Adjustments - Hitachi HTA-DD1E Service Manual

ADJUSTMENTS

1) FM Discriminator
Measuring instrument and condition.
Input Terminal Output Terminal Measuring Instrument
FM Antenna
1kHz, 60 dBµ
22.5kHz dev.
2) Voltage of covering (Reference)
Measuring instrument and condition.
Band
FM
AM
* R22 DC Balance Meter
*
R22
Destination
50 kHz step
[E, EBS, W,WUN] 108.00 MHz
10 kHz step
[W,WUN]
9 kHz step
[E, EBS, W, WUN]
Frequency
98.1MHz
DC balance meter
Frequency Specification
Limit (V)
87.50 MHz 1.3 - 3.7
6.0 - 9.0
520 kHz 0.9 - 1.2
1,710 kHz 6.0 - 9.0
522 MHz 0.9 - 1.2
1,611 kHz 6.0 - 9.0
R51
TEST PT
BL1
Adjust Reading
T4 0±30mV
Note
Average (V)
2.3
7.5
1.0
7.5
1.0
7.5