Awesome manual. Complete diagrams of all board assemblies as well as how to get to each part of the t.v. down to the individual screws and their locations. Get it.
This is exactly the service manual I needed.
Complete with all schematics, partslists, PCB layouts and alignment instructions.
This manual covers both the T-4970 en T-488F Onkyo tuner.
Text excerpt from page 25 (click to view)
Item
Display
Frequency (MHz) CQ �446.050 �445.050 �435.050
Adjust Point
Adjust Range RF signal level: -2dBu
Condition
10. S meter-L
Sm-L
T E
V/M
Check that the BEEP sound be heard after pressing V/M. RF signal level: 10dBu
11. S meter-H
CQ Sm-H T E
�446.050 �445.050 �435.050 V/M
Check that the BEEP sound be heard after pressing V/M. Check that the BEEP sound be heard
12. Standard Voltage bAtt � V/M
after pressing V/M. (Power Supply: 6.0V) Check if it is set the code 5E.
13. Low Battery (AA Battery) bAt-1 � V/M
If it is set to other code, adjust to code 5E by using �/�. Check that the BEEP sound be heard after pressing V/M. Check if it is set the code 3E.
14. Low Battery (Li-ion Battery) bAt-2 � V/M
If it is set to other code, adjust to code 3E by using �/�. Check that the BEEP sound be heard after pressing V/M.
15. Aging
Press PTT to start Aging. AGInG Press PTT to finish Aging. (Power Supply: 6.0V)
Turn off the power switch when the adjustment finishes.
