JBL Soundgear Series, Service Manual

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3. RECORD BIAS ADJUSTMENT
4. TUNER ADJUSTMENT
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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
Test Tape
MTT-5511
Record/Playback
and Pause Mode
Frequency Counter
Figure 3. Record Bias Adjustment Connection Diagram
Unit
Signal Generator
GND
Electronic
OSCILLOSCOPE
FM Antenna
Terminal
Speake
Figure 4. Tuner(S curve) Adjustment Connection Diagram