TUNER SECTION
Low-range frequency
High-range frequency
l
AM IF/RF
MECHANISM SECTION
l
Driving Force check
Torque Meter
Specified value
Play: TW-2412
Reverse play:
l
Torque Check
Torque Meter
Over 30
Over 30
Specified value
rest Stage
Adjusting Point
V R 3 0 1
Vt 14.65 0.01
(input: Antenna
Output: TP5)
2
Voltage Vt Obtain 9
2. VR2
(Input: Antenna
Output:
3
Voltage Vt Obtain 1.5 0.03
2. VR3
(input: Antenna
Output:
4
Repeat steps 2 and 3 until no further improvement
can be made.
Specified Value/
Instrument Connection
Plav: TW-2111
Reverse
Fast forward:
I 20 to 50
20 to 50
55
l
Head Azimuth
Test Tape
Instrument Connection
I
Headphones Socket
(455
Obtain the best output.
(Input: Antenna.
Output: TP3)
Maximize the output.
(Input: Antenna
Output: Headphones Socket)
(Lord resistance: 24 ohms)
l
Tape Speed
Test Tape Adjusting Specified value Instrument Connection
Point
3,000 90 Hz
Headphones Socket
3and
(510
TC3
(1,650
Tracking
(600
Checking
(I ,400
Maximize the output.
(input: Antenna
Output: Headphones Socket)
(Lord resistance: 24 ohms)
l
FM IF/RF
Test Stage
Adjusting Point
Specified
Instrument Connection
IF
Checking
MHz)
Check the curve to the center.
(Input: TP2
Output: TP3)
Maximize the output.
(Input: TP4
Output: Headphones Socket)
(Lord resistance: 24 ohms)
Band
coverage
(87.3 MHz)
TC2
MHz)
Tracking
(88 MHz)
Checking
Maximize the output.
(Input: TP4
Output: Headphones Socket)
(Lord resistance: 24 ohms)
TUNER PWB-A
FM TRACKING
FM BAND COVERAGE
AMBANDCOVERAGE
Figure 5 ADJUSTMENT POINTS
