WRT-800A (AU)
TABLE OF CONTENTS
1. OPERATION INSTRUCTIONS
2. SERVICE OVERVIEW
2-1.
Disassembly ................................................................................................ 2-1
2-2.
Notes When Assembling Parts .................................................................... 2-3
3. ELECTRICAL ALIGNMENT
3-1.
Equipment and Tools .................................................................................. 3-1
3-2.
Adjustment .................................................................................................. 3-2
3-2-1.
+
3V (Vcc) Regulated Voltage Check ........................................ 3-4
3-2-2.
Carrier Frequency Adjustment ................................................... 3-4
3-2-3.
Reference Frequency Deviation Adjustment ............................. 3-5
3-2-4.
Maximum Frequency Deviation Adjustment ............................. 3-5
3-2-5.
Distortion Ratio Check ............................................................... 3-6
3-2-6.
S/N Check .................................................................................. 3-7
3-2-7.
Frequency Characteristics Check ............................................... 3-7
3-2-8.
RF Power Output Adjustment .................................................... 3-8
3-2-9.
Tone signal Adjustment ............................................................. 3-8
3-2-10. Battery Alarm Signal Check .................................................... 3-10
3-2-11. Spurious Emissions Check ....................................................... 3-11
4. BLOCK DIAGRAM
5. SEMICONDUCTOR PIN ASSIGNMENT
6. SCHEMATIC DIAGRAMS AND BOARD LAYOUTS
6-1.
Board Layouts ............................................................................................. 6-1
6-2.
Schematic Diagrams .................................................................................... 6-2
7. SPARE PARTS
7-1.
Notes on Repair Parts .................................................................................. 7-1
7-2.
Exploded View and Parts List ..................................................................... 7-2
7-3.
Electrical Parts List ..................................................................................... 7-4
7-4.
Supplied Accessories .................................................................................. 7-6
