Sony FH-B7CD - Page 15

HCD-H7/H1500 |
TUNER SECTION
FM SECTION ADJUSTMENTS
Setting :
FM RF signal
generator
75Q, coaxial
FM ANTENNA teminal
Carrier frequency: 98MHz
Modulation: 1kHz, 75kHz deviation (US, Canadian, E, EA, AUS)
1kHz, 40kHz deviation (AEP, UK, WG, IT)
VOM
(DC range)
FM Discriminator Alignment (NULL Check)
Band : FM
Procedure :
1. Supply a lmV (60dByz) 98MHz signal from the ANTENNA
terminal.
2. Tune the to 983MHz.
3. Adjust IFT82 for 0V reading on the VOM.
Note: FM tuned indication lighting level adjustment should
be made after FM discriminator alignment.
FM Tuned Indication Lighting Level Adjustment
Band: FM
Procedure :
1. Supply a 324V (30dBy) 98 MHz signal from the ANTEN-
NA terminal.
2. Tune the set to 93MHz.
3. Adjust RV81 so that the | TUNED | light up.
Adjustment Location : main board
AM SECTION ADJUSTMENTS
Setting
:
loop
antenna
B
loop antenna A =)
MW (AM) Tuned Indication Lighting Level Adjustment
Band: MW or AM
AM RF signal
generator
30% amplitude
modulation by 400Hz signal
Procedure :
1. Set loop antenna A so that the loop antenna B_ input
level becomes 0.45mV (53dBy).
2. Tune the set to 1,490kHz (US, Canadian) or 1,404kHz
(AEP, UK, WG, IT, E, EA, AUS).
3. Adjust the RV82 so that the | TUNED | light up.
SW OSC Voltage Adjustment (E, EA, AUS model)
Band : SW
Procedure :
Connect the VOM to TP (OSC).
Tune the set to 5.95MHz.
Adjust T2 for 0.9 to 1.1V reading on the VOM.
Tune the set to 17.90MHz.
Adjust CT22 for 8.3 to 8.7V reading on the VOM.
A aie ae
SW Tracking Adjustment (E, EA, AUS model)
Band : SW
Procedure:
1. Connect the VOM to speaker terminal.
2. Adjust for a maximum reading on VT VM.
Signal generator and
set frequency
17.0MHz CT2i
Adjustment part