5-14
Electrical Shock Hazard:
This equipment contains high voltages which can cause death at several
internal circuits. Any internal adjustment, servicing and repair shall only be
perfomed by qualified service personnel totally familiar with electrical circuits
and servicing of the equipment. A residual charge remains in capacitors and
other devices several minutes after turning off the power.
It is therefore essential to wait at least 3 minutes to allow residual charge to
subside before acceessing the inside of the equipment.
DANGER
2. Measurement
*Setting Details
A
MIC IN: -40 dBm/1500 Hz/600
Ω
, 4 MHz/J3E/Power Data 220
B PTT ON (No AF signal)
C Receiving mode
D
SSG: 100 dB
µ
V/50
Ω
, 4MHz/J3E
E
MIC IN: -40 dBm/1500 Hz/600
Ω
, 4 MHz/J3E/Low Power Data 140
Table 5-3 Measurements (1/2)
Board Name Check Points *Setting Reading Remarks
T1 Input A 14 Vp-p [PA IN]: J4
Q4/5: B-GND 2 Vp-p
C-GND
A
15 Vp-p
Q4/5: B-GND 0.68 Vdc
C-GND
B
13 Vdc
DRIVE (2SC3133)
Q6/7: B-GND 4 Vp-p
C-GND
A
25 Vp-p
Q6/7: B-GND 0.6 +Vdc
C-GND
B
13 Vdc
PA (2SC3240)
C33 OUT A 250 Vp-p PA OUT
ANT A 250 -Vp-p
50
Ω
Load
J1 #10 (ALC) A 4.2 Vdc ALC CONT
PA/FIL
(05P0667)
U1-1 (Gate) C 2.3 Vdc
Overvoltage protector
(Input: 13.6 V)
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