Kirisun DP990 Service Manual
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Kirisun DP990 Service Manual

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Professional wireless communication system solution supplier
DP990/DP995
S ERV ICE M A NUA L
ShenZhen Kirisun Communications Co.,Ltd.
V190409

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Summary of Contents for Kirisun DP990

  • Page 1 Professional wireless communication system solution supplier DP990/DP995 S ERV ICE M A NUA L ShenZhen Kirisun Communications Co.,Ltd. V190409...

  • Page 2: Table Of Contents

    DP990/DP995service manual CATELOG 1. Overview ..................................3 1.1. Range of Application ..............................3 1.2. Safety Precautions ................................ 3 1.3. Maintenance Service ..............................3 2. Appearance and LED Indicator ............................4 2.1. Appearance ................................... 4 2.2. LED Indicator ................................5 3. Circuit Description ................................6 3.1.
  • Page 3 DP990/DP995service manual Figure 4 Bottom-layer Layout Drawing of Key Board .....................47 Figure 5 Schematic Diagram of Main Board ........................48 Figure 6 Schematic Diagram of Key Board ........................54 Appendix 3 Material Lists and Schematic Diagrams (136~174 MHZ) ................55 Table 3 Material List (Electronic Part) ..........................55 Figure 1 Top-layer Layout Drawing of Main Board ......................66...

  • Page 4: Overview

    This manual is intended for the maintenance and repair of the DP99X series frequency-modulated handheld 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.

  • Page 5: Appearance And Led Indicator

    DP990/DP995service manual 2. Appearance and LED Indicator 2.1. Appearance DP990 Item Item Item Antenna Belt clip Up key Side key 1 Numeric key LCD screen PTT key Battery latch Audio accessory interface Side key 2 Battery LED indicator Menu/OK key...

  • Page 6: Led Indicator

    DP990/DP995service manual DP995 Item Item Item Antenna Belt clip Audio accessory interface Side key 1 Battery latch LED indicator PTT key Battery Power/Volume knob Side key 2 Microphone Channel knob Speaker Cover screw Top key 2.2. LED Indicator LED State...

  • Page 7: Circuit Description

    DP990/DP995service manual 3. Circuit Description 3.1. Overall Circuit...

  • Page 8: Tx Circuit

    DP990/DP995service manual 3.2. Tx Circuit The TX circuit is mainly composed of three parts below.  RF Power Amplification Circuit A carrier signal TX VCO generates is modulated and amplified before entering the Tx circuit, in which the signal passes a Π-type resistive attenuator to achieve inter-stage isolation between the PA circuit and the TX VCO, enters...

  • Page 9: Rx Circuit

    DP990/DP995service manual 3.3. Rx Circuit The Rx circuit is mainly composed of RF band-pass filters, a low-noise amplifier, a mixer, an IF filter, an IF amplifier and an IF processor.  Front end of Rx circuit High-frequency signals from a low-pass filter pass an electrically tunable bandpass filter 1 the level TV1 controls for filtering out-of-band interference signals, and effective bandpass signals enter a low-noise amplifier (Q1205) for amplification.

  • Page 10: Frequency Synthesizer Circuit

    DP990/DP995service manual The amplified signals the IF amplifier outputs enter the IF subsystem AD9864 (U1201) through its 47th pin for a second frequency mixing, upconverting the first IF signals to the second IF signals (2.25 MHz). The second IF signals are converted to digital signals through ADC sampling, and output through the SSI. The signals enter a DSP (OMAP-L138) for demodulation.

  • Page 11: Gps Circuit

    DP990/DP995service manual 3.5. GPS Circuit Positioning is achieved by the chip AT6558D-5N72. GPS/BDS signals are received by an antenna inductor, and then pass an HPF to filter Tx/Rx in-band signals. The band and harmonic spurious signals are further suppressed. Weak GPS/BDS signals pass a filter for frequency selection and then enter a GPS module for further amplification and filtered.

  • Page 12: Audio Circuit

    DP990/DP995service manual During power-off, the ON/OFF SWITCH is off, the input port PWR_SWITCH_DET detects a low-level power-on signal, and the output port PWR_CTL outputs a low level to turn off the PMOS. 3.6.2. Audio Circuit This circuit achieves audio input and output.

  • Page 13: Functions And Parameters

    DP990/DP995service manual The radio employs an ADC (analog-digital converter) module, a security module, an SD card interface module, an accelerometer module, an LCD module, a key module, a BT module and an ultra-low power consumption RTC (AM18x5) module. The ADC module achieves low-battery alarm and VOX. The USB and UART interfaces reuse the same pin set. The USB port is reused by the radio and BT module.

  • Page 14: Assembly And Disassembly

    DP990/DP995service manual Programming Radio Cable 3. Power on the PC. 4. Power on the radio. 5. Click to run the software. 6. In the main menu, click Read to read the parameters of the radio. 5. Assembly and Disassembly 5.1. Installing/Uninstalling the Battery...

  • Page 15: Installing/Uninstalling The Antenna

    DP990/DP995service manual 5.2. Installing/Uninstalling the Antenna To install the antenna, insert the antenna on the top of the radio and turn it clockwise until it is fastened. To uninstall the antenna, hold its lower part turn it counter-clockwise to loosen it.

  • Page 16: Detaching Main Board From Aluminum-Alloy Holder

    DP990/DP995service manual 5.5. Detaching Main Board from Aluminum-Alloy Holder Step 1 Screw down the eight screws on the mainboard using a Phillips screwdriver. Step 2 Unsolder the motor wire using a soldering iron, and then take down the motherboard. 5.6. Detaching Key Board Step 1 Insert the thin point of a flat-headed screwdriver into the gap between the volume and channel knobs and the top housing, and prize and pull out the knobs.

  • Page 17: Explosion Diagram

    DP990/DP995service manual 5.7. Explosion Diagram 28 29 30 31 32 33 34 39 40 41 DP990 BOM of DP990 Material Code Description 7MBP-4182-02A-W0 Top panel cover, PC1414, black, etched 7MBR-4182-01B-W Numeric key, silicon rubber, black, laser etching, PU oil jet Waterproof metal dome array for numeric key,￠5*3.7,...
  • Page 18 DP990/DP995service manual 7MHP-4182-01A-L6 Side key, black and orange 147K01000067 Top housing, black, no screen print, etched Waterproof microphone (with case) (new waterproof 4SM7-4002-A44 sound-transmitting membrane 157F15000085 Sponge for display screen, black 157F15000060 Foam for FPC stiffener, black, adhesive, 6.0*4.0*1.0 Waterproof speaker, IP68, Φ40, H=5±0.3mm, 16Ω, 1.5W 4SS7-4072-016-015C Speaker holder, 0.7mm thick, stainless steel, natural color...
  • Page 19 4MV3-KFF081522 DC vibration motor Motor case, silicon rubber, yellow 7MHR-4072-09A-W0 7MHS-4072-02A-W STP press plate of motor, stainless steel, original color Mainboard DP990-02, 400~470 MHz, GPS/BDS, Man down, 4W, 62DI000215 hardware V2.0 Mainboard DP990-01, self-locking, crystal compatible, overdischarge 62DI000194 protection Mainboard DP990, 400~480 MHz, GPS/BDS, Man down, 4W, 62DI000219 hardware V1.0...
  • Page 20 DP990/DP995service manual 7WFP-4182-01A Protective film for glass, PET 24 25 26 27 28 29 30 35 36 37 DP995 BOM of DP995 Material Code Description Logo name plate, PC, transparent, with adhesive screen print 7MBP-4193-03A-W0 7MBP-4193-02A-W0 Decorative cover, PC1414, black, etched...
  • Page 21 4MV3-KFF081522 DC vibration motor 7MHR-4072-09A-W0 Motor case, silicon rubber, yellow 7MHS-4072-02A-W STP press plate of motor, stainless steel, original color Mainboard DP990-02, 400~470 MHz, GPS/BDS, Man down, 4W, 62DI000215 hardware V2.0; 62DI000194 Mainboard DP990-01, self-locking, crystal compatible, overdischarge protection Pad for coding/volume knob, PET, 23*9.5*0.4mm...

  • Page 22: Tuning

    DP990/DP995service manual 7MHR-4072-04A-W0 Top waterproof pad, silicone rubber/stainless steel,black STP press plate of alarm key, stainless steel, original color 7MHS-4072-01A-W PVC pad, transparent, Φ5.0mm*2.0mm*0.3mm 7MHP-4072-04A-W0 7GCM-020015010 Sponge mat, EVA, black, adhesive, 1.0mm thick 7MBP-4072-05B-W0 Auxiliary cover board (reinforced rib), PC+silicon rubber, black, etched...

  • Page 23: Tuning (Pc Mode)

    DP990/DP995service manual 6.2. Tuning (PC Mode) 6.2.1. Frequency Bands 350 ~ 400 MHz Chan Middle High Freque Freque Freque 399.987 350. 357. 364. 371. 378. 385. 392. (MHz 350.05 375.05 400.00 350. 357. 364. 371. 378. 385. 392. 399.98 (MHz 350.125...

  • Page 24: Vox

    DP990/DP995service manual b. In PC mode, go to [Low Tx Frequency] (F1~F8) and adjust the low Tx power to 0.8~1.2W. Max. Frequency Deviation a. In PC mode, go to [Max Frequency Deviation] and adjust the value to 4.8.0±0.05kHz. b. In PC mode, go to [Low Frequency Deviation] (F1~F8) and adjust the value to 4.8±0.05kHz.

  • Page 25: Technical Specifications

    DP990/DP995service manual d. QT/DQT decoding: <=-116dBm (0.35uV) e. Squelch-off Rx sensitivity: RF input ≤-127 dBm (L1 squelch) f. Squelch-on Rx sensitivity: RF input ≥-119 dBm (L1 squelch) 6.3.2. Tx a. Output power: 3.8 ~ 4.3W (high); 0.8~1.2W (low) b. Current: <= 1.6A (high Tx power); <=1.0A (low Tx power) c.

  • Page 26: Repairing And Testing Devices

    DP990/DP995service manual Co-channel interference 12dB@12.5kHz, 8dB@25kHz suppression Spurious response rejection TIA603C: 75dB, ETSI: 70dB Conducted spurious -57dBm@< 1GHz, -47dBm@>1GHz emission Blocking 90dB Rated audio power Rated audio distortion 3% (typical) Hum and Noise -40dB@12.5kHz, -45dB@25kHz Audio response +1dB, -3dB 8. Repairing and Testing Devices...
  • Page 27 DP990/DP995service manual A. PLL crystal oscillator U9 is broken. Replace it. PLL fails B. Oscillator transistor is broken. Replace it. C.PLL chip U103 broken. Replace it. Communication fails A. Make sure the channels the both radios communicate on are of the same frequency.

  • Page 28: Appendix 1 Material Lists And Schematic Diagrams (400~480 Mhz)

    DP990/DP995service manual Appendix 1 Material Lists and Schematic Diagrams (400~480 MHZ) Table 1 Material List (Electronic Part) Material Code Materia Name Unit Part NO. 6BLS-MS621FE Button cell BT100 61SM000259 DP990-02 mainboard C111,C128,C152,C200,C618,C61 2CC1-06-X7R500-10 SMD capacitor 9,C803,C804,C808,C1105,C400,C C428,C88,C1014,C1016,C1020,C 1021,C1022,C1023,C1026,C1059, 2CC1-06-C0G500-15 C1060,C1064,C1067,C1068,C106...
  • Page 29 DP990/DP995service manual C112,C117,C118,C625,C1005,C1 2CC1-20-X5R160-10 Multi-layer chip 019,C1046,C1298,C1414,C157,C1 capacitor 58,C159,C178,C1299 2CC1-06-NP0500-1 Precision multi-layer C119 chip capacitor 112C03000022 Ceramic capacitor C120 112C03000023 Ceramic capacitor C121 2CC1-06-C0G250-5 SMD capacitor C122,C1204 2CC1-06-NP0500-10 Multi-layer chip C123,C132,C148,C302,C626,C80 capacitor 6,C809,C904,C1066 112C03000024 Ceramic capacitor C124 2CC1-06-NP0500-56 Multi-layer chip...
  • Page 30 DP990/DP995service manual 2CC1-10-C0G500-12 Multi-layer chip C1262,C1263,C1408,C1215,C140 capacitor 2CC1-20-X5R100-47 Multi-layer chip C1007 capacitor 112C03000017 Ceramic capacitor C1072 2CC1-10-C0G500-8 Multi-layer chip C1450,C1040,C1003,C1004,C124 capacitor 9,C1269,C1403 2CC1-20-X7R500-22 Multi-layer chip C1037,C1078 capacitor 2CC1-10-C0G500-9 Multi-layer chip C1449 capacitor 2CC1-10-C0G500-10 Multi-layer chip C1041,C1045,C1248 capacitor 2CC1-10-C0G500-10 Multi-layer chip...
  • Page 31 DP990/DP995service manual capacitor 2CC1-10-C0G500-11 Multi-layer chip C1035,C1039,C1201 capacitor 2CC1-10-C0G500-27 Multi-layer chip C1272,C1410 capacitor 2CC1-10-C0G500-4 Multi-layer chip C1044 capacitor 112C03000018 Ceramic capacitor C1278,C620,C621 R620,R800,R801,R815,R816,R81 7,R818,R819,R820,R821,R822,R8 23,R824,R825,R826,R829,R1013, 2RS1-06-101J SMD resistor R1015,R1016,R1042,R1043,R104 4,R1050,R1057,R1241,R1242,R12 43,R1244,R1401 R1125,R1103,R1102,C1287,R112, R116,R117,R118,R121,R122,R12 3,R124,R125,R126,R127,R128,R1 30,R131,R132,R134,R136,R137,R 139,R141,R225,R227,R405,R406, 2RS1-06-103J SMD resistor R407,R409,R410,R411,R412,R41...
  • Page 32 DP990/DP995service manual regulator diode 5FT1-SAFFB1G56K Duplexer F900 B0F0A 5XC1-73R4-XDCA SMD crystal filter F1200 H73M R SMD EMI FB100,FB102,FB604,FB1402,DE 5FE1-BLM21P300S suppression filter 1,DE2,DE42,DE43 FE1,FE2,FE6,FB104,FB600,FB60 5FE1-BLM18PG181 1,FB602,FB603,FB605,FB800,FB SMD EMI filter 801,FB803,FB804,FB400,FB1000, FB1001,FB1002,FB300 5FE1-BLM15BB121 SMD EMI filter FB301 FB900,FB903,FB1003,FB1200,FB 1201,FB1203,FB1204,FB1205,R2 5FE1-BLM15AG221 SMD EMI filter...
  • Page 33 DP990/DP995service manual inductor SMD wire wound 2LW1-16UC-120GB 1000,L1202,L1203,L1224 inductor Multi-layer chip 2LL1-16-R27JA L1207 inductor Multi-layer chip 2LL1-16-R10JB L1209 inductor Multi-layer chip 2LL1-16-5N6SA L1211 inductor Multi-layer chip 2LL1-16-18NJA L1212 inductor 2LH1-R401R5-R04- SMD air core L1213,L1214,L1215,L1216,L1410 inductor SMD wire wound 2LW1-16UC-100GA L1217,L1225,L1226,L1403,L1007...
  • Page 34 DP990/DP995service manual transistor (for portable digital and analog radios) 1TF1-RD07MUS2B- ER SMD field effect Q1407 transistor 2RE1-06-1003 Precision resistor R607 2RS1-10-474J Chip resistor R101 R102,R110,R208,R209,R202,R20 2RS1-10-103J Chip resistor 3,R1220,R1439 2RS1-06-470J Chip resistor R103 2RE1-10-1003 Precise SMD resistor R104,R1422,R1430,R108 2RE1-10-1802 Precise SMD resistor...
  • Page 35 DP990/DP995service manual 2RS1-06-562J Chip resistor R1014 2RS1-10-470J Chip resistor R1017,R1045 2RS1-10-121J Chip resistor R1020,R1048 2RE1-06-68R0 Precise SMD resistor R1021 2RS1-06-392J Chip resistor R1022 2RS1-06-121J SMD resistor R1026,R1054 2RE1-06-3301 Precise SMD resistor R1041 2RS1-06-822J Chip resistor R1049,R1203 2RS1-06-100J SMD resistor R1051,R1072...
  • Page 36 DP990/DP995service manual 1IS1-MC74VHC1GT High-speed CMOS U110 analog switch IC Temperature 125O03000002 compensated crystal U201 oscillator 1IP1-OMAPL138EZ Dual-core CPU U401 CEA3 1IM1-IS43D16640C- DDR memory U500 1IS1-ADS1015 AD-to-IC converter U600,U602 1IS1-TLV320AIC14 CODEC chip U601 1IS1-LM4951ASD Audio amplifier U603 General-purpose 121I04000002 U604 linear IC...
  • Page 37 DP990/DP995service manual Front shield cover S1 7MDC-4182-01A-W of main board 7MDC-4207-04A-W Power shield cover Rear-side shield cover 7MDC-4127-03A-W P3,P5 of duplexer board 1 Rear-side shield cover 7MDC-4127-04A-W of duplexer board 2 Front shield cover S4 7MDC-4182-04A-W of main board Shield cover of...

  • Page 38: Appendix 2 Material Lists And Schematic Diagrams (350~400 Mhz)

    DP990/DP995service manual capacitor 112C03000012 Ceramic capacitor C136,C145,C149,C153,C154 2CC1-10-C0G500-20 Multi-layer chip C1268 capacitor 2RE1-10-2003 Precise SMD resistor R106 2RS1-10-155J Chip resistor General-purpose 121I04000010 linear IC 2RE1-10-4909 Precise SMD resistor R51,R11 112R05000001 Precision resistor 2CC1-20-X7R160-47 Multi-layer chip C141 capacitor 2RS1-10-475J Chip resistor...
  • Page 39 DP990/DP995service manual C1275,C1279,C1288,C1289,C12 95,C1297,C1303,C1305,C916,C9 18,C100,C114,C628,C115,C113, C833 C102,C126,C131,C135,C140,C14 3,C151,C156,C301,C305,C314,C 323,C501,C502,C504,C505,C507 ,C508,C510,C601,C605,C609,C6 23,C627,C805,C807,C810,C812, 2CC1-06-C0G500-101J SMD capacitor C813,C814,C815,C816,C817,C81 8,C819,C820,C821,C822,C919,C 511,C905,C1029,C1043,C1083,C 1115,C1280,C1281,C1284,C1285 ,C1286,C1292,C1293,C1294,C12 96,C1300 2CC1-06-NP0500-330 Multi-layer chip capacitor C106 C107,C634,C635,C1104,C1264,C 112C03000026 Ceramic capacitor 1417,C1427,C1432 2CC1-20-X7R500-226M Multi-layer chip capacitor C108,C169,C137,C138 C111,C128,C152,C200,C618,C61 2CC1-06-X7R500-102K SMD capacitor 9,C803,C804,C808,C1105,C400,...
  • Page 40 DP990/DP995service manual 2CC1-06-C0G500-220J SMD capacitor C834,C1076 2CC1-10-C0G500-2R5C Multi-layer chip capacitor C900,C903,C1460 C902,C1017,C1036,C1065,C144 2CC1-10-C0G500-1R5C Multi-layer chip capacitor C906,R135,R216,R217,R438,R62 8,R903,R907,R908,R916,R1046, 2RS1-06-000O SMD resistor R1053,R1056,R1065,R1235,R12 55,R240,R909,R705,R100,R1000 ,R1019,R1033,R1047,R243,R900 2CC1-10-C0G500-470J Multi-layer chip capacitor C907,C1230,C1301 2CC1-06-X5R6R3-474K SMD capacitor C1103,C327,C328 2CC1-10-C0G500-4R7C Multi-layer chip capacitor C1050,C1437,C1239 C1040,C1051,C1052,C1262,C14 2CC1-10-C0G500-120J...
  • Page 41 DP990/DP995service manual 1,R132,R134,R136,R137,R139,R 141,R225,R227,R405,R406,R407 ,R409,R410,R411,R412,R416,R6 02,R609,R617,R649,R803,R804, R806,R814,R827,R828,R1102,R1 103,R1233,R1234,R1248,RE1001 ,RE1002,RE1003,RE1004,RE120 1,R1125,R366 2CC1-10-X7R160-473K Multi-layer chip capacitor C1419 2CC1-10-X7R500-103K Multi-layer chip capacitor C1423,C1426 2CC1-10-C0G500-390J Multi-layer chip capacitor C1454 2CC1-10-C0G500-240J Multi-layer chip capacitor C1456 1DR1-NSR1020MW2T1 SMD Schottky barrier diode D100 1DZ1-PESD12VS1UB SMD voltage regulator diode...
  • Page 42 DP990/DP995service manual 2LW1-3315-4R7K SMD wire wound inductor L101,L102,L103 2LW1-16UC-6R8C SMD wire wound inductor L900,L901 2LW1-16UC-3R9C SMD wire wound inductor L902,L903 2LW1-16UC-150G SMD wire wound inductor L1007,L1226 L1001,L1002,L1006,L1008,L100 2LW1-16UC-331G SMD wire wound inductor 9,L1010,L1013,L1206,L1210 2LW1-16UC-181J SMD wire wound inductor L1003,L1227 2LW1-16UC-470G...
  • Page 43 DP990/DP995service manual 121D03000006 Rectifier diode Q1204 SMD field effect transistor 1TF1-RD01MUS2-501 (for portable digital and Q1406 analog radios) ER SMD field effect 1TF1-RD07MUS2B-501 Q1407 transistor 2RE1-06-1003 Precision resistor R607 2RS1-10-474J Chip resistor R101 R102,R208,R201,R1220,R210,R2 2RS1-10-103J Chip resistor 11,R110 2RS1-06-470J Chip resistor...
  • Page 44 DP990/DP995service manual R910,R1032,R1034,R1035,R105 2RS1-10-100J Chip resistor 5,R1066,R1201 R904,R1036,R1037,R1040,R106 2RE1-06-1002 Precise SMD resistor 1,R1063 2RS1-10-202J Chip resistor R1004,R1230 R1007,R1023,R1101,R1240,R12 2RS1-16-100J Chip resistor 2RS1-06-562J Chip resistor R1014 2RS1-10-470J Chip resistor R1045 2RS1-10-121J Chip resistor R1048 2RE1-06-68R0 Precise SMD resistor R1021 2RS1-06-392J Chip resistor...
  • Page 45 DP990/DP995service manual 2RS1-16-271J Chip resistor R1441 2RS1-10-473J Chip resistor R1442 2RS1-10-823J Chip resistor R1444 2RS1-16-103J Chip resistor R1447,R119 2RT1-NTH5G16P40B33 SMD thermistor R1449 1IS1-TPS65023 Power management chip U100 1IS1-AM1805AQ RTC IC U101 High-speed CMOS analog 1IS1-MC74VHC1GT66 U110 switch IC Temperature compensated...
  • Page 46 DP990/DP995service manual 7MDC-4207-04A-W Power shield cover Rear-side shield cover of 7MDC-4127-03A-W P3,P5 duplexer board 1 Rear-side shield cover of 7MDC-4127-04A-W duplexer board 2 Front shield cover S4 of 7MDC-4182-04A-W mainboard Shield cover of DP990EX 147K02000063 P7,P8 mainboard P2 Shield cover of DP990EX...
  • Page 47 DP990/DP995service manual STP antenna cathode contact 7MDC-4072-02A-G sheet Figure 1 Top-layer Layout Drawing of Main Board Figure 2 Bottom-layer Layout Drawing of Main Board...
  • Page 48 DP990/DP995service manual Figure 3 Top-layer Layout Drawing of Key Board Figure 4 Bottom-layer Layout Drawing of Key Board...
  • Page 49 DP990/DP995service manual Figure 5 Schematic Diagram of Main Board...
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  • Page 55 DP990/DP995service manual Figure 6 Schematic Diagram of Key Board...
  • Page 56 DP990/DP995service manual Appendix 3 Material Lists and Schematic Diagrams (136~174 MHZ) Table 3 Material List (Electronic Part) Material Code Materia Name Unit Part NO. 6BLS-MS621FE Button cell BT100 SMD mainboard DP990-01, crystal 61SM000203 compatible, overdischarge protection C1,C111,C128,C152,C200,C 618,C619,C803,C804,C808,C 2CC1-06-X7R500-102K SMD capacitor...
  • Page 57 DP990/DP995service manual ,C1018,C1027,C1047,C1255, C1257,C1089 C1087,C1090,C1093,C1094, C1253,C1273,C1279,C1288, C1289,C1295,C1297,C1303, C101,C104,C110,C130,C134, C147,C201,C304,C306,C308, C310,C313,C315,C317,C318, C322,C324,C326,C512,C603, C607,C611,C613,C614,C615, 2CC1-06-X5R250-104K SMD capacitor C622,C633,C637,C801,C833, C1100,C1101,C701,C703,C7 05,C707,C910,C913,C1002,C 1008,C1009,C1010,C1011,C1 012,C1013,C1015,C1025,C10 48,C1053,C1054,C1055,C105 6,C1057,C1058,C1061,C1063 ,C1091,C1092,C920,C928,C9 29,C113 C88,C1014,C1016,C1020,C1 021,C1022,C1023,C1026,C10 59,C1060,C1064,C1067,C106 2CC1-06-C0G500-151J SMD capacitor 8,C1069,C1070,C1095,C1096 ,C1097,C2301,C2303,C2305, C2307,C2413,C2414,C103,C 105,C2324,C2326 C100,C109,C114,C133,C139, C146,C300,C303,C307,C309, C311,C312,C316,C319,C320, C321,C325,C500,C503,C506, 2CC1-06-X5R100-105M SMD capacitor...
  • Page 58 DP990/DP995service manual 2CC1-06-C0G250-5R0C SMD capacitor C122 Multi-layer chip C123,C132,C148,C302,C626, 2CC1-06-NP0500-100 capacitor C806,C809,C904,C1066 112C03000024 Ceramic capacitor C124 Multi-layer chip 2CC1-06-NP0500-560 C125 capacitor 112C03000009 Ceramic capacitor C127 2CC1-06-C0G500-470J SMD capacitor C142,C612,C2446 Multi-layer chip 2CC1-06-X7R160-103 C144 capacitor C155,C921,C922,C924,C925, 2CC1-06-X5R6R3-225M SMD capacitor C930 112C03000027...
  • Page 59 DP990/DP995service manual Multi-layer chip 2CC1-10-C0G500-3R3J C1065 capacitor Multi-layer chip 2CC1-10-C0G500-680J C2343 capacitor Multi-layer chip 2CC1-10-C0G500-121J C1082,C2415 capacitor Multi-layer chip 2CC1-10-C0G500-240J C2418,C2347,C2348 capacitor Multi-layer chip 2CC1-10-X7R500-332K C2322 capacitor Multi-layer chip C1271,C2332,C2419,C2338, 2CC1-10-X7R500-102K capacitor C116 Multi-layer chip C2434,C2435,C1074,C1079, 2CC1-10-C0G500-120J capacitor C1080 Multi-layer chip...
  • Page 60 DP990/DP995service manual capacitor Multi-layer chip 2CC1-10-C0G500-220J C2357,C2432,C2451 capacitor Multi-layer chip 2CC1-10-C0G500-9R0C C2360,C1003,C1004 capacitor 2CC1-06-C0G500-6R0C SMD capacitor C2403 112C03000032 Ceramic capacitor C2404 2CC1-06-C0G500-150J SMD capacitor C2405,C2407,C2410 2CC1-06-C0G500-300J SMD capacitor C2408 Multi-layer chip C2409,C2411,C2308,C2311, 2CC1-06-NP0500-120 capacitor C2452 Multi-layer chip 2CC1-10-C0G500-150J C2416,C2346,C2335 capacitor...
  • Page 61 DP990/DP995service manual 5FE1-BLM15BB121SN1 SMD EMI filter FB301 FB2300,FB2301,FB2400,FB240 SMD EMI suppression 5FE1-BLM11A601S filter 2,L2304 DCDC power converter 1IS1-R1244N001B IC100 chip 1IS1-OPA348 Operational amplifier IC IC1000 SMD board-to-board 3CB1-DF23C16DS J800 connector Wire wound power 2LG1-SWPA3015S-4R7 L100 inductor SMD wire wound 2LW1-3315-4R7K...
  • Page 62 DP990/DP995service manual inductor 112L01000014 Air-core inductor L2313,L2314,L2315 2LH1-R401R5-L07-05 SMD air core coil L2319 SMD wire wound 2LW1-16UC-120G L2316 inductor SMD wire wound 2LW1-16UC-330G L2402,L2403 inductor 2RS1-20-103J Chip resistor L2318 SMD wire wound 2LW1-20UC-470GA L2320 inductor SMD wire wound 2LW1-16UC-390G L2321,L2407...
  • Page 63 DP990/DP995service manual R913,R2413,R138,R140,R14 2RS1-10-204J Chip resistor R109,R633 2RE1-10-4991 Precise SMD resistor R111 R113,R218,R219,R232,R233, R234,R235,R236,R238,R239, R241,R418,R420,R422,R428, 2RS1-06-330J SMD capacitor R429,R430,R431,R432,R433, R435,R437,R441,R442,R606, R653,R654,R655,R808,R809, R2328,R918,R919 R114,R115,R610,R612,R614, 2RS1-06-472J SMD capacitor R1038,C199 R204,R205,R206,R207,R212, R213,R220,R221,R222,R223, 2RS1-06-220J SMD capacitor R224,R417,R805,R2316,R23 30，R155 2RE1-06-1202 Precise SMD resistor R237,R242,R2411 2RE1-10-49R9-D...
  • Page 64 DP990/DP995service manual 2RS1-10-822J Chip resistor R1069 2RS1-10-221J Chip resistor R1225 2RS1-10-510J Chip resistor R1238,R2344 2RS1-06-681J SMD capacitor R1249 112R01000018 Chip resistor R2308,R2315,R2420 2RS1-32-R39J Chip resistor R2309,R2310,R2311 2RS1-10-225J Chip resistor R2312,R2317 2RE1-10-2203 Precise SMD resistor R2313,R2329 112R01000017 Chip resistor R2314 2RS1-06-680J...
  • Page 65 DP990/DP995service manual 1IS1-LM4951ASD Audio amplifier U603 General-purpose 121I04000002 U604 linear IC Dual-SPDT analog 1IS1-TS3A24159YZPR U800 switch 1IS1-AT2659 Low-noise amplifier U900 SMD voltage 1IS1-XC6204B332MR U902,U1002 regulator IC 121I05000080 SMT IC U903 121I05000024 SMT IC U904 SMD voltage 1IS1-XC6204B502MR U1000,U1004,U1202 regulator IC...
  • Page 66 DP990/DP995service manual 7MDC-4072-10A-W STP-V shield cover 4 Front-side shield 7MDC-4127-02A-W cover of duplexer board 2 Rear shield cover S9 7MDC-4182-08A-W of mainboard 7MDC-4072-07A-W STP-V shield cover 1 Top-layer shield cover 7MHC-4187-05A-W Shield cover of 147K02000062 DP990EX mainboard 61SL000008 Burning software...
  • Page 67 DP990/DP995service manual Multi-layer chip 2CC1-10-C0G500-331J C1099 capacitor SMD wire wound 2LW1-16UC-270GA L2317 inductor Multi-layer chip 2CC1-10-C0G500-6R8C C1017 capacitor STP antenna anode 7MDC-4072-01A-G contact sheet STP antenna cathode 7MDC-4072-02A-G contact sheet Figure 1 Top-layer Layout Drawing of Main Board Figure 2 Bottom-layer Layout Drawing of Main Board...
  • Page 68 DP990/DP995service manual Figure 3 Top-layer Layout Drawing of Key Board Figure 4 Bottom-layer Layout Drawing of Key Board...
  • Page 69 DP990/DP995service manual Figure 5 Schematic Diagram of Main Board...
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  • Page 75 DP990/DP995service manual Figure 6 Schematic Diagram of Key Board...
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