Sony SPP-ID300 Service Manual page 12

5. RSSI ON/OFF Level Check
Setting:
SSG
Carrier frequency: 46.77 MHz
Modulation: off, ± 0 kHz deviation
Output level: 10 dB µ EMF
Procedure:
1. Change the carrier frequency of SSG to 46.77 MHz.
2. Change the modulation of SSG to OFF (±0 kHz deviation).
3. Change the output level of SSG to 10 dBµ EMF.
4. Press the [PGM] key to change the test mode step to RSSI
CHECK.
5. Check that the buzzer (SP501) does not ring.
6. Change the output level of SSG to 33 dBµ EMF.
7. Check that the buzzer (SP501) rings continuously.
Adjustment Location:
L510
Sensitivity Adjustment
L501
L505 RX VCO Adjustment
L502 DISCRI Coil Adjustment
RT501
Speaker Output Level Adjustment
L509 TX VCO Adjustment
TP (ANT)
TP (GND)
– HAND (MAIN) BOARD –
(Side A)
– 12 –
6. Data in Check
Setting:
SSG
Carrier frequency: 46.77 MHz
Modulation: 200 Hz, ± 4 kHz deviation
Output level: 4 dB µ EMF
Procedure:
1. Change the modulation of SSG to 200Hz (±4 kHz deviation).
2. Change the output level of SSG to 4 dBµ EMF.
3. Press the [*] key to change the test mode step to DATA IN
CHECK.
4. Check that the buzzer (SP501) rings continuously.
– HAND (MAIN) BOARD –
(Side B)
TP (ANT)
TP (RX VCO)
TP (GND)
1
IC504
TP (MIC–)
TP (ANT)
TP (GND)
J502
1
2
TP (DISC)
TP (MIC+)