Abell A-82 User manual

ABELL A-82 UHF Service Manual
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ABELL INDUSTRIES CO. LTD
A-82
SERVICE MANUAL
V．1.0
Web: www.abell.co .cn
E ail: [e-mail] .cn
TEL: [phone]
FAX: [phone]
ADD: 2F,14BLDG, Zhongxing
Industries city, NanShan, Shenzhen, China

ABELL A-82 UHF Service Manual
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ABELL Industries Co., Ltd
A-82 UH SERVICE MANUAL
V1.0
Contents
GENERAL……………………………………………………………………………2
REALIGNMENT……………………………………………………………………..3
DISASSEMBLY OR REPAIR……………………………………………………..8
CIRCUIT DESCRIPTION……………………………………………………………10
Components LIST……………………………………………………………………11
EXPLODED VIEW…………………………………………………………………..38
PACKING…………………………………………………………………………….39
ADJUSTMENT………………………………………………………………………40
ELECTRONIC CIRCUIT DESCRIPTION
…………………………………………………………………46
SCHEMATIC DIAGRAM……………………………………………………………47
PC BOARD VIEWS…………………………………………………………………55
SPECI ICATIONS …………………………………………………………………. 57

ABELL A-82 UHF Service Manual
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GENERAL
INTRODUCTION
SCOPE OF THIS MANUAL
This anual is intended for use by experienced technicians fa iliar with si ilar types of co ercial
grade co unications equip ent. It contains all required service infor ation for the equip ent and is
current as of the publication data. Changes which ay occur after publication are covered by either
Service Bulletins or Manual Revisions. These are issued as required.
ORDERING REPLACEMENT PARTS
When ordering replace ent parts or equip ent infor ation, the full part identification nu ber should be
included. This applies to all parts: co ponents, kits, or chassis. If the part nu ber is not known, include
the chassis or kit nu ber of which it is a part, and a sufficient description of the required co ponent for
proper identification.
PERSONAL SAFETY
The following precautions are reco ended for personal safety：
·DO NOT trans it until all RF connectors are verified secure and any open connectors are properly
ter inated.
·SHUT OFF and DO NOT operate this equip ent near electrical blasting caps or in an explosive
at osphere.
·This equip ent should be serviced by a qualified technician only.
SERVICE
This radio is designed for easy servicing. Refer to the sche atic diagra s, printed circuit board views,
and align ent procedures contained within.

ABELL A-82 UHF Service Manual
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REALIGNMENT
1 Mode
MODE FUNCTION
User Mode Use this ode for nor al operation
PC Mode
Use this ode, to ake various settings by
eans of the FPU through the RS-
232C
port.
Manufacture Mode
Use this ode, to realign the various settings
through the RS-
232C port during
anufacture work
2 How to enter each mode
MODE PROCEDURE
User Mode Power ON
PC Mode
Connect to the IBM PC co patible achine
and controlled by the FPU
3 Parts Introduction
Chart 1
User Mode PC Mode Manufacture Mode

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 PTT(Push-To-Talk)switch
Press this switch, then speak into the icrophone to call a station. Release the switch to receive.
Function Key（K1）
This key is progra able, long key(Pressing ti e up to the pre-set) and short key(nor al pressing
ti e) can be progra ed to enable different function
Long key can be progra ed to be: Moniter o entary, Moniter, Squelch off o entary, Squelch off,
Channel announce ent, Alar , Alar off, Scan, Battery announce ent, choose none to not use this
key.
Short key can be progra ed to be: Monitor, Squelch off, Channel announce ent, Alar , Alar off,
Scan, Battery announce ent, choose none to not use this key.
Note: If the long key of K1 is set to be Monitor o entary or Squelch off o entary, the short key of
K1 can not set to be the above two function.
Function Key(K2)
This key is progra able, long key(Pressing ti e up to the pre-set) and short key(nor al pressing
ti e) can be progra ed to enable different function.
Long key can be progra ed to be: Moniter o entary, Moniter, Squelch off o entary, Squelch off,
Channel announce ent, Alar , Alar off, Scan, Battery announce ent, choose none to not use this
key.
Short key can be progra ed to be: Monitor, Squelch off, Channel announce ent, Alar , Alar off,
Scan, Battery announce ent, choose none to not use this key.
Note: If the long key of K1 is set to be Monitor o entary or Squelch off o entary, the short key of
K1 can not set to be the above two function.
Channel selector
Rotate to select channels 1-16.
LED indicator
Lights red while trans itting, green while receiving a signal.
 Power switch/Volu e control
Turn clockwise to switch the transceiver ON. Turn counterclockwise until a click sound, to switch the
transceiver OFF. Rotate to adjust the volu e level.
4 unction instruction
Squelch off/Monitor
Function Squelch off is to open the noise li iting circuit forcibly when Signal-to-Noise rate of the signal
doesn’t reach the start level(The squelch function fails), unction Monitor is to open the noise li iting circuit
forcibly when Signal-to-Noise rate of the signal reach the start level but mute code isn’t decoded. Momentary
status is that when press and hold the key, cancel the Squelch and Monitor function, when release the key, back
to normal. Stable status is that switch the squelch and monitor function by press the key.
TOT
Protect the radio by li iting long-ti e trans iting. “Ti e-Out Ti e” is the li itation ti e for trans iting.
“TOT Pre-Alert Ti e” is to set the ti e between the TOT Pre-Alert and TOT li it, “TOT Reset Ti e” is
the Clear Ti e for the TOT ti er, “TOT Rekey Ti e” is the ti e need for trans iting enable after TOT
alerting.
Squelch Level
Adjust the elasticity degree of the squelch.

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Battery Save
Enable or shut down the power save function.
Channel Announce ent
Enable or shut down the channel announce ent function.
VOX Gain, VOX Delay Ti e
Enable or shut down the VOX function, set the sensitivity of VOX, VOX delay ti e is to set the
trans iting delay ti e after the VOX being enable.
High/Low Power
Switch the high or low power.
Beep
Enable or disable the re inding signal for power on.
Language
Choose the language for the announce ent.
Alar / Alar Cancel
Call for help in e ergency, once enable, will have big voice of alar . If enable the re ote alar , the
transcerver will trans it for 3 second.
Scan
Enable or disable the scan function. Before enable scan function, need to choose the channels need
scan, and preset the para eter of scan in the Scan Set area.
Scan ode
Set the control ode of scan
Priority channel: Set the channels need to listen to in priority during the scan process.
Look back ti e: Set the ti e to ruturn to the priority channel for scan
Rx dwell ti e: Set the stay ti e caused by receiving signal.
Tx dwell ti e: Set the stay ti e caused by trans iting signal.
Battery Announce
Report the battery volu n by announce ent.
DTMF
PTT ID Rate: Set the trans itting rate of DTMF code
Pri acy Digit Code: Adding ti e of pri acy digit code
First Digit Delay: Set the delayti e between trans itting start and pri acy DTMF code
sending(Considering syste /decoder starting ti e). Increasing this para eter has the sa e effect
with “pri acy digital” code increase ent.
*/# Tone: increase the trans itting ti e for the “*” and “#” tone. In so e case, the trans itting ti e of
these two codes ust to be longer than nu ber code, this para eter can be used. However, if the
trans itting start with the “*” and “#”, the radio CPU will choose longer one between */# Tone and
Pri acy Digit Code after co parison.
D Button Assign ent: Set the function and delayti e of D button
PTT ID： Set the trans itting ode and encode of PTT ID

ABELL A-82 UHF Service Manual
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PC MODE
Preface
The transceiver is progra ed by using a personal co puter, progra ing interface (provided by
ABELL) and progra ing software. Chart 2 shows how the devices work.
Chart 2
Connection procedure
1）Connect the A-82 to the personal co puter with the interface cable.
2）Operate A-82 prgra ing software.
3）Set the co unication interface
4）Operate the progra ing to the radio
5）When data is trans itting fro the transceiver the red LED lights.
When data is receiving by the transceiver the green LED lights.
Notes:
·The data stored in the personal co puter ust atch the Model Na e when it is written into the
EEPROM. Run the software and connect the transceiver with the personal co puter, and then turn
ON.
·DO NOT press the [PTT] key during data trans ission or reception.

ABELL A-82 UHF Service Manual
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· Progra ing Interface Cable description
(PC progra ing interface cable: Option)
The progra ing interface cable is required to interface the A-82 with the co puter. It has a circuit in
its D-sub connector (9-pin) case that converts the RS-232C logic level to the TTL level. The
progra ing interface cable connects the side panel jacks of the A-82 to the co puter’s RS-232C
serial port.
· Progra ing software description
By installing progra ing software of A-82, users are allowed to progra the transceiver with
progra ing interface cable.
· Progra ing with PC
If data is transferred to the transceiver fro a personal co puter with software provide by ABELL, the
destination data (basic radio infor ation) for each set can be odified. Nor ally, it is not necessary to
odify the destination data because their values are deter ined auto atically when the frequency
range (frequency type) is set.
The values should be odified only if necessary.
Data can be progra ed into the EEPROM in RS-232C for at via the SP MIC plug.

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DISASSEMBLY OR REPAIR
Separating the case assembly from the chassis
1．Re ove the two knobs  and round nut .
2．Re ove the two screws.
3．Expand the right and left sides of the botto of the case asse bly, lift the chassis, and re ove it
for the case asse bly.
Separating the chassis from the unit
1．Re ove the 12 screws .
2．Re ove the solder fro the antenna ter inal  using a soldering iron then lift the unit off.
3．Re ove two waterproof ring
4．Re ove the two antenna connecter
5．Re ove the ain board.

ABELL A-82 UHF Service Manual
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Chart 3
Note：
：：
：Ensure all these points being soldered well after the ain board is asse blied to the chassis
after repairing.

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CIRCUIT DESCRIPTION
1．Frequency configuration
The receiver utilizes double conversion. The first IF is 38.85MHz and the second IF is
450 KHz. The first local oscillator signal is supplied fro the PLL circuit.
The PLL circuit in the trans itter generates the necessary frequencies. The Chart 4 display all these
frequency.
2．Receiver
The receiver is double conversion super heterodyne, designed to operate in the frequency range of
400-440MHz, 430-470MHz.
1） Front-end RF a plifier
An inco ing signal fro the antenna is applied to an RF a plifier (Q301) after passing through a
trans it/receive switch circuit (D301 and D302 are off) and a band pass LC filter. After the signal is
a plified, the signal is filtered through a band pass filter to eli inate unwanted signals before it is
passed to the first ixer（Q300）.
Because of the LC band-pass filter’s insufficient bandwidth, control the capacitance value of variable
capacitance diode(D303-D308) by adjusting the voltage of AFC to reach the bandwidth need, the
voltage of AFC is controlled by CPU. (See the Chart 5)
ANT SW
R
AMP
ANT
MC
38.85MHz
C
450KHz
I SYSTEM
A
AMP
SP
TCXO
12.8MHz
MIC
MIC
AMP
PLL
VCO
RX
TX
TX
AMP
PA
AMP
Chart 4. Circuit Structure
X3
multiply
38.4MHz

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2） First Mixer
The signal fro the RF a plifier is heterodyned with the first local oscillator signal fro the PLL
frequency synthesizer circuit at the first ixer (Q300) to create a 38.85MHz first inter ediate
frequency (1st IF) signal. The first IF signal is then fed through two onolithic crystal filters (XF301) to
further re ove spurious signals.
3） IF AMP
The first IF signal is a plified by Q302, and then enters IC300 (FM processing IC). The signal is
heterodyned again with a second local oscillator signal within IC300 to create a 450 KHz second IF
signal. The second IF signal is then fed through a 450 KHz cera ic filter (CF300) to further eli inate
unwanted signals before it is a plified and FM detected in IC300.
4） AF a plifier
The AF signal fro the IF IC300 is a plified by IC401（C）, then passes through the high-pass filter
IC401（A），IC401（B），and low-pass filter IC401(D), and though R436, C430 re ove e bitter. The
signal passes through AF volu e control circuit and enters the audio power a plifier IC2 , drives the
speaker.
5） Squelch
Part of the AF signal fro IC300 enters IC300 again, and the noise is a plified and rectified by a filter
and an a plifier to produce a DC voltage corresponding to the noise level. The DC signal goes to the
analog port of the icroprocessor(IC1).IC1 deter ines whether to output sounds fro the speaker by
checking whether the input voltage is higher or lower than the preset value.
To output sounds fro the speaker, IC1 sends a high signal to the MUTE and AFCC lines through Q4,
Q5, and Q404 and turns on the audio a plifier.(See the chart 6)
ANT SW
ANT
D301,D302
SP
L310,L312,L314,L315
BP
A C
TUNE
IC1
CPU
Q301
R AMP
L307,L308,L309
BP
Q300
MIXER
1ST LOCAL OSC
(PLL)
X 301
MC
Q302
I AMP
TCXO
IC300
I ,MIX,DET
C 300
X3
MUITLPLY
Q1
R AMP
LP ,HP
IC401
IC2
A PA AMP
Q303
WIDE/NARROW SW
Chart 5. Receiving Circuit
D303,D306,308 D304,D304,D307

ABELL A-82 UHF Service Manual
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SP
I AMP DET
DET IC301
LP
M I IC IC300
A AMP
IC401
LP HP
Q404
SW A PA AMP
IC2
Q4,Q5
SW
Q303
W/N SW
IC301
LP
QT/DQT
IC1
CPU
BUSY
MUTE
A CC
TI
 3 󳵨󳸆󰪳󳵨󰠆󱪪󳍤
W/N
6） Receive signaling
QT/DQT
300Hz and higher audio frequencies of the output signal fro IF IC are cut by IC301. Then, the
signal is input into IC1. IC1 deter ines whether the QT or DQT atches the preset value, and controls
the MUTE, AFCC and the speaker output sounds according to the squelch results.
3．PLL frequency synthesizer
The PLL circuit generates the first local oscillator signal for reception and the RF signal for
trans ission.
1） PLL
The frequency step of the PLL circuit is 5 or 6.25 kHz. A 12.8 MHz reference oscillator signal is divided
at IC100 by a fixed counter to produce the 5 or 6.25 kHz reference frequency. The voltage controlled
oscillator (VCO) output signal is buffer a plified by Q105, then divided in IC100 by a dual- odule
progra able counter. The divided signal is co pared in phase with the 5 or 6.25 kHz reference
signal in the phase co parator in IC100. The output signal fro the phase co parator is filtered
through a low-pass filter and though the VCO to control the oscillator frequency. （See the chart 7）
2） VCO
The operating frequency is generated by Q101 in trans it ode and Q104 in receive ode. The
oscillator frequency is controlled by applying the VCO control voltage, to the varactor diodes (D102
and D103 in receive ode and D100 and D101 in trans it ode). In receive ode, the voltage of
Q104 is provided by closing the Q14. In trans it ode, the voltage of Q101 is provided by opening
Q14 and closing Q13. 【Closing or opening of Q14 is controlled by the high or low level output of
CPU(IC2 Pin 32), in receive ode, CPU(IC2 Pin 32) output high level, in trans it ode, CPU(IC2 Pin
32) output low level】,The outputs fro Q104 and Q101 are a plified by Q102 and sent to the buffer
a plifiers.
Chart 6.
Audio AMP and noise reducing circuit

ABELL A-82 UHF Service Manual
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D100,D101
D102,D103
12.8MHz
PLL DATA
RE OSC
I/M
I/N
PLL IC100
5KHz/6.25KHz
PHASE
COMPARATOR
CHARGE
PUMP
LP
TX VCO
Q101
RX VCO
Q104
BU AMP
Q102
R AMP
Q100
T/R SW
Q13,Q14
 4 󳩶󱱭󱤤󱪪󳍤
3） UNLOCKED DETECOR
If the LOCK pin 14 on IC100 is low electricity level，the detector will be loosed lock and get DC fro
D105 and R127, when CPU(IC1 Pin23) test the low level of PLL(IC100 Pin14), it can not trans it and
ignoring the push-to-talk switch input signal. (See chart 8)
4.Trans itter
1） Trans it audio
The odulation signal fro the icrophone is a plified by IC400(1/2), passes through a pree phasis
circuit, and a plified by the other IC400(1/2) to perfor IDC operation. The signal then passes
through a low-pass filter (splatter filter) (Q400 and Q401) and cuts the frequencies higher than 3kHz.
The resulting signal goes to the VCO through the VCO odulation ter inal for direct FM odulation.
The audio frequency swing is controlled by VR400. (See the Chart 9)
2） QT/DQT encoder
A necessary signal for QT/DQT encoding is generated by IC403 and adjusted by the reference
frequency of PLL. Because reference oscillator can’t adjust the frequency deviation of QT/DQT,
adjusted by divider at VCO side.
IC100
PLL IC
LD
D105
C144
R126
5C
IC1
LOCK
CPU
Chart 8. Unlock testing circuit
Chart 7. VCO circuit

ABELL A-82 UHF Service Manual
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3） Wide/Narrow bandwidth switch
Set the wide/narrow bandwidth of each channel by being enable the wide/narrow switch. Wide
bandwidth(Low level) and narrow bandwidth(High level) signal is outputted fro pin 56 of IC1. When
receive the Wide bandwidth(Low level) signal, Q402 is got through. When receive the narrow
bandwidth(High level) signal, Q402 is cut off. (See Chart 9)
4） DTMF Encode
The data is outputted fro Pin 60 of the icroprocessor IC1, the data go through the CR lowpass filter,
one part of the data input to VCO via IC400, Q400, Q401 to odulate directly, the other part of data is
transfer fro AF-IN through CN10 into audio power AMP(IC2) for driving the speaker. DTMF
frequency deviation is adjusted by the output of CPU(IC1).
VR400
MIC
Q403
SW
MUTR
IC1
QT/DQT
AMP
MIC
IC400(1/2)
PREEMPHASIS IDC
IC400(1/2) (SPLATTER ILTER)
LP
Q400,Q401
DEV
MAX D104,Q101
VCO
X100,IC100
REE ERENCE
OSC
(TCXO)
6 󰅹󳵨󳸆QT/DQT
LP
R38,R35,C6,C9
DTM
5） VCO and RF a plifier
The trans it signal obtained fro the VCO buffer a plifier Q103, is a plified by Q205 and Q204. This
a plified signal is passed to the power a plifier, Q201 and Q200, the RF power is 4W when the
transceiver is set to be high power, and 1.5W for low power.(Refer to Chart 10)
ANT
DET
Q204,Q205
AMP
Q200
DRIVE AMP
Q201
INAL AMP D200
ANT SW LP
ANT SW
D301,D302
RX
TXC
APC
IC201
Q206 SW
Q203
SW
TXC
Q108
SW
TXC
BATIN SW
Q214,Q211
A C
BATIN
ST
TH2
SW
Q215
 7 󲝟󱣼󰤜
Chart 9. Transmit Audio QT/DQT
Chart 0. Auto power control

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6） Antenna converting switch and LPF
Before the RF signal arrive the Antenna ter inal, the signal fro RF a plifier go through a lowpass
filter and trans it/receive converting circuit. Trans it/Receive converting circuit is ade up by D200,
D301 and D302. D200, D301 and D302 are open in the trans it ode, and shut down in the receive
ode.
7） Power Control
Power control circuit, stabilize the trans iting output power by AGC(Auto-control gain cuicuit). Voltage
co paring circuit, IC201(2/2) co pare the voltage obtained fro the final current by the reference
voltage set by icroprocessor. The power control voltage is in direct ratio to the difference value
between the reference voltage and auto-detecting voltage fro IC 201(1/2). The output voltage control
the field-effect tube a plifier, keep the output power constant. Trans it output power can be adjusted
by CPU, change the output power by odify of reference voltage through CPU.
8） Te perature protecting circuit
When the te perature of ther istance is up to 80 , protecting circuit will enable Q209 to protect final 
a plifier Q203 fro overheating.
5．Power supply
The 5V pwer of CPU(5C) is provided by inputing 7.5V to A15, low level output by CPU(IC1 Pin15)
close Q15 to provide 5V power. In nor al work ode, CPU(IC1 Pin33) output high level, contol Q18
provide 5V power for PLC. In trans iting ode, CPU(IC1 Pin34) output high level, control Q18 provide
5V power for TXC, in receiving ode, CPU(IC1 Pin35) output low level, control Q10 provide 5V power
for RXC.
6．Control syste
The IC1 CPU operates at 9.8304MHz

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Component List
Version: 01 A82(D04) A Side BOM
No. Specification Packing Description Qty Part No.
Chip Resistor
1 0R 0402 ±5% 7 R14 R27 R42 R52 R71 R68 R244
2 0.39R 1206 ±5% 3 R236 R237 R238
3 4.7R 0402 ±5% 2 R2 R8
4 10R 0402 ±5% 1 R1
5 100R 0402 ±5% 3 R46 R50 R449
6 220R 0402 ±5% 1 R18
7 330R 0402 ±5% 2 R5 R6
8 390R 0402 ±5% 1 R253
9 470R 0402 ±5% 1 R413
10 820R 0402 ±5% 1 R424
11 1K 0402 ±5% 14
CP6 CP7 CP15 C
P16 CP17 CP18 R11 R12
R49 R56 R72 R73 R74 R75
12 1.2K 0402 ±5% 1 R65
13 1.5K 0402 ±5% 1 R421
14 1.8K 0402 ±5% 1 R414
15 2K 0402 ±5% 1 R420
16 2.2K 0402 ±5% 3 R20 R45 R419
17 3.3K 0402 ±5% 2 R252 R402
18 4.7K 0402 ±5% 11
CP12 CP13 CP14 R21 R23 R44 R47 R51
R53 R443 R67
19 4.7K 0603 ±5% 1 CP11
20 5.6K 0402 ±5% 2 R247 R401
21 6.8K 0402 ±5% 1 R409
22 10K 0402 ±5% 5 R15 R16 R234 R417 R418
23 10K 0603 ±5% 1 R29
24 15K 0402 ±5% 3 R30 R411 R412
25 18K 0402 ±5% 2 R423 R468
26 22K 0402 ±5% 1 R400
27 33K 0402 ±5% 4 R404 R405 R407 R408
28 47K 0402 ±5% 6 R19 R31 R69 R135 R235 R415
29 51K 0402 ±5% 1 R410
30 56K 0402 ±5% 1 R43
31 100K 0402 ±5% 6 R17 R32 R41 R245 R328 R425

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32 120K 0402 ±5% 1 R66
33 150K 0402 ±5% 6 R239 R240 R241 R242 R243 R249
34 150K 0603 ±5% 1 R33
35 180K 0402 ±5% 2 R136 R248
36 270K 0402 ±5% 2 R13 R134
37 330K 0402 ±5% 1 R7
38 750K 0402 ±5% 1 R422
39 1M 0402 ±5% 2 R10 R246
40 1.8M 0402 ±5% 2 R403 R406
Network Resistor
41 1K×4 4×0603 YC164-JR-071K 1 CP1
Adjustable
Resistor
42 47K φ3 EVM3YSX50BQ4 1 VR400
Chip Capacitor
43 10PF 0402 COG，±5%，16V 1 C406
44 27PF 0402 COG，±5%，16V 2 C7 C8
45 100PF 0402 COG，±5%，16V 3 C28 C232 C247
46 100PF 0603 COG，±5%，16V 1 C246
47 220PF 0402 X7R，±10%，
16V
2 C14 C54
48 470PF 0402 X7R，±10%，16V 15
C31 C38 C41 C43 C67 C249 C250 C251
C252 C336 C341 C415 C416 C421 C244
49 470PF 0603 X7R，±10%，16V 3 C5 C40 C241
50 680PF 0402 X7R，±10%，16V 2 C413 C414
51 1000PF 0402 X7R，±10%，16V 5 C53 C65 C68 C248 C420
52 3300PF 0402 X7R，±10%，16V 2 C401 C403
53 0.01UF 0402 X7R，±10%，16V 8 C13 C48 C49 C50 C52 C63 C404 C412
54 0.022UF 0402 X7R，±10%，16V 2 C408 C417
55 0.027UF 0402 X7R，±10%，16V 2 C26 C27
56 0.027UF 0603 X7R，±10%，16V 1 C409
57 0.047UF 0402 X7R，±10%，16V 2 C402 C405
58 0.1UF 0402 X7R，±10%，16V 15
C2 C3 C4 C11 C16 C17 C18 C23 C37 C55
C56 C61 C137 C410 C418
59 0.1UF 0603 X7R，±10%，16V 2 C242 C243
60 1UF 0402 Y5V, +80,-
20%,10V
3 C64 C66 C69
61 1UF 0805 Y5V, +80,-
20%,16V
1 C122
62 22UF 1206 Y5V, +80,-
20%,10V
1 C20
Tan-Capacitor
63 2.2UF Type R ±20% 6.3V 2 C400 C419
64 4.7UF Type R ±20% 6.3V 2 C57 C407
65 10UF Type R ±20% 6.3V 4 C15 C39 C42 C411

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66 6.8UF Type R ±20% 6.3V 1 C245
Inductor
67
BLM18AG601SN1D
0603 Magnetic Beads
600R
5 L1 L3 L9 L400 L401
68 MLF1608DR22K 0603 Lows Multi-layer
inductor 2 L5 L6
69
LQH32MN1ROM23
1210 Winder、Ferrite 1 L207
Diode
70 DAN222 SOT-416 DIODE 1 D401
71 1SS372 SOT-323 DIODE 2 D4 D400
72 LED-02-
0603 QRC
D0603 Red light 1 LED1
73 LED-02-
0603 QGC
D0603 Green light 1 LED2
74 MA2S11100L SOD-523 DIODE 2 D2 D3
Triode
75 2SC4617 SOT-416 TRANSISTOR 3 Q16 Q400 Q401
76 2SC4919 SOT-523 TRANSISTOR 1 Q403
77 2SK1824 SOT-416 FET 2 Q203 Q402
78 DTA114YE SOT-416 TRANSISTOR 1 Q15
79 DTA143ZE SOT-416 TRANSISTOR 1 Q405
80 DTA144EE SOT-416 TRANSISTOR 1 Q206
81 DTC114EE SOT-416 TRANSISTOR 5 Q2 Q3 Q5 Q6 Q202
82 DTC114TE SOT-416 TRANSISTOR 1 Q215
83 FMMT717 SOT-23 TRANSISTOR 1 Q4
IC
84 AT24C64 SOP8 EEPROM 1 IC3
85 NJM2904V SSOP8 ACTICE FIL TER 1 IC201
86 NJM2100V SSOP8 IC（AUDIO AMP） 1 IC400
87 PST9140NR SOT-25A RESET 1 IC6
88 R5F212A8SNFP QFP64 Progra ed CPU 1 IC1
89 RN5VL45C SOT-25A VOL TAG DETECT 1 IC7
90 XC6201P502PR SOT-89-3L IC（5V
steady voltage
1 IC4
91 TDA2822 SOP8 AUDIO AMP 1 IC2
92 WTV040-20SS SSOP20 WTV070825-
1D44K
Record 1 IC5
93 XC6219B332MR QFP5 3.3V
steady voltage
1 IC8
use
94 3A-32V 1206 R429003-3A-32V 1 FU2
Crystal
95 9.8304MHz
8.0×4.5×1.8
NX8045GB 1 X1

ABELL A-82 UHF Service Manual
第4页 共41 页
Version: 01 A82(D04) B Side BOM
No. Specification Packing Description Qty Part No.
Chip Resistor
1 0R 0402 ±5% 6 R24 R111 R304 R308 R453 R456
2 0R 0603 ±5% 1 R201
3 0R 0805 ±5% 1 R203
4 10R 0402 ±5% 3 R103 R129 R216
5 10R 0603 ±5% 1 R312
6 22R 0402 ±5% 4 R120 R218 R222 R336
7 47R 0402 ±5% 2 R200 R202
8 100R 0402 ±5% 6 R76 R101 R114 R117 R133 R331
9 100R 0603 ±5% 1 R123
10 150R 0402 ±5% 1 R314
11 180R 0402 ±5% 2 R121 R130
12 220R 0402 ±5% 1 R323
13 270R 0402 ±5% 3 R125 R204 R205
14 330R 0402 ±5% 2 R217 R221
15 470R 0402 ±5% 2 R300 R329
16 560R 0402 ±5% 2 R106 R140
17 680R 0402 ±5% 3 R220 R232 R233
18 820R 0402 ±5% 1 R457
19 1K 0402 ±5% 10
CP5 R25 R39 R48 R77 R107 R127 R426
R460 R462
20 1.2K 0402 ±5% 1 R128
21 1.5K 0402 ±5% 1 R219
22 1.8K 0402 ±5% 2 R338 R339
23 2.2K 0402 ±5% 3 R108 R313 R455
24 2.7K 0402 ±5% 3 R109 R461 R463
25 2.7K 0603 ±5% 1 L313
26 3.3K 0402 ±5% 9
R105 R124 R224 R225 R332 R334 R436
R458 R459
27 3.9K 0402 ±5% 2 R35 R321
28 4.7K 0402 ±5% 5 R57 R58 R137 R231 R301
29 5.6K 0402 ±5% 5 R104 R434 R440 R450 R452
30 6.8K 0402 ±5% 1 C148
31 10K 0402 ±5% 6 R38 R110 R119 R441 R464 R465
32 12K 0402 ±5% 1 R433
33 15K 0402 ±5% 3 R112 R466 R467
34 18K 0402 ±5% 1 R442
35 22K 0402 ±5% 2 R207 R427