Kenwood TK-90 Service Manual page 78

TK-90
Item Condition
3. IF gain 1) Menu No. : 2
(13.2MHz, USB)
SSG f. : 13.201MHz
SSG output : OFF
2) SSG output : –107dBm (1.0µV)
4. S/N 1) Display f. : 550kHz
• 550kHz Mode : AM
PRE-AMP : ON
*AF output : 0.45V/4Ω (LV7)
SSG f. : 550kHz
SSG output : –79dBm (25µV)
MOD : 1kHz, 60%
2) MOD : OFF
• 13.2MHz 3) Display f. : 14.200MHz
Mode : DATA
PRE-AMP : ON
*AF output : 0.45V/4Ω (LV7)
SSG f. : 13.201MHz
SSG output : –121dBm (0.2µV)
4) SSG output : OFF
• PRE-AMP 5) Display f. : 13.200MHz
gain Mode : DATA
PRE-AMP : ON
*AF output : 0.45V/4Ω (LV7)
SSG f. : 13.201MHz
SSG output : –118dBm (0.28µV)
6) PRE-AMP : OFF
• RF ATT 7) Display f. : 13.200MHz
Mode : DATA
ATT : OFF
*AF output : 0.2V/4Ω
SSG f. : 13.201MHz
SSG output : –116dBm (0.35µV)
8) ATT : ON
SSG output : –96dBm (3.54µV)
*: When the volume cannot be decreased, verify the value set for "Minimum Volume".
78
When "Minimum Volume Type" is set to "Lowest Limit" in the FPU, the volume cannot be decreased lower than the value set for the "Minimum Volume".
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
SSG Rear ANT
panel
Oscilloscope EXT.SP
AF V.M
DM. SP
SSG Rear ANT
panel
Oscilloscope EXT.SP
AF V.M
Distortion
meter
DM. SP
Audio
analyzer
Adjustment
Parts Method
[ ] or Check the adjust-
[ ] ment value (A)
displayed on the left
side of the display.
Change the adjust-
ment value (B)
displayed on the
right side of the
display by pressing
the [ ] or [ ]
keys so that adjust-
ment value (A)
increace by 5 (A+5).
Check –10dB or less
Check –10dB or less
Set SINAD at 0dB.
Check –(5~15)dB
AF level = A
Check for AF level A±2dB
Specifications/Remarks
M 2
I F G : 0 4 8 0 3 3
A
M2
IFG : 053 033
A+5 B