Panasonic KX-G8300 Quick start guide

ORDER NO. KM49110828A2
Service
Manual
and Technical Guide
KX-G8300
for Germany)
MARINE RADAR
Please use this manual together with the service manual for model No. KX-G8300, order No. KM49004195C1.
This service manual indicates the main differences between; original KX-G8300 (KM49004195C1) and KX-G8300 for
Germany (KM49110828A2).
m PARTS COMPARISON TABLE
Part No. Pes/
Ref. No. KX-G8300 KX-G8300 for Germany Part Name & Description Set Remarks
KM49004 195C1 KM49110828A2
KX-G8300M0 (Display Unit
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VR1[EVNDXAA03B52__— | PQNB3A00B13M_ | Variable Resistor, 1kKQ(B)
[VR2_[EVNDXAA03B53_— [EVM38GA00B53 [Variable Resistor, 5000(B) | tT
RI20 [EXBP84i3K | senenee sd Resistor Array dT eto
RIg7 TS PQAR1OXI221 (2200, OW, Carbon C‘iTCS Tf Aiton
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pRos2 fe CSPPQARTOXIGBO —*[6BQVIOW, Carbon Tito
R933-970 — [PQ4R10XJ101_ 1000, 1/10W, Carbon C‘C;SSC*Y OS CL Aiton
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[C14 [PQCBCIHI21KB_[PQCUV1H121UC_———sC*'420PF,50V,Chip CT
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Panasonic

KX-G8300 |
Part No. Pes/
Ref. No. KX-G8300 KX-G8300 for Germany Part Name & Description Set Remarks
KM49004195C1 KM49110828A2
[C316 [ECQM1H394JV_—— [ECQV1H394JZ——*[0.39uF, 50V, Polyster
caso | —CSECQVAH184NZ SS 0.18uF, 50V, Polyster Ci‘; AC Addition
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KX-G8300DM (Antenna Unit
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C633 PQCBC1H102KB PQCBC1H680JL [68PF,50V,Ceramic CE
C634 PQCBC1H681KB PQCBC1H821KB [S20PF,50V, Ceramic CT
C635 PQCBC1H471KB PQCBC1H221KB 220PF, 50V, Ceramic ie
PQLT1YOM1A PQLT1Y9M1B Transformer a onl
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lm NOTE (Page 2)
A general class FCC licence is required to service this
product. Please refer all service to qualified service facility. ap Non
[KX-G8300 (KM49004195C1)} [KX-G8300 for Germany (KM491 10828A2)]

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KX-G8300 KX-G8300 |
CIRCUIT BOARD (PQUP824YA)
Signal Processor PCB
(Component View)
|
K ® KXG8300XG
Printed in Japan

ORDER
NO.
KM49004195C1
Service
Manual
and Technical Guide
MARINE
RADAR
KX-G8300
ered
(Model KX-G8300DM)
(Model KX-G8300MO)
Matsushita Services Company Matsushita Electric Panasonic Sales Corns pany,
Division of Matsushita Electric of Canada Limited Division of Matsushita Electric
Corporation of America 5770 Ambler Drive, Mississauga, of Puerto Rico, Inc.
50 Meadowland Parkway, Ontario, L4W 2T3 San Gabriel Industrial F7ark
/ mi
Secaucus, New Jersey 07094 65th Infantry Ave. Km.9-5
,
Carolina,
Puerto
Rico
0630

KX-G8300
When you refer to the serial number, write down all 11 digits. The serial number may be found on the label affixed to the
bottom of the unit.
TABLE OF CONTENTS
Features: 3 sickciacd eae th ee ede dos ees 2
CRT Display Safety Precautions ...............++.44- 2
Specifications < viv; sschos sauce awe eee pee ewes 3,4
Location of Controls .............. eee eee teens 5,6
Installation and Connection ...............00 eee 7~15
Operations ;.ci0ehire ueiva ta nes as dalecbies Gee EONS OG Saale 16
Important Notice ........... cece eee eee eee eee 16
Disassembly Instructions ...............-s0e0ee 17-21
Water Resistant Check Points ................+.- 22, 23
MaintenanC@> 20... cc,s:cve ee Loi cite grade dine eel Sies.s 24, 25
Wiring Connection Diagram.................. 26, 27, 31
Circuit Board ..... 0... cee ees 28, 32, 37~40
Schematic Diagram ..............2 02 008- 29, 30, 33~36
Circuit Operations ........ 2... cc eee ee eee eee 41-53
Adjustments ........ 0... cc cece ce eee ee eee ee 53-62
Troubleshooting Guide ........... 0... ee eee eee 63~72
Tools for Servicing ......... 0. cc cece ee ee eee eee 73
Service Extension cord connecting Method ............ 74
Cabinet and Electrical Parts Location ............. 75~78
How to Check the CRT Display for Servicing .......... 79
Accessories and Packing Materials ..............065 80
Replacement Parts List ........... 2.02. cee eee eee 81~88
FEATURES
7-inch daylight bright high resolution display
3kW power :
Easy view screen
High-speed LSI graphic controller
Screen (frame) memory
8-level target quantization
Compact radome antenna
Dual pulse rates and pulse lengths
Two EBLs (Electric Bearing Lines)
Two VRMs (Variable Range Markers)
Echo freeze with auto return
Inter-target distance measurement between two targets
Off-center (an additional half radius in any direction)
(exept 24NM Range mode)
Flexible guard zone with audible alarm
Multi-interval plotting to show the track of moving targets
on the display
On-screen alpha-numeric readouts for Range, Rings,
Distance, Plot, Interference Rejection, Expansion,
Freeze, EBL, and VRM
1.8 foot antenna
Loran interface (NMEA 0183 interface Format),
LAT/Long, Vessel Speed, Range/Bearing to waypoint.
Back Lighted Keypad
Target Expansion at Ranges greater than 3NM.
8 CRT Brilliance Levels
Power Saving Mode for reduction of battery Consumption
CRT DISPLAY SAFETY PRECAUTIONS
X-Radiation
Warning: The only potential source of X-Radiation is the picture tube. However when the high voltage circuitry is
operating properly there is no possibility of an X-Radiation problem. The basic precaution which must be
exercised is to keep the high voltage at the following factory recommended level.
Note: It is important to use an accurate periodically calibrated high voltage meter.
1. To measure the high voltage, connect a high voltage meter to the unit (© to CRT Ground Strap and @ to CRT
anode).
2. Turn Brightness control fully counterclockwise (minimum brightness).
3. Measure the high voltage. The high voltage meter (electrostatic type) reading should indicate 12.0 kV+
1.0 kV.
4. If the meter indication is out of tolerance, immediate service is required to prevent the possibility of premature
component failure.
5. To prevent X-Radiation possibility, it is essential to use the specified picture tube. Any attempt to substitute a tube of
a different manufacturer or color can result in a serious X-Radiation hazard and component failure.
A general class FCC licence is required to service this product. Please refer all service to qualified service facility.

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SPECIFICATIONS
eANTENNA
1. Type: 1.8 ft. (54 cm) (Nominal length)
Center-fed waveguide slot array, Enclosed in the radome
2. Rotation Speed: 24 r.p.m. nominal
3. Beam width: Horizontal 4 degrees nominal
Vertical 25 degrees nominal
4. Side lobe: 21 dB
5. Polarization: Horizontal
eTRANSMITTER
1. Modulation Type: SCR Line Type Modulator
2. Frequency: 9410+30 MHz, PON
3. Magnetron Type: 9M302 ro Equivalent
4, Peak Power: 3kW nominal
5. Pulse width and 0.08 ps/prf 2500 Hz (0.25 to 1.5 NM)
Repetition Frequency (prf): 0.5 ws/prf 1000 Hz (3 to 24 NM)
eRECEIVER
1. Type: Superheterodyne
2. Intermediate Frequency: 60 MHz
3. Mixer and local OSC: MIC (Microwave Integrated Circuit) with limiter
4. Duplexer: Circulator
5. Noise Figure: 6 dB nominal
eMAIN UNIT (DISPLAY AND MAIN CONTROLER)
1. Display type: Raster Scan, Daylight viewing
2. CRT: 7 inch Green Monochrome CRT
3. Picture Quality: Non-interlaced Scanning
Effective Diameter 3.74” (95 mm)
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4. Range &
range rings interval:
(Unit: NM)
5. Range Discrimination: Less than 66 ft. (20 m)
6. Minimum Range: Less than 82 ft. (25 m)
7. Range Accuracy: 1.1% or 33 ft. (10 m), whichever is the greater value
8. Bearing Accuracy: 1 degree
ePOWER SUPPLY
1. Input Voltage: 10.8~42 VDC
2. Power Consumption: 57W approx. (25W approx. in saving mode)
3. Protection: Input Overvoltage
Reverse Polarity protection

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eENVIRONMENTAL CONDITIONS
1. Ambient Temperature: —13°F to +158°F (-25°C to +70°C) for Antenna unit
+5°F to +131°F (-15°C to +55°C) for Main unit
2. Relative Humidity: 95% at 104°F (40°C)
3. Protection against Water: Water resistant for Antenna unit-JIS Grade 6
Splash proof for Main unit-JIS Grade 4
4. Wind Survival: Relative wind 100 knots
eCOMPASS SAFE DISTANCE
fF Standard Compass Steering Compass
9.8 ft. (3.0 m) 5.6 ft. (1.7 m)
1.6 ft. (0.5 m) 1.3 ft. (0.4 m)
eSIZE AND WEIGHT
1. Weight (Antenna): 20.0 Ibs (9.1 kg)
2. Size:
9.77” (248 mm)
24” (610 mm
3. Weight (Main unit): 11.8 lbs (5.34 kg)
4. Size:
14.6” (372 mm)
10.6” (270 mm)
9.84” (250 mm)
10.7” (270 mm)
ae (219 mm
Fig. 1
Design and specifications are subject to change without notice.

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LOCATION OF CONTROLS
@Power ON/OFF Button
Used to turn ON the power source. Press this and TX/STBY button
simultaneously to turn off the unit.
@®Transmit/Standby (Power Saving Mode) Button
Switches between Transmit/Standby modes. /Set the Power Saving Mode.
@Saving Mode Indicator
This indicator lights in green when the system is in the Power Saving Mode.
@EBL/VRM Position Button
Used to measure the distance and bearing when the target is focused on by
turning EBL counter clockwise and reduction VRM.
©®EBL1/EBL2 ON/OFF Button
Turns ON/OFF EBL1 and EBL2.
©VRM Shift ON/OFF Button
Displays a third VRM on the screen to measure the distance between two
targets.
@Fixed Range Ring Display (Plot) Button
Displays/removes the fixed range rings./Displays sequential tracks of other
vessels.
®©@Anti Clutter Rain (Interference Rejection) Button
Eliminates rain clutter reflection from the screen./Turns on and off the
interference rejection (IR) mode when pressed after the FUNC button.
@Memory Display (Memory Storage) Button
Memorizes the current display or erases the memory./Recalls or eliminates
the memorized display to or from the screen.
Heading Marker Off (EBL & VRM Clear) Button
Temporarily removes the heading marker from the screen./Deletes EBL and
VRM.
@ Range (Down) Button
Reduces the range of measurement.
@ Receiver Tuning Control Knob
Adjusts the receiver sensitivity to the transmitter.
® Anti Clutter Sea Control Knob
Eliminates the unwanted echoes from the near by sea surface.
Receiver Gain Control Knob
Adjusts the receiver gain.
@EBL/VRM Position Button
Used to measure the distance and bearing by sighting the target with the
clockwise turn of EBL and the enlargement of VRM.
@ VRM1/VRM2 ON/OFF Button
Turns ON/OFF VRM1 and VRN2.
@ Off Center Button
Shifts the position of your own vessel 50% backward from the bearing
indicated by EBL. This enables the user to observe a target located farther
away.
@ Guard Zone Alarm (Display Freeze) Button
Sets or eliminates an alarm zone. When an alarm zone is set, the entry of an
terget is informed with an alarm./Temporarily stops the display motion.
@ Display Brilliance Control (Panel Illumination Dimmer) Button
Adjusts the display brilliance./Adjusts the illumination of the control panel
when pressed after the FUNC button.
@ Target Expansion (Navigation Data Display) Button
Used for target expansion./When Loran is installed, pressing the FUNC
button and this displays the longitude and latitude of own position range and
bearing to a waypoint.
@ Function Button
Allows the user to select a function shown in blue reversed print on buttons,
@)@. ©. ©. @,. @ ®, and@.
@ Range (Up) Button
Expands the range of measurement.
Main Unit
(Display and Main Contoler)
Fig. 2

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Display Information
Heading Marker
OOCCCE VRM 1/2
3NM
0.5
Fixed Range Ring
Inter-Target Distance
Measuring Origin
Inter-Target Distance Indication
(VRM-3)
Plot Interval Elapsed Time and Time Indication Main Unit
Function Indication
Alarm/Zone/
<Brilliance> Indication
Display Freezing Indication
Anti Clutter-Rain Indication
Target Expansion Indication
Interference Rejection Indication
Receiver Tuning Indication
Range Indication
Range Ring Interval
Ly 40°37.15N
EBL 1 Relative Bearing Indication EEE TA
EBL 2 Relative Bearing Indication
VRM 1 Distance Indicatoon
VRM 2 Distance Indication
Inter-Target Distance Indication
(VRM-3)
© Latitude, Longitude Indication
© Way Point Bearing and Range Indication
© Speed Indication
Fig. 3 @ Marks are indicated by Loran.
a
SPD
WP
P52.5
00.0KT
180.0°M
Screen Memory Indication