Motorola SABER NTN4734A User manual

MANUAL REVISION
(MA) MOTOROLA INC.
for
Manual No. 6881106C65-O
SABER™ SERIES
Handie-Talkie Portable Radios
Mode! NTN4734A and NTN4786A
Single-Unit Rapid-Chargers
Instruction Manual
This revision outlines changes that have occurred since the printing of your manual. Use this information to
supplement your manual. Installation of these changes in earlier equipment is not necessary except as
recommended in Motorola Service and Repair Notes (SRN's).
REVISION DETAILS
NO. CHANGE AFFECTS
1CIRCUIT BOARD DETAIL
2ELECTRICAL PARTS LIST
3SCHEMATIC DIAGRAM
4EXPLODED VIEW PARTS LIST AND DIAGRAM
5INTRODUCTION
5DESCRIPTION
5IN CASE OF TROUBLE
5CIRCUIT DESCRIPTION
CHANGES
agege 5, CIRCUIT BOARD DETAIL, delete C1
NOTE
Nickel-metal hydride batteries (NI-MH) as
offered by Motorola are lead, mercury, and
2. On page 6,ELECTRICAL PARTS LIST change the cadmium free and are considered
following: "environmentally friendly." Additionally, with
proper care and use, these batteries deliver
REF. MOTOROLA increased capacity over nickel-cadmium
C1 2360561H19 delete
C5 2360561H19 change to
1.Onp
and C2
SYM.> PARTNO. ACTION DESCRIPTION batteries of similar size
C2 2360561H19 delete TO ASSURE MAXIMUM BATTERY LIFE
and gain maximum usage (duty cycle and
these higher capacity batteries.
2360561M85 3300 product life), RAPID CHARGE ONLY with
Although compatible with existing product
chargers, the use of continuous slow or
3. On page 7, SCHEMATIC DIAGRAM delete C1 and
C2 and change the value of C5 from 1000 uF to 3300
LLF standard-rate charging will reduce the useful
4. On page 8, EXPLODED VIEW PARTS LIST AND life and capacity of batteries. Battery life can
DIAGRAM, delete item 19. be optimized if batteries are removed from
5. 1. INTRODUCTION, page 1. the rapid charger after the charge cycle is
completed. The charge cycle is completed
when the red indicator light goes out and the
green light comes on.
A. Insert, and nickel metal hydride (NI-MH), after
nickel-cadmium in the first sentence.
B. At the end, just before the WARNING, add the For optimal charge performance, nickel-
following battery: metal hydride batteries should be at room
*NTN7014A High-Capacity Nickel-Metal Hydride temperature (20-30°C) prior to placement in
C.After the batteries and just before the WARNING, the charger.
add the following note:
January 24, 1992 FMR-1545-2
High-Capacity

D. Add the following to the WARNING:
*Motorola recommends proper recycling of ALL
rechargeable batteries.
7. On page 1, under 3. DESCRIPTION, after nickel-
cadmium in the safety instruction (WARNING section),
insert, and nickel-metal hydride (NI-MH).
8. On page 2, under 5. IN CASE OF TROUBLE,
complete the following changes:
A. Change the WARNING to read:
WARNING
USE ONLY MOTOROLA NICKEL-
CADMIUM (NI-CD) OR NICKEL-METAL
HYDRIDE (NI-MH) BATTERIES WITH
THIS CHARGER.
B. Before 6. CIRCUIT DESCRIPTION, add the
following:
BLINKING CHARGER INDICATOR LIGHTS
The battery circuitry has been designed to
regulate the rapid charge rates to provide
optimum performance and maximum cycle life.
In some cases, new batteries and batteries that
have had periods of prolonged storage may
require more than a2-hour rapid-charge cycle to
achieve rated capacity. SABER™ (MX1000)
chargers have amaximum 2-hour rapid-charge
fault mode and will time-out if rapid-rate
charging has not been completed prior to two
hours.
If this condition occurs, the charger's red
indicator lights will flash. When this happens,
remove the battery from the charger, allow the
battery temperature to cool, and then re-insert in
the charger to complete the charge cycle. The
period of time required for the battery to reach
normal temperatures should not exceed one
hour. If the problem with flashing lights continues
to exist, afault has been detected in the battery
or charger, indicating repair or replacement.
9. On pages 2and 3, under 6. CIRCUIT
DESCRIPTION, add the following:
A. On page 3, Table 1. Normal RC Values, and in
the first box under battery type, add NTN7014A.
B. In Table 2. Charging Rates, and in the first box
under battery type, add NTN7014A.
D. Add the following to the WARNING:
*Motorola recommends proper recycling of ALL
rechargeable batteries.
7. On page 1, under 3. DESCRIPTION, after nickel-
cadmium in the safety instruction (WARNING section),
insert, and nickel-metal hydride (NI-MH).
8. On page 2, under 5. IN CASE OF TROUBLE,
complete the following changes:
A. Change the WARNING to read:
WARNING
USE ONLY MOTOROLA NICKEL-
CADMIUM (NI-CD) OR NICKEL-METAL
HYDRIDE (NI-MH) BATTERIES WITH
THIS CHARGER.
B. Before 6. CIRCUIT DESCRIPTION, add the
following:
BLINKING CHARGER INDICATOR LIGHTS
The battery circuitry has been designed to
regulate the rapid charge rates to provide
optimum performance and maximum cycle life.
In some cases, new batteries and batteries that
have had periods of prolonged storage may
require more than a2-hour rapid-charge cycle to
achieve rated capacity. SABER™ (MX1000)
chargers have amaximum 2-hour rapid-charge
fault mode and will time-out if rapid-rate
charging has not been completed prior to two
hours.
If this condition occurs, the charger's red
indicator lights will flash. When this happens,
remove the battery from the charger, allow the
battery temperature to cool, and then re-insert in
the charger to complete the charge cycle. The
period of time required for the battery to reach
normal temperatures should not exceed one
hour. If the problem with flashing lights continues
to exist, afault has been detected in the battery
or charger, indicating repair or replacement.
9. On pages 2and 3, under 6. CIRCUIT
DESCRIPTION, add the following:
A. On page 3, Table 1. Normal RC Values, and in
the first box under battery type, add NTN7014A.
B. In Table 2. Charging Rates, and in the first box
under battery type, add NTN7014A.

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(MA) MOTOROLA
1. INTRODUCTION
The Model NTN4734A (115Vac) and NTN4786A
(220Vac) Single-Unit Rapid-Charge Battery Chargers are
accessory items for the SABER Series "Handie-Talkie"
Portable Radios using rechargeable nickel-cadmium
batteries. The chargers are approved for use with the
following rapid-charge batteries:
@NTN4537A, and NTN4592A Light-Capacity
@NTN4819A, and NTN4820A
Medium-Light-Capacity
@NTN4538A, NTN4593A, NTN4657A, and
NTN4671A Medium-Capacity
@NTN4539A, and NTN4594A High-Capacity
@NTN4595A, NTN4596A, and NTN4992A
Ultra-High-Capacity
WARNING
DO NOT DISCARD BATTERIES IN FIRE; THEY MAY
EXPLODE.
2. SPECIFICATIONS
3. DESCRIPTION
The single-unit rapid chargers are constant-current
devices which provide two different charge rates: aone-
hour rate, and a16-hour rate. Arapid-charge nickel-cad-
mium battery is charged initially at the one-hour rate, after
which the charging rate automatically reduces to the 16-
hour rate. The battery may be left in the battery charger
indefinitely without any resultant harm.
The NTN4734A Charger operates from a115Vac 50/
60Hz power source, whereas the NTN4786A Charger
operates from a220Vac 50/60Hz power source. Aline
voltage selector (placement of ac fuse F1 and receptacle)
at the bottom of the unit permits either charger to operate
@®,, Motorola, SABER, and Handie-Talkie are trademarks of Motorola, Inc.
©1987 by Motorola, Inc., Portable Products Division, 8000 W. Sunrise Bivd., Ft. Lauderdale, FL 33322 Printed in U.S.A. 6/87
"SABER" SERIES
"Handie-Talkie" Portable Radios
Model NTN4734A and NTN4786A
Single-Unit Rapid-Charge Battery Chargers
from a115Vac, a220Vac, or a240Vac power source. The
only difference between the two chargers is the place-
ment of the ac fuse (F1) and receptacle, and the ac plug.
IMPORTANT
SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important safety and operating
instructions.
Before using battery charger, read all instructions and
cautionary markings on (1) battery charger, (2) battery,
and (3) radio using battery.
WARNING To reduce risk of injury, charge only
Motorola nickel-cadmium type rechargeable batteries
listed. Other types of batteries may burst, causing per-
sonal injury and damage.
Do not expose charger to rain or snow.
Use of an attachment not recommended or soid by
Motorola may result in arisk of fire, electric shock, or
injury to persons.
To reduce risk of damage to electric plug and cord, pull
by plug rather than cord when disconnecting charger.
Make sure cord is located so that it will not be stepped
on, tripped over, or otherwise subjected to damage or
stress.
An extension cord should not be used unless abso-
lutely necessary. Use of improper extension cord could
result in arisk of fire and electric shock. If extension
cord must be used, make sure:
(1) That pins on plug of extension cord are same
number, size, and shape as those on plug on
charger;
(2) That extension cord is properly wired and in good
electrical condition; and
(3) The cord size is 18AWG for lengths up to 100ft., and
16AWG for lengths up to 150 ft.
Do not operate charger with damaged cord or plug
-
replace them immediately.
Do not operate charger if it has received asharp blow,
been dropped, or otherwise damaged in any way; take
it to aqualified serviceman.
Do not disassemble charger; take it to aqualified ser-
viceman when service or repair is required. Incorrect
reassembly may result in arisk of electric shock or fire.
To reduce risk of electric shock, unplug charger from
outlet before attempting any maintenance or cleaning.
Turning off controls will not reduce this risk.
INPUT POWER: 115Vac, 220Vac, 240Vac; 50/60Hz
SIZE: 6.5" x7.75" x3.5"
WEIGHT: (Charger With Cord) 4.0 Ibs.
RAPID CHARGE TIME: Approximately 1hour
OPERATING TEMPERATURE RANGE: 0°C
-
50°C
RAPID-CHARGE TEMPERATURE WINDOW: 10°C
-
40°C
Instruction Manual
68P81106C65-00
(MA) MOTOROLA
1. INTRODUCTION
The Model NTN4734A (115Vac) and NTN4786A
(220Vac) Single-Unit Rapid-Charge Battery Chargers are
accessory items for the SABER Series "Handie-Talkie"
Portable Radios using rechargeable nickel-cadmium
batteries. The chargers are approved for use with the
following rapid-charge batteries:
@NTN4537A, and NTN4592A Light-Capacity
@NTN4819A, and NTN4820A
Medium-Light-Capacity
@NTN4538A, NTN4593A, NTN4657A, and
NTN4671A Medium-Capacity
@NTN4539A, and NTN4594A High-Capacity
@NTN4595A, NTN4596A, and NTN4992A
Ultra-High-Capacity
WARNING
DO NOT DISCARD BATTERIES IN FIRE; THEY MAY
EXPLODE.
2. SPECIFICATIONS
3. DESCRIPTION
The single-unit rapid chargers are constant-current
devices which provide two different charge rates: aone-
hour rate, and a16-hour rate. Arapid-charge nickel-cad-
mium battery is charged initially at the one-hour rate, after
which the charging rate automatically reduces to the 16-
hour rate. The battery may be left in the battery charger
indefinitely without any resultant harm.
The NTN4734A Charger operates from a115Vac 50/
60Hz power source, whereas the NTN4786A Charger
operates from a220Vac 50/60Hz power source. Aline
voltage selector (placement of ac fuse F1 and receptacle)
at the bottom of the unit permits either charger to operate
@®,, Motorola, SABER, and Handie-Talkie are trademarks of Motorola, Inc.
©1987 by Motorola, Inc., Portable Products Division, 8000 W. Sunrise Bivd., Ft. Lauderdale, FL 33322 Printed in U.S.A. 6/87
"SABER" SERIES
"Handie-Talkie" Portable Radios
Model NTN4734A and NTN4786A
Single-Unit Rapid-Charge Battery Chargers
from a115Vac, a220Vac, or a240Vac power source. The
only difference between the two chargers is the place-
ment of the ac fuse (F1) and receptacle, and the ac plug.
IMPORTANT
SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important safety and operating
instructions.
Before using battery charger, read all instructions and
cautionary markings on (1) battery charger, (2) battery,
and (3) radio using battery.
WARNING To reduce risk of injury, charge only
Motorola nickel-cadmium type rechargeable batteries
listed. Other types of batteries may burst, causing per-
sonal injury and damage.
Do not expose charger to rain or snow.
Use of an attachment not recommended or soid by
Motorola may result in arisk of fire, electric shock, or
injury to persons.
To reduce risk of damage to electric plug and cord, pull
by plug rather than cord when disconnecting charger.
Make sure cord is located so that it will not be stepped
on, tripped over, or otherwise subjected to damage or
stress.
An extension cord should not be used unless abso-
lutely necessary. Use of improper extension cord could
result in arisk of fire and electric shock. If extension
cord must be used, make sure:
(1) That pins on plug of extension cord are same
number, size, and shape as those on plug on
charger;
(2) That extension cord is properly wired and in good
electrical condition; and
(3) The cord size is 18AWG for lengths up to 100ft., and
16AWG for lengths up to 150 ft.
Do not operate charger with damaged cord or plug
-
replace them immediately.
Do not operate charger if it has received asharp blow,
been dropped, or otherwise damaged in any way; take
it to aqualified serviceman.
Do not disassemble charger; take it to aqualified ser-
viceman when service or repair is required. Incorrect
reassembly may result in arisk of electric shock or fire.
To reduce risk of electric shock, unplug charger from
outlet before attempting any maintenance or cleaning.
Turning off controls will not reduce this risk.
INPUT POWER: 115Vac, 220Vac, 240Vac; 50/60Hz
SIZE: 6.5" x7.75" x3.5"
WEIGHT: (Charger With Cord) 4.0 Ibs.
RAPID CHARGE TIME: Approximately 1hour
OPERATING TEMPERATURE RANGE: 0°C
-
50°C
RAPID-CHARGE TEMPERATURE WINDOW: 10°C
-
40°C
Instruction Manual
68P81106C65-00

4. OPERATION
After aperiod of use, abattery normally requires ap-
proximately one hour of rapid charging. The radio should
be turned off while attached to abattery being recharged.
Place the charger in operation as follows:
a. Make sure that the line voltage selector (fuse F1 and
receptacle) is placed in the proper position to accept
either 115Vac, 220Vac, or 240Vac as applicable. If the de-
sired Vac is not displayed in the receptacle's window,
refer to the exploded view at the back of this manual, and:
(1) Remove the fuse drawer (item 22) from the ac
connector (item 2).
(2) Remove the voltage selector insert (item 21) from the
fuse drawer.
(3) Replace the voltage selector insert in the fuse drawer
with the desired Vac showing through the fuse drawer's
slotted window.
(4) Replace the fuse drawer in the ac connector.
b. Connect the ac cord (jack J1 end) to the battery
charger.
c. Connect the ac cord (plug P1 end) to the proper ac re-
ceptacle. The battery charger performs aself test, which
is evidenced first by all four LEDs in the display simultane-
ously turning on and off, and then by each of the four
LEDs in sequence (yellow, orange, red, green) turning on
and off.
d. Insert the battery, with or without the radio attached,
into the charger compartment and seat it firmly to assure
that proper contact has been made. Again, each of the
LEDs turns on and off, then the red Charging LED turns
on to indicate that the battery is being rapid charged.
NOTE
(1) If the yellow Stand-By LED illuminates instead of the
red LED, the battery is either too hot or too cold to
be rapid-charged. Refer to "Circuit Description" for
details.
(2) If the orange LED flashes, aproblem exists with the
battery. TRY RESEATING THE BATTERY. Refer to
"Circuit Description" for details.
e. Allow approximately one hour for batteries to charge.
NOTE
When arapid-charge battery reaches full charge, the red
Charging LED turns off and the green Complete LED
turns on.
5. INCASE OF TROUBLE
Before requesting service, refer to the following
table for possible remedies.
WARNING
USE ONLY MOTOROLA NICKEL-CADMIUM (NI-CD)
BATTERIES WITH THIS CHARGER.
Condition
(Refer to Figure 1Remedy
for LED location)
Red Charging LED does notlight ¢Check battery and charger
when battery is inserted in pocket contacts for dirt, grease, or
foreign material.
Wipe with asoft cloth.
Orange LED flashes. Try reseating battery.
If alight-capacity battery with
aradio attached is being
charged and the radiois
turned on, turn the radio
off, then reseat battery.
Check battery and charger
contacts for dirt, grease,
or foreign material.
Wipe with asoft cloth.
Try another battery. If problem
goes away, the problem is
with the first battery.
Yellow Stand-By LED lights eBattery is either too hot or
too cold to be rapid charged.
No LEDs light Make sure charger is plugged in.
Check to see if charger
has afuse.
Check to see if fuse
is blown.
GREEN YELLOW
RED ORANGE
Figure 1. Front Panel LED Locations
6. CIRCUIT DESCRIPTION
(Refer to the schematic diagram)
a. General
The mechanical placement of fuse Fand its recepta-
cle select the primary windings of transformer T1 for the
115Vac, 220Vac, or 240Vac input source. Operating B+
is developed from astep-down transformer (T1), with a
fused primary and afused secondary, driving aconven-
tional full-wave bridge rectifier (CR1-CR4). B+ is applied
to the display board LEDs, to charging circuit transistors
2
4. OPERATION
After aperiod of use, abattery normally requires ap-
proximately one hour of rapid charging. The radio should
be turned off while attached to abattery being recharged.
Place the charger in operation as follows:
a. Make sure that the line voltage selector (fuse F1 and
receptacle) is placed in the proper position to accept
either 115Vac, 220Vac, or 240Vac as applicable. If the de-
sired Vac is not displayed in the receptacle's window,
refer to the exploded view at the back of this manual, and:
(1) Remove the fuse drawer (item 22) from the ac
connector (item 2).
(2) Remove the voltage selector insert (item 21) from the
fuse drawer.
(3) Replace the voltage selector insert in the fuse drawer
with the desired Vac showing through the fuse drawer's
slotted window.
(4) Replace the fuse drawer in the ac connector.
b. Connect the ac cord (jack J1 end) to the battery
charger.
c. Connect the ac cord (plug P1 end) to the proper ac re-
ceptacle. The battery charger performs aself test, which
is evidenced first by all four LEDs in the display simultane-
ously turning on and off, and then by each of the four
LEDs in sequence (yellow, orange, red, green) turning on
and off.
d. Insert the battery, with or without the radio attached,
into the charger compartment and seat it firmly to assure
that proper contact has been made. Again, each of the
LEDs turns on and off, then the red Charging LED turns
on to indicate that the battery is being rapid charged.
NOTE
(1) If the yellow Stand-By LED illuminates instead of the
red LED, the battery is either too hot or too cold to
be rapid-charged. Refer to "Circuit Description" for
details.
(2) If the orange LED flashes, aproblem exists with the
battery. TRY RESEATING THE BATTERY. Refer to
"Circuit Description" for details.
e. Allow approximately one hour for batteries to charge.
NOTE
When arapid-charge battery reaches full charge, the red
Charging LED turns off and the green Complete LED
turns on.
5. INCASE OF TROUBLE
Before requesting service, refer to the following
table for possible remedies.
WARNING
USE ONLY MOTOROLA NICKEL-CADMIUM (NI-CD)
BATTERIES WITH THIS CHARGER.
Condition
(Refer to Figure 1Remedy
for LED location)
Red Charging LED does notlight ¢Check battery and charger
when battery is inserted in pocket contacts for dirt, grease, or
foreign material.
Wipe with asoft cloth.
Orange LED flashes. Try reseating battery.
If alight-capacity battery with
aradio attached is being
charged and the radiois
turned on, turn the radio
off, then reseat battery.
Check battery and charger
contacts for dirt, grease,
or foreign material.
Wipe with asoft cloth.
Try another battery. If problem
goes away, the problem is
with the first battery.
Yellow Stand-By LED lights eBattery is either too hot or
too cold to be rapid charged.
No LEDs light Make sure charger is plugged in.
Check to see if charger
has afuse.
Check to see if fuse
is blown.
GREEN YELLOW
RED ORANGE
Figure 1. Front Panel LED Locations
6. CIRCUIT DESCRIPTION
(Refer to the schematic diagram)
a. General
The mechanical placement of fuse Fand its recepta-
cle select the primary windings of transformer T1 for the
115Vac, 220Vac, or 240Vac input source. Operating B+
is developed from astep-down transformer (T1), with a
fused primary and afused secondary, driving aconven-
tional full-wave bridge rectifier (CR1-CR4). B+ is applied
to the display board LEDs, to charging circuit transistors
2

Q1, Q3, and Q15, and to a5-volt regulator (U1), which
provides power to the microcomputer (U3).
All of the timing, monitoring, and sensing of the circuits
is performed by the microcomputer (U3). Upon power-up,
with no battery inserted, the microcomputer performs a
self check of its read-only memory (ROM), random-ac-
cess memory (RAM), and timer. Next, the microcomputer
momentarily turns on all four LEDs via U3, pins 33 thru
36. Then, the microcomputer momentarily turns on each
LED in the sequence: yellow, orange, red, and green.
Completing the self check with no problems encountered,
the microcomputer turns all the LEDs off.
After the microcomputer self check has been com-
pleted, the microcomputer monitors the capacity coding
resistor (RC) RC IN line (U3, pin 23), and the thermistor
(RT) TEMP IN line (U3, pin 24) for battery indications.
When abattery is inserted, the microcomputer again
momentarily turns on each LED in the sequence: yellow,
orange, red, and green.
Next, U3 checks the RC and RT in the battery to deter-
mine charging conditions. If the value of the battery's RC
is abnormal (see Table 1), the microcomputer senses a
problem and, via U3, pin 36, keys the orange LED to flash
on and off. If the RC value is normal, the microcomputer
proceeds to monitor the battery's temperature.
Table 1. Normal RC Values
If the battery temperature is outside the temperature
window (below 10°C (3.33Vdc on the RT contact) or
above 40°C (1.87Vdc on the RT contact), the microcom-
puter lights the yellow Stand-By LED and waits for the
battery's temperature to fall within the temperature win-
dow. Once this occurs, the microcomputer turns off the
yellow LED (if turned on at all) and turns on the charging
circuits; these circuits condition the battery by charging it
at 600mA for 30 seconds. At the end of 30 seconds, the
microcomputer checks the battery voltage via the VCHG
IN line at U3, pin 22. The voltage should be between 7Vdc
and 11Vdc. If the voltage is outside this range, the
microcomputer senses the battery problem and indicates
it by flashing the orange LED (RESEAT/REPLACE THE
BATTERY).
b. Charging Circuits
Following the power-up, microcomputer self check,
battery installation, and normal battery RC, RT, and vol-
tage checks, rapid charging begins. There are four rapid-
charge rates as indicated by the battery RC (see Table 2).
Table 2. Charge Rates
CHARGE RATE (mA)
BATTERY TYPE
RAPID TRICKLE
600 50
NTN4537A, NTN4592A
NTN4819A, NTN4820A 780
NTN4538A, NTN4593A, 1080 90
NTN4657A, NTN4671A
NTN4539A, NTN4594A 1500 125
NTN4595A, NTN4596A, 1500 10
NTN4992A
65
The signal at pin 5of op amp U2B (voltage drop across
resistor R6) is amplified by U2B. The op amp's output (pin
7), sensed by the microcomputer on the CURRENT iN
line (U3, pin 21), is used by the microcomputer to select
the resistance (R23 thru R33) required to achieve the
proper voltage level at the input (pin 3) of op amp U2A.
The resultant output at U2A, pin 1, drives transistor Q7,
which drives transistors Q3 and Q1.
The microcomputer, via ahigh at U3, pin 29, turns on
switching transistor Q8, achieving alower emitter resis-
tance at Q7 for the rapid-charge condition. At the same
time U3, pin 34, goes high to turn on adisplay board driver
transistor, which illuminates the red Charging LED. As
the battery rapid charges, the microcomputer monitors
the current (U3, pin 21) every 30 seconds and makes ad-
justments (selection of resistors R23 thru R33) as neces-
sary to maintain constant charging current.
The microcomputer monitors the battery voltage on
the VCHG IN line (U3, pin 22). Should this voltage ap-
proach 11Vdc, the microcomputer will cut back the charg-
ing current and maintain aconstant voltage charge.
RCVALUE BATTERY TYPE
Every three minutes, the microcomputer stops the
charging current and checks the temperature of the bat-
tery via the TEMP IN line (U3, pin 24). As the battery
reaches full charge in the rapid-charge mode, the battery
temperature rises. When the rate of increase within the
three minutes exceeds 1.6°C (8OmV), U3, pin 29, goes
low, Q8 turns off, and the charger switches to the trickle-
charge mode. At the same time, U3, pin 34, goes low to
turn off the red Charging LED, and U3, pin 35, goes high
to turn on adriver transistor and the green Complete
LED. In any temperature environment, should the battery
temperature reach 45°C, the charger will switch to the
trickle-charge mode.
2.4k0, NTN4537A, NTN4592A
§.1kO NTN4538A, NTN4593A, NTN4657A, NTN4671A
10k. NTN4539A, NTN4594A
18k0, NTN4595A, NTN4596A, NTN4992A
33kN NTN4819A, NTN4820A
In the trickle-charge (Complete) mode, as in the rapid-
charge mode, the microcomputer monitors the charging
current and makes the necessary adjustments every 30
seconds. The trickle current charge rates are shown in
Table 2.
Whenever ahigh- or ultra-high-capacity battery is in-
stalled, transistors Q17 and @15 are turned on, via alogi-
cal high from U3, pin 32. Q17 and Q15 pull charging
current from transistor Q1 through parallel resistors R47
and R60.
3
Q1, Q3, and Q15, and to a5-volt regulator (U1), which
provides power to the microcomputer (U3).
All of the timing, monitoring, and sensing of the circuits
is performed by the microcomputer (U3). Upon power-up,
with no battery inserted, the microcomputer performs a
self check of its read-only memory (ROM), random-ac-
cess memory (RAM), and timer. Next, the microcomputer
momentarily turns on all four LEDs via U3, pins 33 thru
36. Then, the microcomputer momentarily turns on each
LED in the sequence: yellow, orange, red, and green.
Completing the self check with no problems encountered,
the microcomputer turns all the LEDs off.
After the microcomputer self check has been com-
pleted, the microcomputer monitors the capacity coding
resistor (RC) RC IN line (U3, pin 23), and the thermistor
(RT) TEMP IN line (U3, pin 24) for battery indications.
When abattery is inserted, the microcomputer again
momentarily turns on each LED in the sequence: yellow,
orange, red, and green.
Next, U3 checks the RC and RT in the battery to deter-
mine charging conditions. If the value of the battery's RC
is abnormal (see Table 1), the microcomputer senses a
problem and, via U3, pin 36, keys the orange LED to flash
on and off. If the RC value is normal, the microcomputer
proceeds to monitor the battery's temperature.
Table 1. Normal RC Values
If the battery temperature is outside the temperature
window (below 10°C (3.33Vdc on the RT contact) or
above 40°C (1.87Vdc on the RT contact), the microcom-
puter lights the yellow Stand-By LED and waits for the
battery's temperature to fall within the temperature win-
dow. Once this occurs, the microcomputer turns off the
yellow LED (if turned on at all) and turns on the charging
circuits; these circuits condition the battery by charging it
at 600mA for 30 seconds. At the end of 30 seconds, the
microcomputer checks the battery voltage via the VCHG
IN line at U3, pin 22. The voltage should be between 7Vdc
and 11Vdc. If the voltage is outside this range, the
microcomputer senses the battery problem and indicates
it by flashing the orange LED (RESEAT/REPLACE THE
BATTERY).
b. Charging Circuits
Following the power-up, microcomputer self check,
battery installation, and normal battery RC, RT, and vol-
tage checks, rapid charging begins. There are four rapid-
charge rates as indicated by the battery RC (see Table 2).
Table 2. Charge Rates
CHARGE RATE (mA)
BATTERY TYPE
RAPID TRICKLE
600 50
NTN4537A, NTN4592A
NTN4819A, NTN4820A 780
NTN4538A, NTN4593A, 1080 90
NTN4657A, NTN4671A
NTN4539A, NTN4594A 1500 125
NTN4595A, NTN4596A, 1500 10
NTN4992A
65
The signal at pin 5of op amp U2B (voltage drop across
resistor R6) is amplified by U2B. The op amp's output (pin
7), sensed by the microcomputer on the CURRENT iN
line (U3, pin 21), is used by the microcomputer to select
the resistance (R23 thru R33) required to achieve the
proper voltage level at the input (pin 3) of op amp U2A.
The resultant output at U2A, pin 1, drives transistor Q7,
which drives transistors Q3 and Q1.
The microcomputer, via ahigh at U3, pin 29, turns on
switching transistor Q8, achieving alower emitter resis-
tance at Q7 for the rapid-charge condition. At the same
time U3, pin 34, goes high to turn on adisplay board driver
transistor, which illuminates the red Charging LED. As
the battery rapid charges, the microcomputer monitors
the current (U3, pin 21) every 30 seconds and makes ad-
justments (selection of resistors R23 thru R33) as neces-
sary to maintain constant charging current.
The microcomputer monitors the battery voltage on
the VCHG IN line (U3, pin 22). Should this voltage ap-
proach 11Vdc, the microcomputer will cut back the charg-
ing current and maintain aconstant voltage charge.
RCVALUE BATTERY TYPE
Every three minutes, the microcomputer stops the
charging current and checks the temperature of the bat-
tery via the TEMP IN line (U3, pin 24). As the battery
reaches full charge in the rapid-charge mode, the battery
temperature rises. When the rate of increase within the
three minutes exceeds 1.6°C (8OmV), U3, pin 29, goes
low, Q8 turns off, and the charger switches to the trickle-
charge mode. At the same time, U3, pin 34, goes low to
turn off the red Charging LED, and U3, pin 35, goes high
to turn on adriver transistor and the green Complete
LED. In any temperature environment, should the battery
temperature reach 45°C, the charger will switch to the
trickle-charge mode.
2.4k0, NTN4537A, NTN4592A
§.1kO NTN4538A, NTN4593A, NTN4657A, NTN4671A
10k. NTN4539A, NTN4594A
18k0, NTN4595A, NTN4596A, NTN4992A
33kN NTN4819A, NTN4820A
In the trickle-charge (Complete) mode, as in the rapid-
charge mode, the microcomputer monitors the charging
current and makes the necessary adjustments every 30
seconds. The trickle current charge rates are shown in
Table 2.
Whenever ahigh- or ultra-high-capacity battery is in-
stalled, transistors Q17 and @15 are turned on, via alogi-
cal high from U3, pin 32. Q17 and Q15 pull charging
current from transistor Q1 through parallel resistors R47
and R60.
3

c. Reset Circuit
Integrated circuit U5 is a"watchdog" timer. At least
once every second, apositive signal from U3, pin 31, is
received at U5, pin 2. This signal keeps Q18 from reset-
ting the microcomputer. If aproblem occurs in the micro-
computer, such as the microcomputer's internal timer
ceasing to function correctly, the microcomputer stops
sending the signal at U3, pin 31. As aresult, the following
sequence occurs: U5, pin 3, goes low, turning off Q19.
This turns on Q18, which resets the microcomputer. When
the microcomputer is reset, Q14 is turned on, pulling U5,
pin 2, low, and resetting the U5 timer. Resetting the timer
causes U5, pin 3, to go high, which turns on Q19, turns
off Q18, and pulls the microcomputer out of reset via U3,
pin 2.
d. Interrupt Circuit
Transistor Q4 is normally turned on. But, if the battery
is removed, or if "contact bounce" occurs, the voltage at
the collector of Q1 goes high, which turns off Q4 and pulls
U3, pin 3, low. This low signal interrupts U3's internal pro-
cessor and keys the microcomputer to check the battery's
RC and RT. If the interrupt was just contact bounce, then
the microprocessor will continue its normal function. If the
interrupt was aremoved battery, the microcomputer
blanks the display. If the battery is open, the microcompu-
ter senses aprobiem and, via U3, pin 36, keys the orange
LED to flash on and off.
7. MAINTENANCE
a. Fuse
If the charger does not operate, check fuses and
F2, and replace if necessary. If the replaced fuse "blows,"
check for short circuits in the transformer, charger circuits,
and transistor Q1.
b. Contacts
If the red Charging LED does not turn on with aradio
or battery inserted into the pocket, check the contacts of
the battery or charger for dirt, grease, or other foreign ma-
terials. Clean the contacts, if necessary, with asoft cloth.
CAUTION
THE FOLLOWING MAINTENANCE PROCEDURES
SHOULD ONLY BE PERFORMED BY QUALIFIED
SERVICE PERSONNEL:
c. Voltage Measurements
The de voltage measurements table below lists the vol-
tage levels that should be present with varying batteries
and operating conditions.
DC VOLTAGE MEASUREMENTS
BATTERY BATTERY at Q7 Q15 U2 U3 CHARGING
CURRENT
TYPE CONDITION IN 2
|
21 224 23] 24° 297 40 (mA)
B+
NO
BATTERY 17.0 17.0 8.1 0.2 017.0 17.0 048 2.8 49 49 049
RAPID
NTN4537A, NTN4592A 15.5 148 102 0.7 0.1 15.5 15.5 32 32 19 48 1.94 3.5 0.5 27 3.4 49
CHARGE
CHARGE
NTN4597A, NTN4592A, 16.7 16.2 9.1 1.0 0.4 16.7 16.7 03 03 0.1 48 0.14 3.1 0.2 2.5 049
COMPLETE
NTN4538A, NTN4593A, RAPID
14.7 14.0 10.7 0.8 0.2 147 14.7 64 64 3.5 48 3.55 37 1.0 28 3.4 49 1080
NTN4657A, NTN4671A CHARGE
NTN4538A, NTN4593A, CHARGE
16.7 16.1 8.7 1.0 0.4 16.7 16.7 05 05 0.3 48 0.29 3.0 28 2.6 049
NTN4657A, NTN4671A COMPLETE
NTN4539A,NTN4594A
RAPID
14.0 13.4 105 0.8 0.2 111 10.3 90 90 5.0 48 4,93 3.6 1.6 2.9 34 49 1500
CHARGE
NTN4S39A,NTN4594A
CHARGE
COMPLETE
16.6 16.0 8.9 1.0 0.4 16.6 16.6 07 07 0.4 48 0.36 29 0.9 2.6 049 125
000
60
50
90
NOTES:
1. ALL VOLTAGES REFERENCED TO CHARGER GROUND.
2, VOLTAGES AT PIN DESIGNATED
*WLL VARY WITH THE VOLTAGE OF THE BATTERY.
3, VOLTAGES AT PIN DESIGNATED
**
WILL VARY WITH THE TEMPERATURE OF THE BATTERY.
4
c. Reset Circuit
Integrated circuit U5 is a"watchdog" timer. At least
once every second, apositive signal from U3, pin 31, is
received at U5, pin 2. This signal keeps Q18 from reset-
ting the microcomputer. If aproblem occurs in the micro-
computer, such as the microcomputer's internal timer
ceasing to function correctly, the microcomputer stops
sending the signal at U3, pin 31. As aresult, the following
sequence occurs: U5, pin 3, goes low, turning off Q19.
This turns on Q18, which resets the microcomputer. When
the microcomputer is reset, Q14 is turned on, pulling U5,
pin 2, low, and resetting the U5 timer. Resetting the timer
causes U5, pin 3, to go high, which turns on Q19, turns
off Q18, and pulls the microcomputer out of reset via U3,
pin 2.
d. Interrupt Circuit
Transistor Q4 is normally turned on. But, if the battery
is removed, or if "contact bounce" occurs, the voltage at
the collector of Q1 goes high, which turns off Q4 and pulls
U3, pin 3, low. This low signal interrupts U3's internal pro-
cessor and keys the microcomputer to check the battery's
RC and RT. If the interrupt was just contact bounce, then
the microprocessor will continue its normal function. If the
interrupt was aremoved battery, the microcomputer
blanks the display. If the battery is open, the microcompu-
ter senses aprobiem and, via U3, pin 36, keys the orange
LED to flash on and off.
7. MAINTENANCE
a. Fuse
If the charger does not operate, check fuses and
F2, and replace if necessary. If the replaced fuse "blows,"
check for short circuits in the transformer, charger circuits,
and transistor Q1.
b. Contacts
If the red Charging LED does not turn on with aradio
or battery inserted into the pocket, check the contacts of
the battery or charger for dirt, grease, or other foreign ma-
terials. Clean the contacts, if necessary, with asoft cloth.
CAUTION
THE FOLLOWING MAINTENANCE PROCEDURES
SHOULD ONLY BE PERFORMED BY QUALIFIED
SERVICE PERSONNEL:
c. Voltage Measurements
The de voltage measurements table below lists the vol-
tage levels that should be present with varying batteries
and operating conditions.
DC VOLTAGE MEASUREMENTS
BATTERY BATTERY at Q7 Q15 U2 U3 CHARGING
CURRENT
TYPE CONDITION IN 2
|
21 224 23] 24° 297 40 (mA)
B+
NO
BATTERY 17.0 17.0 8.1 0.2 017.0 17.0 048 2.8 49 49 049
RAPID
NTN4537A, NTN4592A 15.5 148 102 0.7 0.1 15.5 15.5 32 32 19 48 1.94 3.5 0.5 27 3.4 49
CHARGE
CHARGE
NTN4597A, NTN4592A, 16.7 16.2 9.1 1.0 0.4 16.7 16.7 03 03 0.1 48 0.14 3.1 0.2 2.5 049
COMPLETE
NTN4538A, NTN4593A, RAPID
14.7 14.0 10.7 0.8 0.2 147 14.7 64 64 3.5 48 3.55 37 1.0 28 3.4 49 1080
NTN4657A, NTN4671A CHARGE
NTN4538A, NTN4593A, CHARGE
16.7 16.1 8.7 1.0 0.4 16.7 16.7 05 05 0.3 48 0.29 3.0 28 2.6 049
NTN4657A, NTN4671A COMPLETE
NTN4539A,NTN4594A
RAPID
14.0 13.4 105 0.8 0.2 111 10.3 90 90 5.0 48 4,93 3.6 1.6 2.9 34 49 1500
CHARGE
NTN4S39A,NTN4594A
CHARGE
COMPLETE
16.6 16.0 8.9 1.0 0.4 16.6 16.6 07 07 0.4 48 0.36 29 0.9 2.6 049 125
000
60
50
90
NOTES:
1. ALL VOLTAGES REFERENCED TO CHARGER GROUND.
2, VOLTAGES AT PIN DESIGNATED
*WLL VARY WITH THE VOLTAGE OF THE BATTERY.
3, VOLTAGES AT PIN DESIGNATED
**
WILL VARY WITH THE TEMPERATURE OF THE BATTERY.
4

TO DISPLAY BOARD TO TRANSFORMER TI
"aN
GRN GRN
VIEWED FROM COMPONENT SIDE
J3
LOGIC BOARD CONTACT BOARD
IARGE R
DCKET
OL-CEPF-I7311-0
CIRCUIT BOARD DETAIL
TO DISPLAY BOARD TO TRANSFORMER TI
"aN
GRN GRN
VIEWED FROM COMPONENT SIDE
J3
LOGIC BOARD CONTACT BOARD
IARGE R
DCKET
OL-CEPF-I7311-0
CIRCUIT BOARD DETAIL

Electrical Parts List TPLF-3447-A
R47 1705261K15 12 +10%; 5W
R48 061 1009C49 tk
Not Used
R49, 50
R51 0611009C49 ik
R52 Not Used
R53 1705530L07 100 +10%; 2W
R54, 55 0611009C73 10k
R56 0611009C49 1k
R57 Not Used
R58 0611009C73 10k
R59 0611009C97 100k
R60 1705261K15 12+ 10%; 5W
VARISTOR:
RV1 0605220M01 35V
TRANSFORMER:
T1 2505578Q01 Transformer
CIRCUIT MODULE: See Note |
5184320A47 5V Regulator
U2 5105469E40 Dual Op Amp
U3 5105849001 Microcomputer
U4 Not Used
US 5184320A35 555 Timer
DIODE: See Note |
VR1 thru 54811034G13 Zener, 6.2V
CRYSTAL:
v1 4805664G25 4MHz
NONREFERENCED ITEMS
2805546Q02 CONNECTOR, AC
3005204R01 CORD, Line (115Vac 50/60Hz)
3005204R03 CORD, Line (220/240Vac 50/60Hz)
0105959M91 ASSEMBLY, Logic Board
8460999A40 ASSEMBLY, Display Board
REFERENCE MOTOROLA
DESCRIPTION
SYMBOL PART NO.
NOTES:
|. For optimum performance, order replacement diodes, transistors, and circuit
modules by Motorola part number only.
CAPACITOR, Fixed: uF +20%; 35V
unless stated
C1,2 2360561H19 1000
C3,4 2383441 B20 0.1
C5 2360561H19 1000
2383441B15
C7 2105529B11
ce 2383441B15
q7eF +5%;N150
C9 Not Used
C10 2305499G16 10 +10%; 16V
2383441B20 01
C12 2105457G14 .01 +30- 80%; 63V
C13 2105457G09 1000pF; 63V
C14,15 Not Used
C16 2105454G47 SOpF +5%; 63V; N150
C17 Not Used
C18 2105455G12 100pF +10%; 63V; N750
C19 2105454G47 S0pF +5%; 63V; N150
Not Used
C20, 21
C22 thru 24 2105455G12 100pF +10%; 63V; N750
DIODE: See Note |
CR1 thru4 4882525G19 Silicon, 3A; 50PIV
FUSE:
F1 400mA
6505700Q04
F2 6505214E02 5Amp
COIL, RF: unless stated
12483977B02 Choke
2,3 2482723H19 2.6uH
L4 2483977B02 Choke
TRANSISTOR:
Qi 4800869807 PNP; type M9807
Q2 Not Used
Q3, 44800869643 PNP; type M9643
Not Used
Q5,6
Q7,8 4800869642 NPN; type M9642
Q9 thru 13 Not Used
Qi4 4800869643 PNP; type M9643
Q15 4800869807 PNP; type M9807
Q16 Not Used
Q17 4800869706 NPN; type M9706
Q18, 19 4800869642 NPN; type M9642
RESISTOR, Fixed: 0+ 5%; 14W
unless stated
R1,2 Not Used
R3 0611009C29 150
R4 0611009C73 10k
R5 0610621C28 2.21k+1%
R6 1782036G18 56; 2W
R7 0610621C53 4.02k+1%
R8 0611009C97 100k
R9 0610621026
R10 0611009C97 100k
R11 061 1009C69 6.8k
R12 0610621091 10k+1%
R13 thru 15 Not Used
R16 0611009C90 51k
R17 0610621091 10k+1%
R18,19 0611009C73 10k
R20 thru 22 Not Used
R23 0610164K58 10M
R24 0610164K51 5.1M
R25 0610164K44 2.7M
R26 0610164K38 1.5M
R27 0611009B19 750k
R28 0611009D12 390k
R29 0611009D06 220k
R30 0611009C99 120k
R31 0611009C79 18k
R32 0611009C85 33k
R33 0611009C92 62k
R34 0611009C49 1k
R35 0611009C62 3.6k
R36 0611009C73 10k
R37 thru 42 Not Used
R43 0610164K38 1.5M
R44 0611009C97 100k
R45 0611009C49 1k
R46 0611009C73 10k
1
U1
2.1k+1%
6ELECTRICAL PARTS LIST
Electrical Parts List TPLF-3447-A
R47 1705261K15 12 +10%; 5W
R48 061 1009C49 tk
Not Used
R49, 50
R51 0611009C49 ik
R52 Not Used
R53 1705530L07 100 +10%; 2W
R54, 55 0611009C73 10k
R56 0611009C49 1k
R57 Not Used
R58 0611009C73 10k
R59 0611009C97 100k
R60 1705261K15 12+ 10%; 5W
VARISTOR:
RV1 0605220M01 35V
TRANSFORMER:
T1 2505578Q01 Transformer
CIRCUIT MODULE: See Note |
5184320A47 5V Regulator
U2 5105469E40 Dual Op Amp
U3 5105849001 Microcomputer
U4 Not Used
US 5184320A35 555 Timer
DIODE: See Note |
VR1 thru 54811034G13 Zener, 6.2V
CRYSTAL:
v1 4805664G25 4MHz
NONREFERENCED ITEMS
2805546Q02 CONNECTOR, AC
3005204R01 CORD, Line (115Vac 50/60Hz)
3005204R03 CORD, Line (220/240Vac 50/60Hz)
0105959M91 ASSEMBLY, Logic Board
8460999A40 ASSEMBLY, Display Board
REFERENCE MOTOROLA
DESCRIPTION
SYMBOL PART NO.
NOTES:
|. For optimum performance, order replacement diodes, transistors, and circuit
modules by Motorola part number only.
CAPACITOR, Fixed: uF +20%; 35V
unless stated
C1,2 2360561H19 1000
C3,4 2383441 B20 0.1
C5 2360561H19 1000
2383441B15
C7 2105529B11
ce 2383441B15
q7eF +5%;N150
C9 Not Used
C10 2305499G16 10 +10%; 16V
2383441B20 01
C12 2105457G14 .01 +30- 80%; 63V
C13 2105457G09 1000pF; 63V
C14,15 Not Used
C16 2105454G47 SOpF +5%; 63V; N150
C17 Not Used
C18 2105455G12 100pF +10%; 63V; N750
C19 2105454G47 S0pF +5%; 63V; N150
Not Used
C20, 21
C22 thru 24 2105455G12 100pF +10%; 63V; N750
DIODE: See Note |
CR1 thru4 4882525G19 Silicon, 3A; 50PIV
FUSE:
F1 400mA
6505700Q04
F2 6505214E02 5Amp
COIL, RF: unless stated
12483977B02 Choke
2,3 2482723H19 2.6uH
L4 2483977B02 Choke
TRANSISTOR:
Qi 4800869807 PNP; type M9807
Q2 Not Used
Q3, 44800869643 PNP; type M9643
Not Used
Q5,6
Q7,8 4800869642 NPN; type M9642
Q9 thru 13 Not Used
Qi4 4800869643 PNP; type M9643
Q15 4800869807 PNP; type M9807
Q16 Not Used
Q17 4800869706 NPN; type M9706
Q18, 19 4800869642 NPN; type M9642
RESISTOR, Fixed: 0+ 5%; 14W
unless stated
R1,2 Not Used
R3 0611009C29 150
R4 0611009C73 10k
R5 0610621C28 2.21k+1%
R6 1782036G18 56; 2W
R7 0610621C53 4.02k+1%
R8 0611009C97 100k
R9 0610621026
R10 0611009C97 100k
R11 061 1009C69 6.8k
R12 0610621091 10k+1%
R13 thru 15 Not Used
R16 0611009C90 51k
R17 0610621091 10k+1%
R18,19 0611009C73 10k
R20 thru 22 Not Used
R23 0610164K58 10M
R24 0610164K51 5.1M
R25 0610164K44 2.7M
R26 0610164K38 1.5M
R27 0611009B19 750k
R28 0611009D12 390k
R29 0611009D06 220k
R30 0611009C99 120k
R31 0611009C79 18k
R32 0611009C85 33k
R33 0611009C92 62k
R34 0611009C49 1k
R35 0611009C62 3.6k
R36 0611009C73 10k
R37 thru 42 Not Used
R43 0610164K38 1.5M
R44 0611009C97 100k
R45 0611009C49 1k
R46 0611009C73 10k
1
U1
2.1k+1%
6ELECTRICAL PARTS LIST

Z
LOGIC BOARD
R47 Rit
GRNI
BLU T1 1
26.8k OS
I
p2 (240v)
>
i
\BRN 1
Fe
yt! FI (220V)
400mA!
BLK
(COMMON}
BATTERY
BEING
CHARGED.
R60 R48
21k
wt SA {B+
CRI ACR3
PI RVI
RED Bt
100
CR2 CR4 TioooTloooTiooo
Ce c5 50 "T (REG
B+
R4 2R53 C3
+
+cls
'BATT +
10k Q3 100 REG
$3 fk\ VRI \Bt
6.2GRN u
REG 5v foc' lowe Le
B+ REG RI7 RIG
C22 REG aizl RS! B+
100 1k
10k? ?2.6uH |
RT
R46 RIO R563
10k 100k 100k L3
30 T2.6uH
cl R44 339
6.7 4.8 (00k cl 3L4
2
|OR GREATER ARE IN PICOFARADS (pF).
VR2
6.2V
06
22 VCHG IN
24 TEMP IN
=23RC IN
R43
5M
2CURRENT IN
clo U3
uC
R24, S.IM 0ToS3
R25, 2.7M
|| Tro {
R27. 750k 35B+ orc
R28, 390k 4
R29, 220k 5C7
!AA
R30, 120k 64MHz 42COMPLETE
|
R32, 33k 26 reo_2"
NOTE: 08 R36 R33. 62k 95
34 CARGNG
UNLESS OTHERWISE STATED: 10k RAPID CHARGE 29 YEL
RESISTANCES ARE IN OHMS (k=1000),
CAPACITANCES LESS THAN |ARE Ne
IN MICROFARADS (uF), AND CAPACITANCES =
TIMER VR3 5
8
267
536VRS fe) 56
6.2
R45 QI8 (REG
Ql4 tk B+ tuF
R54 R58 Rl2
10k F{Ok
R55 R5
2.2lk
6.2
VR4
39
clo
30 20
2
J2A DISPLAY BOARD
24.8.18.19R35 R3l R26, |.5M 5
REG
36k 8k
C24 4
6
P3 GRN
R34
1k
B3CBIIOGCIG-A
SCHEMATIC DIAGRAM
35 7K NICHARGING
2
27.28.30.37.38 33 33
BY
6
Z
LOGIC BOARD
R47 Rit
GRNI
BLU T1 1
26.8k OS
I
p2 (240v)
>
i
\BRN 1
Fe
yt! FI (220V)
400mA!
BLK
(COMMON}
BATTERY
BEING
CHARGED.
R60 R48
21k
wt SA {B+
CRI ACR3
PI RVI
RED Bt
100
CR2 CR4 TioooTloooTiooo
Ce c5 50 "T (REG
B+
R4 2R53 C3
+
+cls
'BATT +
10k Q3 100 REG
$3 fk\ VRI \Bt
6.2GRN u
REG 5v foc' lowe Le
B+ REG RI7 RIG
C22 REG aizl RS! B+
100 1k
10k? ?2.6uH |
RT
R46 RIO R563
10k 100k 100k L3
30 T2.6uH
cl R44 339
6.7 4.8 (00k cl 3L4
2
|OR GREATER ARE IN PICOFARADS (pF).
VR2
6.2V
06
22 VCHG IN
24 TEMP IN
=23RC IN
R43
5M
2CURRENT IN
clo U3
uC
R24, S.IM 0ToS3
R25, 2.7M
|| Tro {
R27. 750k 35B+ orc
R28, 390k 4
R29, 220k 5C7
!AA
R30, 120k 64MHz 42COMPLETE
|
R32, 33k 26 reo_2"
NOTE: 08 R36 R33. 62k 95
34 CARGNG
UNLESS OTHERWISE STATED: 10k RAPID CHARGE 29 YEL
RESISTANCES ARE IN OHMS (k=1000),
CAPACITANCES LESS THAN |ARE Ne
IN MICROFARADS (uF), AND CAPACITANCES =
TIMER VR3 5
8
267
536VRS fe) 56
6.2
R45 QI8 (REG
Ql4 tk B+ tuF
R54 R58 Rl2
10k F{Ok
R55 R5
2.2lk
6.2
VR4
39
clo
30 20
2
J2A DISPLAY BOARD
24.8.18.19R35 R3l R26, |.5M 5
REG
36k 8k
C24 4
6
P3 GRN
R34
1k
B3CBIIOGCIG-A
SCHEMATIC DIAGRAM
35 7K NICHARGING
2
27.28.30.37.38 33 33
BY
6

LB
19
11
10
13
14
16
18
20
TPLF-3448-AElectrical Parts List
ITEM MOTOROLA
NO. PART NO.
DESCRIPTION
See Note CORD, Line
See Note CONNECTOR, AC
0305199R02 SCREW, Cutting, Phil Pan Hd;
#10-16 x.625" (4 req'd)
7505870R01 FOOT (4 req'd)
1505556Q01 BASE
See Note TRANSFORMER (71)
0305199R01 SCREW, Cutting, Phil Pan Hd
#10-16 x1.625" (4 req'd)
1505557Q01 HOUSING
1305679001 ESCUTCHEON
10 HEAT SINK (part of item 13)
11 CONNECTOR, Header, 6-Position (part of item 13)
12 CONNECTOR, 6-Position (part of item 17)
13 See Note ASSEMBLY, Logic Board
(includes items 10, 11, 14, 15, and 16)
14 PRINTED CIRCUIT BOARD, Contact
(part of item 13)
15 CONTACT, (4 reqd) (part of item 13)
16 CABLE, Flexible (part of item 13)
17 See Note ASSEMBLY, Display Board (includes item 12)
18 7505083E08 PAD
19 7505641 N03 PAD (2 req'd)
4210217A26 TIE WRAP (2 req'd
21 INSERT, Voltage (part of item 22)
22 2805245901 DRAWER, Fuse (includes item 21)
23 1405209L09 INSULATOR (4 reqd)
2
3
4
5
6
7
8
CEPF-17308-A
8
NOTE: Refer to Electrical Parts List for part number and description.
EXPLODED VIEW PARTS LIST AND DIAGRAM
LB
19
11
10
13
14
16
18
20
TPLF-3448-AElectrical Parts List
ITEM MOTOROLA
NO. PART NO.
DESCRIPTION
See Note CORD, Line
See Note CONNECTOR, AC
0305199R02 SCREW, Cutting, Phil Pan Hd;
#10-16 x.625" (4 req'd)
7505870R01 FOOT (4 req'd)
1505556Q01 BASE
See Note TRANSFORMER (71)
0305199R01 SCREW, Cutting, Phil Pan Hd
#10-16 x1.625" (4 req'd)
1505557Q01 HOUSING
1305679001 ESCUTCHEON
10 HEAT SINK (part of item 13)
11 CONNECTOR, Header, 6-Position (part of item 13)
12 CONNECTOR, 6-Position (part of item 17)
13 See Note ASSEMBLY, Logic Board
(includes items 10, 11, 14, 15, and 16)
14 PRINTED CIRCUIT BOARD, Contact
(part of item 13)
15 CONTACT, (4 reqd) (part of item 13)
16 CABLE, Flexible (part of item 13)
17 See Note ASSEMBLY, Display Board (includes item 12)
18 7505083E08 PAD
19 7505641 N03 PAD (2 req'd)
4210217A26 TIE WRAP (2 req'd
21 INSERT, Voltage (part of item 22)
22 2805245901 DRAWER, Fuse (includes item 21)
23 1405209L09 INSULATOR (4 reqd)
2
3
4
5
6
7
8
CEPF-17308-A
8
NOTE: Refer to Electrical Parts List for part number and description.
EXPLODED VIEW PARTS LIST AND DIAGRAM