JRC JMR-92 Series Field Service Manual page 385

4.1.5.4 Modulator Circuit (CPA-264) Replacement/NKE-2254-HS
See the section for NKE-1125.
4.1.5.5 Modulator (NMA-550) Replacement/NKE-2254-HS
See the section for NKE-1125.
4.1.5.6 Power Supply Circuit Board (CBD-1682A)
Replacement/NKE-2254-HS
See the section for NKE-1125.
4.1.5.7 T/R Control Circuit (CMC-1205R)
Replacement/NKE-2254-HS
See the section for NKE-1125.
For NKE-2254-HS, set the jumper pins and Dip switches as follows.
NKE-2254-HS (25 kW, X-band, 2 units, high-speed DC motor)
• Jumper pin settings
Jumper pin
J92,J93,J95,J96: 1-2 short circuit
4.1.5.8 Receiver (NRG-162A) Replacement/NKE-2254-HS
See the section for NKE-1125.
4.1.5.9 Encoder (CHT-71A) Replacement/NKE-2254-HS
See the section for NKE-1125.
4.1.5.10 Magnetron Fan Replacement/NKE-2254-HS
See the section for NKE-1125.
4.1.5.11 Modulator Fan Replacement/NKE-2254-HS
See the section for NKE-1125.
• DIP switch settings ( indicates a switch.)
SW2
ON
1 2 3 4 5 6 7 8
4-165
SW1
ON
1 2
Chapter 4 Replacement procedure