Adjustment - LG LPC-M140A Service Manual

SECTION 2. ELECTRICAL
❏ ADJUSTMENTS
1. FM/AM ADJUSTMENT
NO ITEM
1 AM IF
LOW
2 AM COVER
HI
LOW
3 AM TRACKING
HI
LOW
4 FM COVER
HI
LOW
5 FM TRACKING
HI
2. TAPE DECK ADJUSTMENT
NO ITEM
1 TAPE SPEED
2 AZIMUTH ADJUST
3 RECORDING BIAS
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
INPUT POINT OUTPUT POINT
L108 IC101 PIN18
L108 IC101 PIN18
L108 IC101 PIN18
L108 IC101 PIN18
L108 IC101 PIN18
C101 IC101 PIN18
C101 IC101 PIN18
C101 IC101 PIN18
C101 IC101 PIN18
OUTPUT POINT
NOR MTT-111N
MTT114
- 2-1 -
SPECIFICATION ADJUSTING POINT
455kHz L102
515kHz L101
1650kHz TC3
600kHz L108
1400kHz TC4
87.00MHz L104
108.5MHz TC2
90MHz L103
106MHz TC1
SPECIFICATION ADJUSTING POINT
3000±90Hz NON
DECK MECHA ADJ. HOLE
55kHz±500Hz L203
ADJUST FOR
GAIN MAXIMUM
Repeat several times
GAIN MAXIMUM
Repeat several times
GAIN MAXIMUM
ADJUST FOR
GAIN MAXIMUM
LGE Internal Use Only