Cobra MR HH325VP User manual

Page
Specifications .................................................................................……………………….………...……2
Theory of Operation .……………….........................................………..........……………….....….5
Block Diagram .............................................................................……...…………………………………7
Disassembly Instructions ...........................................................……….........………………………...…8
Alignment Procedures ...……………...........................................…….................…...…………………9
Adjustment Procedure …….....…………...................................................................…………………10
Wiring Diagram ……......................................................................…………..…………………….……12
Printed Circuit Board ....................................................................……………....……………………...13
Troubleshooting …...................................................................................………...……………………16
Exploded View ......................................................................…………………………..………………..17
Mechanical Parts List .....................................................................…………………….…………….…19
Electrical / Packing / Other Parts List ..............................................………………………...…………..21
IC Lead Identification and Internal Diagram ............………………………………………........………..37
Transistor Lead Identification …………………………………………………………….……...……….44
Voltage Chart ...............................................................................………………….……………...……46
Schematic Diagram..........................................................................………………………………...….50
Version:01 Date: Nov 27,2007

Measurement Conditions
Frequency Range:Transmit MHz 156.025 To 157.425
Frequency Range:Receive MHz 156.050 To 162.025
Number of Channels 59 INT Channels
57 USA Channels
57 Canada Channels
Memory Channels All marine channels
Oscillate Mode PLL
Modulation FM(16K0G3E)
Channel Spacing KHz 25
Frequency Stabllity PPM ±10
Stantard Operation Temperature °C -20 To+55
Normal Working Voltage V 7.2 (With 6 AA Ni MH Battery)
Low Limit Working Voltage V 6.3
Battery Lifetime (Tx5%/Rx 5%/Standby 90%) Hour 12.0 (7.2V / 1500mAH)
Memory Retented EEPROM
Antenna Socket TNC
Display LCD With Backlight
Built-ln Speaker Diamter 40mm / Impedance 8 Ohm
Dimension: 64mm(W)×135mm(H)×38.5mm(D)
Weight(Without Battery): 250g
RECEIVER UNIT LIMIT
Sensitivity For 12dB Sinan dBm ≤-118
Squelch
a) squelch threshold dBm ≤-120
b) squelch tight dBm -113 ~ -107
c) hysteresis (tight) dB 2 ~ 7
Rated audio output
@5% Thd Speaker mW ≥250
Deviation sens.for rated output (VR @ max.) ±kHz ≤2.5
Max.S/N ratio @ 1mV dB ≥40
Audio frequency resp.
@300HZ dB 9 ± 3
@2500HZ dB -9 ± 3
Spurious response rejection 10MHz to 1GHz
SPECIFICATIONS
2

78.4MHz dB ≥46
39.2/ 146.8/ 154.4/ 155.9/
157.8/ 158.2/ 163.9/ 249.4MHz dB ≥50
OTHER freq. dB ≥70
Adjacent ch.Rejection dB ≥55
Image rejection dB ≥65
Intermod rejection (3-Gen.Method) dB ≥60
Scan time. per channel ms ≤200
Speaker output 8Ωload @ Max Vol. mW ≥400
StandBy Current mA ≤50
Receiver Current @ Max Vol. mA ≤200
Charging current mA 180 mA ± 50
TRANSMITTER UNIT LIMIT
Carrier power (no mode)
Hi mode W 5±0.8
Mid mode W 3±0.5
Lo mode W 0.8±0.2
Carrier freq.Tolerance ppm ± 10
Modulation limiting ±kHz 4.3~ 4.9
Modulation sens.For ±3 kHz dev. mV 7±3
Audio frequency response ( 1KHz / 0dB ref)
@300HZ dB -12 ± 3
@2500HZ dB +6 ± 3
Audio distortion @ 2.5 khz dew. % ≤5
Hum and noise ratio dB ≥35
Spurious Emission dBm ≤- 36
Current drain (TX)
Hi mode A ≤2
Mid mode A ≤1.5
Lo mode A ≤0.9
Mic Modulation Sen. ( at Sound level of 94 dBA ) ±kHz ≥1.5
Mic Modulation Limiting ( at Sound level of 110 dBA ) ±kHz 4.0 ~ 4.9
Note: All units should be able to approximate these specs. Some will exceed these specs, and others
may drop slightly below them. Limit specs represent the absolute worst condition that might still be
considered acceptable. A unit never fail to meet limit specs.
3

THEORY OF OPERATION
This PLL - controlled VHF marine transceiver provides an accurate and stable multi-channel operation.
The transceiver consists of 6 main sections:
zTransmitter
zReceiver
zLow Voltage Detection
zVibration Alert
zPLL (Phase Lock Loop) Circuit
zMemory Backup
zTransmitter
The audio is picked up from the internal MIC, the audio signal is then amplified by Audio Amplifier, U4
LM324 (2/4), U4 (3/4) and filtered by a low pass filter U4 LM324 (4/4). The audio is adjusted with VR2 to
obtain a suitable audio frequency response, and then modulated with the carrier by VCO, through Varicap
(D11).
The modulated signal output from the VCO is pre-amplified by Q5, Q4 and Q3. Then it is amplified by Q12,
Q6 .The amplified signal then passes through a low-pass filter network which consists of C72, L8, C66,
C15, L6, C4 filters out spurious emission, and the antenna switching circuit, D1, D2. The signal is filtered
by another low-pass filter network which consists of C16, L2, C62, C12, L1, C5, and C1. These low pass
filters are necessary to suppress the second and third harmonics. The signal is then fed into the antenna
input and radiated out. TX current is converted into a voltage signal, that signal fed into U2 LM2904 (2/2)
the Automatic power control (APC) circuit for sampling.
When the unit is transmitting, the audio signal is added to the TX VCO Varicap D11. The capacitance of
D11 is varied following the audio signal and when mixed with the carrier to form the modulated signal.
zReceiver
The receiver uses a double frequency super-heterodyne circuit. The first Immediate Frequency (IF) is 21.4
MHz and the second is 450 kHz.
The RF signal is received by the antenna, and passes through a low-pass filter network C1, L1, C5, C12,
L2, C62, C16, C20, L7, and C67 to filter out the unwanted signal, the antenna switching circuit D1, D2
4

switching circuit to receive. The received RF signal is sent to a SAW filter F1 to filter out-of-band signal.
The RF amplifier Q7 amplifies signals within the range of the frequency coverage and passes though
another saw filter F2 to further filter out-of-band signals. The RF signal then is mixed with the local
oscillation frequency by the mixer Q8. A first IF (Intermediate Frequency) 21.4 MHz is produced. The IF
is passed through a pair of crystal filter F3 (1/2), F4 (2/2) to further filter other unwanted signal. The first
IF then is amplified by Q2 and the IF amplifier U1 (BA4116). U1 is a integrated RF amplifier which
consists of a local oscillator, a demodulator, a second mixer, squelch control circuit, and RF amplifier.
The 21.4 MHz IF then is mixed here with second mixer and converted into 2nd IF 450 kHz. The 2nd IF
passes through a ceramic filter F5 to filter out the residue unwanted signal at pin 5 of U1 (BA4116) output
this final IF signal and the audio signal is output at pin 9 of U1 (BA4116).
The audio signal is fed through a volume control VR3 and finally amplified by audio amplifier U11
(NJM2070) and heard in the speaker.
The squelch control is also controlled by U1 (BA4116). The second IF passes through U1 (BA4116)
internal squelch control R90, C141, C142 form as a squelch amplifier. The ceramic filter produces a
squelch signal (RF noise). Pin 14 of U1 sends the digital squelch control signal to the CPU mute the audio
speaker path. Pin 12 of U1 output a RSSI level to the CPU.
zLow Voltage Detection
The battery voltage, divided by R148, R149 is input to U7 Pin 6 for voltage level sample.
zVibration Alert
When vibration alert is necessary, U7 Pin 54 outputs HI level to turn ON M1 vibration Motor through Q23.
zPLL (Phase Lock Loop) Circuit
The receiver and transmitter both share the same PLL (Phase Lock Loop) Circuit to produce the carrier or
the receive frequency. The local oscillator consists of a fundamental frequency oscillator X2 20.95MHz,
PLL U6 (KB8825), TX VCO Q14 and RX VCO Q13. The fundamental frequency is frequency divided by
U6 and a 12.5 KHz signal is produced. When the VCO frequency applied to and frequency divided by U6
produces a frequency comparable to 12.5 KHz, PLL will control the VCO. When these two frequencies
are matched, a constant control voltage is output from PLL to lock VCO in desired frequency. The PLL
also will output a lock indication to U7 MCU to indicate the PLL is in frequency lock state.
zMemory Backup
U9 AT24C16 is an EEPROM which acts as a memory backup for the working status. When the unit is
switched ON, the MCU will reset the system, clear the RAM, and recall in the memory from the EEPROM
U9 to refresh the RAM in CPU U7.
5

D3
X2
20.95MHz
SPEAKER
VOL
MIC
X3
9.828MHz
VR C3:
VR2
MOD
ULM2: 2904 APC
R103R102
CURRENT DET
U ABC5:,,
1 356SS
21.4MHz
LOB BAT
DAN E235
D9
2 4901SC
QBT26: 3906
24901SC
3 318SK
2 4901SC
R149R148
TX POWER AMP.
FF3, 4
O1
LOW BAT
Q5
BUFFER AMP
RX TX SW/
2 4901SC
Q3
BUFFER AMP
2 3078SK
Q12
TX YOUNGER
UBA1 4116
2,nd LOCAL MIXER SQL
Q2
IF AMP
CRYSTAL BPF
Q8
1st MIX
Q7
RF AMP
DD1, 2
ANT SW
TX RX TRANS/
ANT
QBT9: 3906
VTX VCO
U6
AUDIO
AF POWER AMP
AF POWER
U11
QQQ16, 21, 22
NJM2070
2 1298SA
BT X3904 2
MIC AMP
UBC4: ,
LM324(2/4)
LM324(1/4)
AF MUTE
U205
UPD75307
DATA BACKUP
U9
24 16C
UXC B8: 6204 502
QSA18:2 1298
VCC V5
AUDIO
Q6
RD MVS07 1
LCD
BPF
R77
C141 C142
KB8825
PLL
UD4:
ATIS
FKHz5 450
2-nd if
RX VCO
Q13
2-nd IF DET
H M L POWER CONTROL//
R90
TX VCO
Q14
CPU V5
2 4901SC
Q4
AMP
2 210SK
2 302SK
D11
MOD
1050 &Hz ATIS DET
O2
O3
U3
RESET
XC FC M61 4012
RESET
QBt17: 3904
DBAW16: 56
LM324(3/4)
LPF
BPF
LPF
O4
LPF
SAW BPF
HVU307
MOD
HUV307
D10
HUV307
D12
FCONT.
FCONT.
F HDF B1: 160
RSSI
SQL
SQL
SQL RSSI
BV+7.2 BV+7.2
BV+7.2
BV+7.2
BEEP
BV+7.2
AF SW
1050 &HZ ATIS
1050 &Hz ATIS
AF SW
AF MUTE
RX SW
VTX VCO
RX SW
TX V5
RX V5RX SW
VTXPOW
VCC V5
BEEP
APC
LPF
SAVE
QMB10: 3904
VR1
QMB11: 3904
CLONE
156-163MHz
SAW BPF
156-163MHz
F HDF B2: 160
ATIS
VOL K10
VR A3:
VR B3:
SQL CON-
UD5:
LM324(1/4)
HPF
X1
CBD C450 24
LOCK
DATA
CLK
CS
D4
LCD BACK LAMP
RF PART
CPU PART
BATTERIES
Ni MH V- _7.2
1 3 4 5 6 2
J2
SP MIC JACK/
Q1
2 4901SC
CCC1, 5, 12
LL1, 2
CC62, 16
20.95MHz
PD
R104
QBT24: 3906
QBT25: 3906
RR150 151
RR K153 154 : 20 *5
RR156 157
RR K158 159 : 10 *4
VCC V5
U402
HT1621
V TXPOW
M
MOTOR SW
BV+7.2
MOTOR SW
MOD
Q23
24907SC
BV+7.2
D6D7
KEY BACK LAMP
VCC V5
D5D8
VCC V5
LCD DRIVER
R152
Q27
BT3904
UA4:
CALL DET
LM324(1/4)
CALL DET
Q15
BT3904
CALL DET
CALL
CALL
16/9
HL LOCK/
DOWN
UP
KEY BOARD
TRI
SCAN LAMP
PTT
CALL
MEM
BLOCK DIAGRAM
U7
M38C29FFAHP60K
BACKLIGHT
BACKLIGHT
LOW BAT
6

DISASSEMBLY INSTRUCTIONS
To remove the front and rear panels from the main chassis:
1. Remove the rubber antenna, SPK/MIC knob and the VOL/SQL knob from the main unit.
2. Remove 4 screws from the rear housing of main unit.
3. Detach the die cast from the front housing.
1
2
3
7

ALIGNMENT AND PROCEDURES
This unit has been fully aligned at the factory before shipment and does not normally require further adjustment.
When necessary, however, the unit may be aligned as indicated below.
Do not adjust any circuit in this radiotelephone unless you understand the circuit operation and have
experience in adjusting the radiotelephone. Tampering with the radiotelephone may upset the alignment and
lower its performance.
The test equipment listed below are used for the test setup shown in Fig. 3.1.
This test setup used either partially or totally during the following adjustments.
Test Equipment
1) DC Power Supply (7.2V DC) 0 - 15V 3A max.
2) RF Power Meter 10 W 50 Ohm 100-200 MHz
3) RF Signal Generator 100-200 MHz, 50 ohm termination
4) FM Linear Detector (FMLD) 100-200 MHz
5) Frequency Counter 1-500 MHz
6) Oscilloscope 20 MHz
7) Distortion Meter
8) Sinadder
9) Audio Oscillator
10) Toggle Switch (for use as PTT switch).
Fig. 3.1
RF POWER
METER
DC POWER
SUPPLY
AUDIO OSC
PTT
SWITCH
UNIT
UNDER TEST
OSCILLOSCOPE
SINADDER
FMLD
FREQ
COUNTER
DISTORT
METER
RF SG
SPEAKER
JACK
MIC
ANT
RX TX
COUPLER
8

ADJUSTMENT PROCEDURE
Step Adjustment Test Point Procedure
1 L22 Receive TP1
1. Connect digital voltmeter to TP1 on RF PCB.
2. Set CH01.
3. Adjust L22.
4. TP1 voltage 1.2~1.6V DC.
2 L23 Transmit TP1
1. Connect a digital voltmeter to TP1 on RF PCB.
2. Set CH01.
3. Adjust L23.
4. TP1 voltage 1.2~1.6V DC.
3 VC1 1. Connect the antenna coupler output to a frequency counter.
2. Set channel to CH01 (156.050 MHz).
3. Adjust VC1 to obtain a frequency reading 156.050 MHz±200Hz.
4 VR2
Modulation
1. Connect the antenna coupler output to an FM linear detector.
2. Connect Audio Oscillators to Microphone Jack.
3. Set unit to transmit mode.
4. Set audio oscillator output to -23dBm 1 kHz.
5. Adjust VR2 to obtain ±4.5 kHz deviations.
9

Main PCB
Bottom ViewTop View
VR2
VC1
L22
L23
TP1
10

WIRING DIAGRAM
CHARGER+
CHARGER-
11

Main PCB Top View
PRINTED CIRCUIT BOARD
12

Main PCB Bottom View
PRINTED CIRCUIT BOARD
13

Charger PCB
PRINTED CIRCUIT BOARD
Bottom View
LCD PCB
Bottom View
Top View
Top View
14

TROUBLE SHOOTING
Item Symptom Possible Cause
1 Unit does not turn on.
 Defective power switch VR3.
 Check the battery voltage.
 Defective regulator U8.
2
Speaker no sound with
AF signal applied to
volume control
 Defective volume control.
 Defective speaker.
 Defective U11 and/or associated components.
3 Squelch circuit inoperative  Check squelch control.
 Defective U1 and/or associated circuitry between pin 9, 10 and 11.
4 No receive (RX)
 Defective regulator U8.
 Check TP1 voltage 0.5 – 4V;
 Check second OSC 20.95MHz, pin9 of U6;
 Defective Q7, Q8, Q2.
 Check U1 audio output voltage at pin 9.
 Defective F1 and F2;
5 Low receiver sensitivity
 Check antenna and connector for possible corrosion or bad
connection.
 Failure of the output from Q7, Q8, Q2, U1
 Check the output level of local OSC.
6 No transmit (TX)
 Defective PTT switch.
 Defective regulator U8.
 Check TP1 voltage 0.5 – 4V;
 Check power transmits circuit Q12, Q6, D1, D2 and Q1;
 Check power control circuit Q17, Q18, Q24;
 Check power control circuit U2;
7 Low RF power output
 Check RF power output from Q6, If it checks good, then check and
antenna switching diode D1, D2.
If not good then check the voltage level outputs of the drive
amplifiers Q3 and Q12 as well as the associated circuitry.
8 Poor or no modulation  Defective microphone.
 Defective U4 and/or its associated components.
9 Deviation of transmit
frequency  Check crystal X2and VC1.
15

MAIN UNIT EXPLODED VIEWMAIN UNIT EXPLODED VIEW
16

CHARGER UNIT EXPLODED VIEW
9
17

Ref.No. Description Mfr's Part No.
1 CAB FNT MU COBRA TM832USL ABS GREY DS 022 ROHS 051L003546C017
2 INSU WATERPROOF FILM D9.5MM ROHS 058LD95047-20006
3 INSU SHT- NYLON D37.3 TM832EUL SPEAKER FELT 058L002895C013
4 KEY RUB FUN -6K MAIN TRANSLUCENT 433C TM832USL ROHS 060L002268C013
5 PLAS PLATE-- KEYBOARD MOUNT PMMA TM832EUL ROHS 056L006977D014
6 SPK FLAT 8--OHM D40-H5.2 1---W TAIHEXING TEK404P-8 OHM1W ROHS 002L240145-11004
7KEY RUB FUN -2K RIGHT TM832EUL TRANSLUCENT 433C RED 201C ROHS 060L002270C015
8 METAL PLATE ----- T03 S/S LCD MOUNTING TM832EUL ROHS 063L003946D016
9 LCD TNG- TSF L37.0-W38.0T1.8 P 1/4 5.0V 6 O'CLOCK ROHS 014L019708-10005
10 LENS MAIN LCD BACK LIGHT PLATE PMMA TM832EUL ROHS 055L002778C019
11 INLAY KEY- SUS304+ADHESIVE TM833EUL COBRA ROHS 076L002625-015
12 SCREW MS M2.0L05 PH - + FL S/S ROHS 071L120053-50006
13 PLAS BRACKET BAT ABS+CU+GP POGO PIN CONN TM832EUL ROHS 056L007034C018
14 CUSH RUB- RING FOR UNIT BLK 3U2X TM832EUL ROHS 089L003315C013
15 PLAS LATCH -- PC BLK 3U2X TM832EUL ROHS 056L006976D017
16 METAL LOCK PIN-- T01 S/S TM883USL ROHS 063L003951-011
17 METAL HOUSIN--- ALA TM832EUL DIE CASE ROHS 063L004024D019
18 CUSH SILI SCREW SLEEVE ID:18*DIA:0.8MM DC31M3G ROHS 089L002986-018
19 SCREW TS D2.6L10 PH - + FL S/S ROHS 067L352610-00200
20 SCREW MS M3.0L09 PH - + FL S/S BLK ROHS 071L130093-50001
21 PLAS CLIP---- ATTACHMENT PC BLK 3U2X TM832EUL ROHS 056L006981D010
22 CONNECTOR AT -RECEP 62 CU TM832EUL ROHS 004L990019-01007
23 METAL PALTE--- CONTECTOR T03 BS NI L12 NV366 063L003684-013
24 SCREW MS M2.0L04 PH W + FL MS NI ROHS 070L142004-31104
25 MOTOR YONGLIANXING 1011FE-12TX 3.0V 250MA W/WIRE L=53MM ROHS 027L100030-11010
26 METAL PLATE----- T05 TIN PLATE MOTOR MOUNT ROHS 063L003947C017
27 SCREW M2.6*5MM PM S/S 071L126053-50008
28 PCB 4L FR4- L112.5W57--T10- V4 MAIN TM832EUL L2-3:0.2MM ROHS 116L4832EU-56B42
29 INLAY KEY- SUS304+ADHESIVE TM832EUL UNIT COBRA ROHS 076L002626-012
30 RUBCON YP- 001P L30.1W2.0H5.2 ROHS 011L301801-01037
31 KEY RUB FUN -2K LEFT TRANSLUCENT 433C TM832EUL ROHS 060L002269C010
32 VOL NUT M7*2.0mm (CU) 064L570200-30009
33 KEY SQ-- TM832EUL ABS BLK 3U2X ROHS 054L004484E016
34 KEY VOL- TM832EUL ABS BLK 3U2X ROHS 054L004483D013
35 CUSH RUB- JACK CONN GREY DS 022 TM832EUL ROHS 089L003316C010
36 KEY CAP- MIC TM832EUL ABS BLK 3U2X ROHS 054L004485C011
37 ANTENNA NUT 1/4"9.0*1.8mm (CU) 064L590181-30005
38 PLAS PLATE-- PTT MOUNT PC BLK 3U2X TM832EUL ROHS 056L006978D011
39 CUSH SILI PTT KEY GREY DS 022 TM832EUL ROHS 089L003359C013
40 LENS MAIN TM832EUL COBRA PMMA ROHS 055L002776C015
MAIN UNIT EXPLODED VIEW PART LIST
18

Ref.No. Description Mfr's Part No.
1 PLAS MOUNIG- BAT PACK POCKET ABS BLK 3U2X TM832EUL ROHS 056L006982C011
2 CAB FNT CHG COBRA TM832USL ABS BLK 3U2X CM110-007 ROHS 051L003473D029
3LENS LTGD LED LENS FOR CHG TM832EUL PMMA TRANSPARENT ROHS 055L002779C020
4CONT COM CHARGE-- TM832EUL T03 PHOSPHOR COPPER GP ROHS 061L003059C018
5 PCB SS 94V0 L72---W34.3--T10 CHA GP TM832EUL REV.2 ROHS 116L1HH325-USB27
6 CAB REAR CHG TM832EUL ABS BLK 3U2X COBRA ROHS 052L003066C014
7 RATING LABEL FOR TM832EUL CHG ROHS 081L001998-010
8 CUSH RUB KE941-U 10x1.6 TE238R 089L001127-035
9 SCREW M3.0*8.0mm PB IRON 067L130086-10003
CHARGER UNIT EXPLODED VIEW PART LIST
19

MAIN PCB ASSEMBLY
Ref.No. Description Mfr's Part No.
TM832USL/MAIN/UNIT/ COBRA/US/BLK/REV.0 A28P1030201L0008
TM832USL/MAIN/PCBA/ COBRA/US/BLK/REV.0 A28P2030201L0000
30 RUBCON YP- 001P L30.1W2.0H5.2 ROHS 011L301801-01037
9 LCD TNG- TSF L37.0-W38.0T1.8 P 1/4 5.0V 6 O'CLOCK ROHS 014L019708-10005
10 LENS MAIN LCD BACK LIGHT PLATE PMMA TM832EUL ROHS 055L002778C019
INSU SHT- PVC 36*36MM TM832EUL ASTIGMATISM LIGHT ROHS 058L002947-016
METAL COVER-VCO SHIELD T03 MS NI TM882 063L003545-017
8 METAL PLATE ----- T03 S/S LCD MOUNTING TM832EUL ROHS 063L003946D016
11 INLAY KEY- SUS304+ADHESIVE TM833EUL COBRA ROHS 076L002625-015
29 INLAY KEY- SUS304+ADHESIVE TM832EUL UNIT COBRA ROHS 076L002626-012
CUSH SPON 40*4*3MM TM832 ROHS 089L003426-017
DOUBLE COATED WHITE SPONGE 9*7 *1mm 089L070901-30007
TM832USL/MAIN/SOLDERING/PCBA/ COBRA/US/BLK/REV.0 A28P2130201L0000
C109 CAP-ELE 100-U/M 10-V D5H8---- ROHS 003L121071-02202
C111 CAP-ELE 22--U/M 16-V D4H5---- TRACO ROHS 003L122261-62052
C169 CAP-ELE 22--U/M 16-V D4H5---- TRACO ROHS 003L122261-62052
C170 CAP-ELE 22--U/M 16-V D4H5---- TRACO ROHS 003L122261-62052
C178 CAP-ELE 100-U/M 10-V D5H8---- ROHS 003L121071-02202
C179 CAP-ELE 100-U/M 10-V D5H8---- ROHS 003L121071-02202
C180 CAP-ELE 100-U/M 16-V D6H5 -40+105 *** 003L121071-62214
C185 CAP-ELE 10--U/M 25-V D4H5---- ROHS 003L121062-52000
C186 CAP-ELE 10--U/M 25-V D4H5---- ROHS 003L121062-52000
F3 XTAL- 21M4------ 1K6 -20+70- ZIBOFENGYUAN UM-5 ROHS 007L221425-W0003
F4 XTAL- 21M4------ 1K6 -20+70- ZIBOFENGYUAN UM-5 ROHS 007L221425-W0003
F5 FLTR- 450K----- 7K5 -20+80 SHOULDER LTM450EW 201L545015-A0007
M2 MIC COND 2.2-KOHM D9.7H4.5 3V F9745AP422-118 -62+/-3DB RoHS 034L54LP45-10002
VR3 VR LIN ROT-HOR 10K- A B 25MW HT RG82BS-3A1-B103-OHBE ROHS 026L210338-90004
X1 FLTR- 450K----- +/-4K -20+60 SHOULDER CDB450C24 201L6B450D-B0008
X2 XTAL- 20M95---- 2.5 -30+50ROHS LC15PF VINGIN UM-1 LEAD GREEN 007LF2952C-80003
X3 XTAL- 9M828000- 60- -20+60- ROHS 007L982802-90008
CUSH SPON SINGLE COATED 150X5X4 089L40A505-20005 ROHS 089L003532-018
TM832EUL/LCD-BONDING/PCBA/ COBRA/EU/BLK/REV.0 A28P3030101L0008
U401 C-LCD HT1621-DICE------ LCDD HOLTEK 005LHT1621-10005
TM832EUL/LCD/SMD/PCBA/ COBRA/EU/BLK/REV.0 A28P4030129L0004
C401 CAP-CSM 100-N/K 16-V 0402-X7R *** 003L211041-61360
C407 CAP-CSM 100-N/K 16-V 0402-X7R *** 003L211041-61360
C409 CAP-CSM 1000P/K 10-V 0402--X7R *** 003L211021-01388
R401 RES-TFC 4.7K-OHM 1/16W J 0402- 200PPM ASJ CR10-472-JT 021L247019-10225
R402 RES-CF- 100--OHM 1/16W J 0402- 200PPM ASJ CR10-101-JT 021L210009-10224
PCB 2L FR4- L32---W20---T10 V3 LCD GP TM833USL ROHS 116L2833US-56D33
PARTS LIST
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