niusance Delete Durng scan, when the radio detects an unnecessary channel, e.g. interference channel, the user can select Nuisance Delete menu to
delete the channel before the scan continues.
12 Repeater/Talkaround On the repeater channel, press this key to exit repeater mode.
2.3.LED Indication
LED Indication Radio Status
Red LED glows The radio is transmitting
Red LED flashes The radio is in low power.
Green LED Glows The radio is receiving signals (voice, data) or detects activity on
channel
Green LED flashes The radio is scanning
Orange LED flashes The radio is in call hang status or receiving emergency alarm.
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DP405 Service Manual
2.4.Basic Operation
Power on/off the Radio
When the radio is off, turn the volume knob clockwise until a click is heard to power on the radio; when the
radio is on, turn the volume knob counter-clockwise until a click is heard to power off the radio.
Selecting the Channel
Turn the channel knob to select the channel.
Adjusting the Volume
Turn the volume knob to adjust the volume.
Initiaing a Call
Press PTT key and speak to the mic.
Receiving
When the radio receives the signal which matches the current channel, it will output the voice on channel.
3.Circuit Description
3.1.Circuit Composition
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DP405 Service Manual
3.2.TX Circuit
The TX circuit is mainly composed of three parts below:
RF PowerAmplification Circuit
RDA1846S outputs RF signal from pin 18 and enters first-level pre-drive amplifier (Q502) for initial
amplification; then it enters second-level pre-drive amplifier （Q503）and drive amplifier (Q501) for further
power amplification, ensuring sufficient drive power signal can be offered to final amplifier for ultimate
power amplification; after amplification by multiple amplifiers, the transmitted signal will complete the output
impedance match at the output terminal of final power amplifier through a section of microstripe, so as to
minimize output power loss from impedance match failure; afterwards, the transmitted signal will enter the
low pass filter through TX/RX switch.
Low Pass Filter Circuit
The low pass filter which suppresses harmonic wave is an advanced Chebyshev filter composed of lumped
parameter inductor and capacitor. On a certain basis of in-band fluctuation, the filter can improve
suppression to out-of-band harmonic wave and spurious signal.
Automatic Power Control Circuit (APC)
In the automatic power control circuit, the drain current from drive power amplifier and final power amplifier
completes switch from current to voltage through the sampling resistor and subtraction circuit which is
made of the first operational amplifier; the voltage will be compared with the APC control voltage output
from DAC at the second operational amplifier, and the error voltage that is output will change the
transmitting power through the grid bias voltage of the control power amplifier tube (including the drive level
and final level ).
3.3.RX Principle
The RX circuit is mainly composed of RF low pass filter, RX/TX switch, low noise amplifier, RDA1846S,
LT1901 and audio power amplifier.
RX Circuit Front-end
The signal from antenna is sent to Q507 3SK318 and low noise amplifier (LNA) which is made of peripheral
components though RX/TX switch for amplification, and the amplified signal will then be sent to U500
（RDA1846S）for demodulation and output.
RX Circuit Back-end
The analogue/digital signal which is demodulated and output by RDA1846S, after completing demodulation
and processing of digital signal through DSP in LT1901, will be input to digital audio processor module for
further processing, and then be switched to analogue voice signal through DAC of codec; the analogue
voice signal will finally be amplified by external audio amplifier to drive the speaker.
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DP405 Service Manual
3.4.Power Section
The radio applies 7.4V lithium-ion battery for power supply. RF power amplification and audio power
amplification are directly powered by battery; the battery outputs 3.6V to supply power to PMU in
RDA1846S and LT1901 through DC-DC switch; 3M, 3C and USB3.3V output from PMU separately
supply power to other baseband circuits; the battery outputs 5V voltage through LDO and then outputs
separate 5T and 5R after control by Q100 and Q102.
RF PA：RF PowerAmplifier Circuit Q500（RD07MUS2B）, Q501（RD01MUS2）
Audio PA: Audio Power Amplifier Circuit U3（TDA8547TS）
3M：EEPROM IC200（AT24C512C）, encrypted IC U2（LTJMIC）
3C：Transistor X500（12.8M TCXO）
5T：RF Pre-driveAmplifer Circuit Q502 （2SC5108）、 Q503（2SC3356）
5R：Low Noise High FrequencyAmplifier Circuit Q507（3SK318）
DC-DC：PMU IC1（LT1901）、 U500（RDA1846S）
3.5.IC Description
RDA1846S Feature:
Fully-integrated CMOS RF Front-end
High Linearity Low NoiseAmplifer and Mixer
Low IF Receiver Path
Auomatic DC offset Calibration Circuit
High Performance analogue/digital converter and digital/analogue converter
Fully-integrated Receiver Filter
Digital AGC
Modulation and demodulation technique based on digital signal processing technique
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DP405 Service Manual
TX Path of Direct Frequency Synthesis
Modulation Method of Direct Frequency Synthesis
TX Filter based on Digital Signal Processing Technique
TX Modulation Gain Number is Adjustable
Digital voice activates TX control
High-performance Fractional PLL Frequency Synthesizer
Fully-integrated In-chip RF VCO
Fully-integrated Internal Loop Filter
Low Phase Noise
Fast Lock of Phase
High-frequency Resolution with Random FrequencyAdjustable
Built-in Transistor Frequency Error Calibration Circuit
Sleep Mode of Ultra Low Loss
Three Wire Serial Digital Interface Control
3.6.Semiconductor Device Description
3.6.1. MCU Description
Pin No. Port No. Port Name Definition
E11 GPIO_D44 JM_RST Encrypted IC Reset
J19 BSENS MAND_IN Upside down IC level input
L22 ADC_IN BAT_DET Battery power check
W13 GPIO_D7 PF Side key input
R14 GPIO_D6 BEEP_C Received voice\alert tone switch control
W14 GPIO_D101 EERROM_WP EEPROM
AA17 GPIO_D24 ECN_3 Channel switch
AB17 GPIO_D23 ECN_2 Channel switch
V15 GPIO_D11 KEYPAD5 4*4 key
V16 GPIO_D99 KEYPAD3 4*4 key
V17 GPIO_D100 MAND_C Upside down IC power supply control
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