Service Manuals, User Guides, Schematic Diagrams or docs for : LG Audio FJ-X4AX fx4adj
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MODEL:FR-X4A
ADJUSTMENTS(TUNER)
This set has been aligned at the factory and normally will not require further adjustment. As a result, it is not
recommended that any attempt is made to modificate any circuit. If any parts are replaced or if anyone tampers
with the adjustment, realignment may be necessary.
1. ADJUSTMENT & TEST POINT
(Tuner P.C. Board)
2. AM IF ADJUSTMENT(on P.C. Board)
AM Mode Condition Test Point Adjustment Adjust for
603kHz MOD. 30% Speaker L201 Maximum
Terminal
3. FM 0 Volt Adjustment(on P.C. Board)
FM mode Contion Test Point Adjustment Adjust for
90MHz 60dB Between point L204 0 100mV
R214
-7-
MODEL:FJ-X4
ADJUSTMENTS
1. AZIMUTH ADJUSTMENT
Deck Mode Test Tape Test Point Adjustment Adjust for
Speaker
Playback MTT-114 Head Screw R/L Maximum
Terminal
Electronic Dual-trace
Speaker Voltmeter synchroscope
Head Terminal
Playback Mode
L ch L out
CH1 CH2
Test Tape
R ch Unit
MTT-114
GND
R out
(Azimuth Adjustment Connection Diagram)
2. MOTOR SPEED ADJUSTMENT
Deck Mode Test Tape Test Point Adjustment Adjust for
Speaker Top side of
Playback MTT-114 3kHz 45Hz
Terminal mechanism
Speaker
Head Terminal Frequency Counter
Playback Mode
Test Tape
MTT-111N Unit
Record/Playback GND
head
(Motor Speed Adjustment Connection Diagram)
3. RECORD BIAS ADJUSTMENT
Deck Mode Test Tape Test Point Adjustment Adjust for
Rec MTT-5511 Erase Head Wire L381 80kHz 5kHz
Speaker
Head Terminal Frequency Counter
Playback Mode
Test Tape
MTT-111N Unit
Record/Playback GND
head
(Record Bias Adjustment Connection Diagram)
-8-
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