Yaesu FT-51R, Technical Supplement

Page: 16 / 83

Alignment Power Connections
The FT- 51R must be partially disassembled to per­
form the following three steps. The contact assembly
must be removed to allow access to the adjustment
points, and power must be applied using miniature
hook-on clips. The graphics below show the test­
point locations and how to connect the hook-on clips.
Refer to the
PCB Access
&
Disassembly
chapter for
proper disassembly instructions, and ensure you
have the proper hook- on clips before beginning.
VR3001
430 RF ADJ.
TP6002
GND
TP6001
+11V
Alignment Points
&
Power Connection
PLL & Transmitter
Set up the test equipment as shown for transceiver
alignment. With the battery contact assembly re­
moved, apply 11 VDC power to the transceiver using
miniature hook-on clips applied to the points on the
Contact Unit PCB as shown below.
TP6001 & TP6002
/
PCB
HOOK-ON
MINI-CLIPS
Hook-On Clip DC Power Connection
50-0hm RF
Dummy Load
In line
Wattmeter
Deviation
Meter
Frequency
Counter
VHF/UHF
Sampling Coupler
RF Signal
___
j
Generator
CJooO
ClClClCl
ClClClCl
ClClClCl
Cl
Cl
s-n
Load
SINAD
Meter
Audio
Generator
Regulated DC
Power Supply
(11 VDC)
Refer to the drawings below for VHF and UHF
Alignment Points.
144-Mother Unit Alignemnt Points
FT-51R Technical Suoolement