Icom IP501M User manual

SERVICE
MANUAL
S-15606XZ-C1
September 2019
IP ADVANCED RADIO SYSTEM
IP501M

INTRODUCTION
This service manual describes the latest technical
information for the IP501M IP ADVANCED RADIO
SYSTEM at the time of publication.
MODEL VERSION VERSION
NUMBER
IP501M
USA-31 #31
EXP- 41 # 41
AUS-51 #51
To upgrade quality, any electrical or mechanical parts and
internal circuits are subject to change without notice or
obligation.
SERVICE CAUTION
NEVER connect the transceiver to an AC outlet or
to a DC power supply that outputs more than the
specified voltage. This will ruin the transceiver.
DO NOT expose the transceiver to rain, snow or
liquids.
DO NOT reverse the polarity of the DC power cable
when directly connecting to the transceiver.
DO NOT apply an RF signal of more than 20 dBm
(100 mW) to the antenna connector. This could
damage the transceiver.
ORDERING PARTS
Be sure to include the following four points when
ordering replacement parts:
1. 10-digit Icom part number
2. Component name
3. Equipment model name and unit name
4. Quantity required
<ORDER EXAMPLE>
1130018740 RX8130CE IP501M MAIN-A UNIT 5 pieces
8930084370 3405 LENS IP501M CHASSIS-A 1 piece
Addresses are provided on the inside back cover for
your convenience.
REPAIR NOTES
1. Make sure that the problem is internal before
disassembling the transceiver.
2. DO NOT open the transceiver until the transceiver
is disconnected from its power source.
3. DO NOT keep power ON for a long time when the
transceiver is defective.
4. READ the instructions of the test equipment
thoroughly before connecting it to the transceiver.
Icom, Icom Inc. and the Icom logo are registered trademarks of Icom Incorporated (Japan) in Japan, the United States, the
United Kingdom, Germany, France, Spain, Russia, Australia, New Zealand, and/or other countries.
TRANSCEIVER
IP501M
MICROPHONE
HM-241

TABLE OF CONTENTS
SECTION 1 SPECIFICATIONS
SECTION 2 INSIDE VIEWS
SECTION 3 DISASSEMBLY INSTRUCTIONS
SECTION 4 OPTIONAL CABLE INSTALLATION
SECTION 5 VERIFICATION PROCEDURE
5 -1 PREPA R ATIO N ……………………………………………………………………………………… 5-1
5-2 LTE TRANSCEIVER ………………………………………………………………………………… 5-3
5-3 AUDIO SYSTEM …………………………………………………………………………………… 5-4
5-4 BLUETOOTH UNIT ………………………………………………………………………………… 5-4
5-5 GENERAL …………………………………………………………………………………………… 5-5
SECTION 6 PARTS LIST
SECTION 7 MECHANICAL PARTS
SECTION 8 BOARD LAYOUTS
SECTION 9 BLOCK DIAGRAM
SECTION 10 VOLTAGE DIAGRAM

1-1
SECTION 1 SPECIFICATIONS
GENERAL
• Power supply voltage: 13.8 V±10% DC, 26.4 V±10% DC
• Current drain: Less than 1.2 A (Supply voltage 13.8 V DC)
Less than 0.8 A (Supply voltage 26.4 V DC)
• Operable environment: Temperature −10°C~+60°C (−14°F~140°F)
Humidity 25~85% (Without condensation)
• Dimensions (projections not included):125 (W)×156 (H)×29 (D) mm, 4.9 (W)×6.1 (H)×1.1 (D) inches
• Weight (approximate):840 g, 1.9 Ib (Without microphone)
• LAN interface: [LAN] port (RJ-45 type) ×1 (Auto MDI/MDI-X)
IEEE802.3/10BASE-T, IEEE802.3u/100BASE-TX
• User interface: Function display, LED indicator (TX/RX, MSG)
• External speaker jack 3.5 mm (⅛ in) (d) 4 Ω impedance monaural
• External device connector: [EXT I/O] port (For optional OPC-2407 D-sub 25 pin cable)
• Antenna: LTE antenna ×2 (RPSMA), GPS antenna ×1 (SMA)
• IP rate: IP54 (Only when the microphone is attached)
VOICE COMMUNICATION
• Codec: G.726
• Frequency range: 300~3400 Hz
• Audio output power: More than 4 W (External speaker 4 Ω10% distortion)
• Output impedance: External speaker 4 Ω
• Input (microphone) impedance: 600 Ω
3G (W-CDMA)
• Frequency band: [USA-31] B2, B5
[EXP- 41] B1, B8
[AUS-51] B1, B5
4G (LTE)
• Frequency band: [USA-31] B2, B4, B12
[EXP- 41] B1, B3, B7, B8, B20
[AUS-51] B1, B3, B5, B7, B8, B28
GNSS
• GPS: 1575.42 MHz±1.023 MHz
• GLONASS: 1597.5~1605.8 MHz
Bluetooth
• Frequency range: 2402~2480 MHz
All stated specifications are subject to change without notice or obligation.
VERSION CORRESPONDING MEASUREMENT STANDARD
USA-31 FCC Part 15 Class B/ICES003, FCC Part 15C, FCC Part 22, FCC Part 24, FCC Part 27, PTCRB
EXP- 41 EN 300 328, EN 303 413, EN 301 489, EN 301 908, EN 55024, EN 55032, EN 62311, EN 62368-1,
ECE Regulation No. 10
AUS-51 AS/NZS Standard

2-1
SECTION 2 INSIDE VIEWS
• FRONT-C UNIT (TOP VIEW)
• FRONT-C UNIT (BOTTOM VIEW)
J1
J2
LCD (DS101)[Address] (S1)
[Call History] (S2)
[FUNC] (S3)
[CLR/Lock] (S4)
FRONT PANEL

2-2
• FRONT-D UNIT (TOP VIEW)
• FRONT-D UNIT (BOTTOM VIEW)
J1
J2 INVERTER (IC101)
INVERTER (IC101)
OVER CURRENT PROTECT SWITCH
(S2)
[MICROPHONE] (J1)
[DIAL] (S1)
J3
FRONT PANEL

2-3
• MAIN-A UNIT (TOP VIEW)
J201J202 J503 J203J951LTE MODULE
(IC201)
DC POWER CABLE ASSEMBLY
(W2: CHASSIS UNIT)
AF POWER AMPLIFIER
(IC504)
LTE ANTENNA (SUB)
(W5: CHASSIS-A UNIT)
LTE ANTENNA (MAIN)
(W5: CHASSIS-A UNIT)
GPS ANTENNA
(W1: CHASSIS-A UNIT)
LAN CABLE
(W3: CHASSIS-A UNIT)
MAIN-A UNIT
1.8 V REGULATOR
(IC871)
J151
J501J604
3.3 V REGULATOR
(IC811)
REAL TIME CLOCK MODULE
(IC952)
RS-232
DRIVER/RECEIVER
(IC506)
EEPROM
(IC106)
I/O INTERFACE
(IC302)
LEVEL CONVERTER
(IC301)
COMPARATOR
(IC241)
Bluetooth MODULE
(IC603)
COMPARATOR
(IC753)
J502

2-4
• MAIN-A UNIT (BOTTOM VIEW)
J254 J253
ETHERNET REFERENCE CLOCK
(X951)
ETHERNET TRANSCEIVER IC
(IC951)
FLASH ROM
(IC104)
SIM SELECTOR
CIRCUIT
DC/DC ENABLE
CONTROL CIRCUIT
13.8 V DC/DC
CONVERTER CIRCUIT
POWER ON
CONTROL CIRCUIT
REVERSE CONNECT
PROTECT
(D851)
3.3 V
REGULATOR
(IC852)
3.3 V DC/DC
CONVERTER
(IC802)
3.8 V DC/DC
CONVERTER
(IC821)
5 V REGULATOR
(IC831)
8 V REGULATOR
(IC803)
9 V DC/DC
CONVERTER
(IC801)
ELECTRONIC
VOLUME
(IC703)
CODEC
(IC401)
SDRAM
(IC103)
Inside the shielded case.
SDRAM
(IC102)
Inside the shielded case.
CPU
(IC101)
Inside the shielded case.
ANALOG SWITCH
(IC752)
MAIN-A UNIT

3-1
SECTION 3 DISASSEMBLY INSTRUCTIONS
1. REMOVING THE FRONT PANEL
1) Remove the 4 screws, and then the top cover from the
chassis.
Top cover
Chassis
Screws ×4
2) Remove the 4 screws, and then the bottom cover from
the chassis.
Bottom cover
Chassis
Screws ×4
3) Lift both tabs using flat screwdrivers and pull forward on
the front panel as shown in the illustration below.
Flat screwdrivers
Chassis
Front panel
Front seal
WARNING: NEVER use your ngernail to lift the tabs.
Otherwise, you may cause injury.
BE CAREFUL: The front seal is attached between the
front panel and the chassis. If the front seal is damaged,
replace it to a new one to maintain the dustproof/
waterproof performance.
4) Disconnect the Bluetooth cable from the MAIN-A UNIT,
and the flat cable from the FRONT-D UNIT, and then
remove the front panel from the chassis.
J2J2
J604
J604
Front panel
FRONT-D UNIT
MAIN-A UNIT
Bluetooth cable
Chassis
Flat cable
BE CAREFUL when you disconnect the Bluetooth
cable from the MAIN-A UNIT, and the at cable from the
FRONT-D UNIT. To keep from damaging them.
2. REMOVING THE MAIN-A UNIT
1) Disconnect the LAN and external speaker cables from
the MAIN-A UNIT.
J951J951
J503
J503
MAIN-A UNIT
LAN cable
Extanal speaker cable
Chassis
2) Disconnect the main antenna, sub antenna, and GPS
antenna cables from the MAIN-A UNIT.
MAIN-A UNIT
Sub antenna cable
Main antenna cable
GPS antenna cable
Chassis
J202J202
J203
J203
J201
J201

3-2
2. REMOVING THE MAIN-A UNIT (CONTINUED)
3) Unsolder the 2 points of the DC power cables, and a
point of the ignition cable.
Ignition cable
DC power cables
UNSOLDER
Solder
remover
Chassis
MAIN-A UNIT
4) Remove the 7 screws, and then remove the MAIN-A
UNIT from the chassis.
Chassis
MAIN-A UNIT
Screws ×7
3. REMOVING THE FRONT-D UNIT
1) Remove the dial knob and nut from the front panel.
Front panel
Nut
Dial knob
2) Remove the 2 screws, and then remove the FRONT-D
UNIT from the front panel.
Screws ×2
FRONT-D UNIT
Front panel
4. REMOVING THE FRONT-C UNIT
Remove the 2 screws, and then remove the FRONT-C
UNIT from the front panel.
Screws ×2
FRONT-C UNIT
Front panel