Read JBL SG 2020 Service Manual online
3. RECORD BIAS ADJUSTMENT
4. TUNER ADJUSTMENT
-8-
Deck Mode
Rec/Pause
MTT-5511
ERASE HEAD
WIRE(PN402)
L201
60kHz±5kHz (Auto-stop)
85kHz±5kHz (Auto-Reverse)
Test Tape
Test Point
Adjustment
Adjust for
Item
DC Voltage
Checker Pin
TP101, 102
0V±50mV
Test Point
Adjustment
Adjust for
Head
Unit
PN402
GND
Record/Playback
head
head
Test Tape
MTT-5511
MTT-5511
Record/Playback
and Pause Mode
and Pause Mode
Frequency Counter
Figure 3. Record Bias Adjustment Connection Diagram
Unit
Signal Generator
GND
Electronic
OSCILLOSCOPE
OSCILLOSCOPE
FM Antenna
Terminal
Terminal
Speake
Figure 4. Tuner(S curve) Adjustment Connection Diagram
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