TQ3370
LBI-38858C
Maintenance Manual
SERIAL
PROGRAMMING KIT
TQ-3370
TABLE OF CONTENTS
Page
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
OUTLINE DIAGRAMS
TQ-3370 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Circuit Board A1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SCHEMATIC DIAGRAMS
TQ-3370 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Circuit Board A1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
PRODUCTION CHANGES . . . . . . . . . . . . . . . . . . . . . . . 11
PC INTERFACE CABLE . . . . . . . . . . . . . . . . . . . . . . . . . 11
DESCRIPTION
Serial Programming Kit TQ-3370, includes the Serial Programming Interface
Module 19D438367G2, 117 Vac Power power supply 19B800850P2, and Interface
Module to PC Computer Interface Cable 19B235027P1. TQ-3370-220 Serial
Programming Kit includes the same components except that the 117 Vac Power
Supply is replaced with 220 Vac Power Supply 19B800888P1. The Interface
Module-to-Radio Programming Cables, must be ordered separately.
The Serial Programmer Interface Module provides the interface between
Ericsson mobile and personal radios and an IBM-compatible personal computer.
The interface converts the RS-232 computer input and output levels to the 5-Volt
CMOS levels of the radios. The RS-232 to 5-Volt conversion is accomplished by
integrated circuit U1. Data inputs to U1 are protected from static "spikes" by series
resistors and back to back diodes.
Data from the computer is applied to the Interface Module through J5 on the
printed circuit board A1. This data is buffered by open collector driver transistors
and applied to the radio through radio connector A1-J4. The outputs are lightly
pulled up to 5-Volts by 100k resistors and isolated from the connector by 100 ohm
resistors.
Copyright © 1992 - 2000 Ericsson Inc. All rights reserved.
2
Data from the radio is coupled through A1-J4 where it is buffered by the high
voltage inputs of U3. The inputs to U3 are protected by series resistors and back to
back diodes. The 5-Volt CMOS outputs of U3 are applied to U1, which converts
the 5-Volt inputs to RS-232 output levels that are applied to the computer through
A1-J5. The inputs are pulled up to 5-Volts by 10k resistors.
Radio Connector A1-J4 provides for both true and inverted data lines. The
inverted lines are marked by an asterisk (*) after their function. A radio will have
either a true or inverted signal; it will not use both. Whenever an inverted signal is
used, the true signal must be tied to ground. This prevents the normally high true
input from masking the inverted signal at OR gate U2.
Jacks J1 and J2 provide access to Rx Audio and Mic Hi. Switch S3 provides for
a Push-to-Talk function. Jack J3 permits the Interface Module to be powered from
an external power supply. The connector is compatible with Power supply
19B800850P2. The Interface Module may also be used to provide A+ and a
regulated 5-Volts to the radio.
The 3370 Interface Module also provides a regulated 12-Volt output for programming radio flash memory. This regulator is controlled by the computer’s DTR
line. When DTR is positive (the normal state for an active communications
program) the supply is turned off. When DTR is negative, the supply is turned on.
Q1, a power mosfet, provides the switch function. The input for this regulator comes
in on pin 6 and 18 of radio connector A1-J4. This is to guarantee that the flash
voltage is not applied to the radio before it is turned on. The regulator consists of
two stages. If the input is less than 13.6V, the step up switcher of U4 is used to boost
it up. If the input is above this threshold, the U4 is kept disabled. R12 and R13 set
U4’s threshold level. This provides the input to U5, a 78L12 regulator. It converts
its input into a tightly regulated 12-Volt output. This voltage then goes out on pin
5 of radio connector A1-J4.
3
OUTLINE DIAGRAM
TQ-3370 Assembly
4
INTERCONNECTION DIAGRAM
TQ-3370 Assembly
(19C336934, Rev. 3)
5
6
SCHEMATIC DIAGRAM
Circuit Board A1
19D904011G1
7
(19D904011, Rev. 2)
OUTLINE DIAGRAM
Circuit Board A1
8
PARTS LIST
TQ-3370
SERIAL PROGRAMMING KIT
ISSUE 2
SYMBOL
PART NO.
DESCRIPTION
SERIAL PROGRAMMING INTERFACE MODULE
19D438367G2
SERIAL PROGRAMMING BOARD
19D904011G1
A1
- - - - - - - - - - CAPACITORS - - - - - - - - C1
thru
C3
19A703314P10
Electrolytic: 10 µF -10+50%, 50 VDCW; sim to Panasonic LS Series.
C4
19A705205P7
Tantalum: 10 µF, 25 VDCW; sim to Sprague 293D.
C5
and
C6
19A703314P10
Electrolytic: 10 µF -10+50%, 50 VDCW; sim to Panasonic LS Series.
C7
and
C8
19A701225P3
Electrolytic: 220 µF, -10+50%, 25 VDCW.
C9
19A702061P61
C10
and
C11
19A701225P3
Ceramic: 100 pF ±5%, 50 VDCW, temp coef 0 + or - 30
PPM.
Electrolytic: 220 µF, -10+50%, 25 VDCW.
C12
19A703314P10
Electrolytic: 10 µF -10+50%, 50 VDCW; sim to Panasonic LS Series.
D1
19A700053P2
Silicon: 2 Diodes in Series; sim to BAV99.
D2
thru
D5
19A149615P1
Silicon: Diode Bridge; sim to BGX50A.
D6
thru
D11
19A702977P2
Silicon; sim to Motorola MBRS340T3.
J4
19B209727P26
- - - - - - - - - - - DIODES - - - - - - - - - -
- - - - - - - - - - - JACKS - - - - - - - - - - -
J5
19B209727P6
Connector plug, power receptacle, 25 contacts; sim to
AMP 2006604-1.
Power plug, 25 contacts; sim to AMP 206584-1.
J6
thru
J9
19A704852P132
Printed wire board, two-part; sim to Molex 22-12-2024.
L1
19A149806P4
Reactor: 220 µH ±15%; sim to Dale Electronics IHD-1220.
Q1
RYN122608/1
Transistor.
Q2
thru
Q5
19A705945P1
Silicon, Dual NPN: sim to R OHM IMH4.
R1
19B800607P471
Metal film: 470 ohms ±5%, 1/8 w.
R2
thru
R6
19B800607P101
Metal film: 100 ohms ±5%, 1/8 w.
R7
thru
R10
19B800607P471
Metal film: 470 ohms ±5%, 1/8 w.
R11
19A700050P6
Wire wound: .27 ohms, 2w.
19B800607P242
Metal film: 2.4K ohms ±5%, 1/8 w.
- - - - - - - - - - INDUCTORS - - - - - - - - - -
- - - - - - - - - - TRANSISTORS - - - - - - - - -
- - - - - - - - - - RESISTORS - - - - - - - - - -
*R12
*COMPONENTS ADDED, DELETED OR CHANGED BY PRODUCTION CHANGES
9
SYMBOL
PART NO.
DESCRIPTION
R13
and
R14
19B800607P221
Metal film: 220 ohms ±5%, 1/8 w.
R15
thru
R20
19B800607P103
Metal film: 10K ohms ±5%, 1/8 w.
R21
thru
R24
19B800607P104
Metal film: 100K ohms ±5%, 1/8 w.
R25
and
R26
19B800607P103
Metal film: 10K ohms ±5%, 1/8 w.
R27
19B800607P104
Metal film: 100K ohms ±5%, 1/8 w.
R28
thru
R31
19B800607P101
Metal film: 100 ohms ±5%, 1/8 w.
U1
19A149446P2
Digital: Transmitter/Receiver; sim to MAX232C.
U2
19A703483P311
Digital, high speed CMOS.
U3
19A700176P101
Digital: Hex Inverting Buffer/Converter; sim to 4049UBD.
U4
19A705941P1
U5
19A704971P12
Linear, DC to DC Convertor; sim to Motorola
MC33063AP1.
Positive Voltage Regulator, 12 volt; sim to MC78L12ACD.
U6
19A704971P9
Positive Voltage Regulator, 5 volt; sim to MC78L05ACD.
*J1
and
J2
19A115938P25
Connector, coax: BNC Series, 500 VRMS.
J3
19B800783P2
Receptacle, power: sim to Hosiden HECO-757-01-020.
- - - - - - - INTEGRATED CIRCUITS - - - - - - -
- - - - - - - - - - - JACKS - - - - - - - - - - -
- - - - - - - - - - - PLUGS - - - - - - - - - - P6
Part of W6.
P7
Part of W7.
P8
Part of W8.
P9
Part of W9.
- - - - - - - - - - - SWITCHES - - - - - - - - -
SW1
7481654P6
Pushbutton: single pole, normally open, 1/10 amp at 115
VAC or 1/2 amp at 115 VAC; sim to Grayhill 30-1.
W6
thru
W9
19B234998G1
Cable, programming. Includes:
19A700041P28
19A700041P26
Shell.
Contact: 22-30 AWG; sim to Molex 08-50-0113.
19C336927G1
19C336929P1
19B234985P1
19B209727P46
N404P25B6
N402P5B6
N404P11B6
7141225P2
Housing.
Cover.
Support.
Screwlock: No. 4-40; sim to AMP 205818-2.
Lockwasher, internal tooth, 1/4 inch.
Washer: narrow, steel.
Lockwasher, internal tooth, No. 4.
Nut, Hex: 4-40.
SERIAL PROGRAMMING KIT INCLUDES:
PC Interface Cable.
Power Supply - 121 VAC.
Power Supply - 220 VAC (TQ-3370-220 Only).
- - - - - - - - - - - CABLES - - - - - - - - - -
- - - - - - - - - MISCELLANEOUS - - - - - - - - -
19B235027P1
19B800850P2
19B800888P1
10
PRODUCTION CHANGES
Changes in the equipment to improve performance or to simplify circuits are identified by a "Revision Letter" which is stamped
after the model number of the unit. The revision stamped on the unit includes all previous revisions. Refer to the Parts List for
the descriptions of parts affected by these revisions.
REV. A - INTERFACE MODULE, 19D438367G2
Isolate BNC connectors from ground. Delete solder terminal 4036835P5. J1 & J2 were 19A702270P1.
REV. A - SERIAL PROGRAMMING BOARD, 19D904011G1
Present a high impedance on Vpp line. Add diodes D10 and D11. R12 was 19B800607P222, 2.2 K. PWB
changed.
INTERFACE CABLE
19B235027P1
11
Ericsson Inc.
Private Radio Systems
Mountain View Road
Lynchburg, Virginia 24502
1-800-528-7711 (Outside USA, 804-592-7711)
Printed in U.S.A.
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