Kenwood TR-7625 Service Manual page 26

TR-7625
ADJUSTMENTS
Measuring point
eemetia eee
Instrument] Unit | Terminal) Unit Parts Method
tear ANT 147.000 MHz
shift |
(cont) 'Symopesws 144.000 MHz
Adjust
Condition Reference Remarks
Confirm
Confirm
Wen nk
8) MR SW. ON 147900 MHz
Check that LED's
"7,000"
Confirm
indicate
11) L40,11.012.113
Measuring point Adjus
Reference Remarks
Condition
Unit | Terminal | Unit eee Method
—
instruments
1) POWER SW: ON
HI/LOW SW: LOW
MR SW: OFF
MODE SW: S
MHz SW: 5
100 kHz SW: 39
10 kHz SW: 5
5 kHz SW: 0
SUBTONE SW: OFF
REMOTE SW: ON
SEND/REC. REC.
SQUELCH VR: MIN
EXT. SP terminal:.
AF VTVM, 82
Oscilloscope
1) ANT terminal:
SWEEP GEN.
Oscilloscope VERT.GAIN:
MAX
1. Initial
controi
SETTING
Oscillo- La Adjust for a maximum
scope gain and for a waveform
(Detector) as shown at_ right
2. Helical
block
Repeat
CAUTION:
Do not
atternpt
adjust-
ment
without a
Sweep
Generator
1) REMOTE SW: OFF
ANT: SSG
(DEV.: 5 kHz. MOD
1 KHz
SSG OUTPUT:
Approx. 10dB (2uV)
AF GAIN: 0.63V/82
3. IF GAIN
Adjust L29 and L30 for
a maximum waveform
Adjust L31, L32 (a.b.c)
and L33 for proper
bandwidth and optimum
waveform
Adjust SSG
frequency and optimum
for correct
waveform
ema
Readjust L29 and L30
if the waveform is
distorted as shown
A
1) SSG OUTPUT: 30 dB
4.S METER
2) SSG OUTPUT: 5~ 10 dB) S METER
S METER
1} SSG OUTPUT: 0 dB
(0.5uV)
5. Discrimi-
nator
26
AF VTVM
MAX
Repeat procedure two
or three times.
Set scale 30uV odes. 30 dB+4 dB
MAX