Read Sony SRF-87 (serv.man2) Service Manual online
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Adjustment Location:
[MAIN BOARD] (COMPONENT SIDE)
[MAIN BOARD] (CONDUCTOR SIDE)
2nd OSC Adjustment
Setting:
BAND switch: FM DX
Procedure:
1. Connect the frequency counter to TP (OSC).
2. Adjust L3 for 57.1 MHz ± 0.25 MHz reading on the frequency
1. Connect the frequency counter to TP (OSC).
2. Adjust L3 for 57.1 MHz ± 0.25 MHz reading on the frequency
counter.
Connection:
FM STEREO (38KHz) Adjustment
Setting:
BAND switch: FM DX
Procedure:
1. Connect the frequency counter to TP (VCO).
2. Adjust L5 for 38 kHz ± 0.05 kHz reading on frequency counter.
1. Connect the frequency counter to TP (VCO).
2. Adjust L5 for 38 kHz ± 0.05 kHz reading on frequency counter.
Connection:
+
+
–
TP (OSC) (IC1
@¢
PIN)
1 µF/50 V
frequency counter
TP (VCO) (IC1
!ª
PIN)
1 µF/50 V
frequency counter
+
+
–
L5 FM STEREO (38 kHz)
ADJUSTMENT
L7 FM FREQUENCY
COVERAGE ADJUSTMENT
L6
AM TRACKING
ADJUSTMENT
L2
FM TRACKING
ADJUSTMENT
RV1
CV1
S2
S1
IC1
CV1
CT3
AM TRACKING
ADJUSTMENT
CT1
FM TRACKING
ADJUSTMENT
TP
(FM NAT IN)
TP (OSC)
TP (VCO)
CT2
AM FREQUENCY
COVERAGE
ADJUSTMENT
CT4
FM FREQUENCY
COVERAGE
ADJUSTMENT
L4 AM FREQUENCY
COVERAGE ADJUSTMENT
L3 2nd OSC ADJUSTMENT
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