5. Set the function switch to tune.
6. Rotate the level control fully clockwise.
7. Adjust the preselector control for a maximum indication on the VTVM.
8. Adjust the final control for a maximum indication on the VTVM, with the load
control set at the 50 ohm position.
9. Using an insulated screwdriver, adjust neutralizing capacitor for a minimum
indication on the VTVM.
10.Readjust the neutralizing capacitor for a minimum indication on the VTVM.
11.Turn the function switch to the off position.
12.Discharge high voltage power supply capacitors.
13.Reconnect final plates and screen grid.
* VTVM and RF probe will be needed.
**To remove screen voltage in SB-100, HW-100 and HW-101 disconnect R920 [100
ohm resistor] from buss wire between pins of V8 and V9. In the SB-102 removal of
accessory plug is all that's required. To remove high voltage in SB-100, SB-101 and
SB-102 disconnect red wire at lug 4 [in SB-100 lug 3] of terminal strip BK that goes to
grommet BL. In HW-100 and HW-101 disconnect red wire going to lug 1 of RF choke in
final cage.
NOTE: Take adequate steps to eliminate any possible contact with B+ or B+ shorts to
chassis after disconnecting wire and resistor.
ah.1.8. HW-101-6: SB & HW Series Audio Preamplifier & VOX Circuit
Troubleshooting Guide
MAY 23, 1974
HW-101 BULLETIN NO: SSB TRANSCEIVER HW-101-6
SEE BULLETIN NO: SB-100-3 DATED MAY 23, 1974 (see Page 150
ah.1.9. HW-101-7: SB & HW Series Instability & Corrective Information
MAY 23, 1974
HW-101 BULLETIN NO: SSB TRANSCEIVER HW-101-7
SEE BULLETIN NO: SB-100-4 DATED MAY 23, 1974 (see Page 151)
ah.1.10. HW-101-8: Oscillations or Low Drive
DECEMBER 18, 1974
HW-101 BULLETIN NO: SSB TRANSCEIVER HW-101-8
SEE BULLETIN NO: SB-100-5 DATED DECEMBER 18, 1974 (see Page 152)
HW-101 Service Bulletins Page 138
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