WF-1100W
– 6 –
ADJUSTMENT
Specified Value
MECHANISM SECTION
• Driving Force Check
Specified Value
• Torque Check
Play: TW-2111
30 to 70 g.cm
27 to 60 g.cm
Fast Forward: TW-2231
Over 55 g.cm
55 to 120 g.cm
Rewind: TW-2231
Over 55 g.cm
55 to 120 g.cm
• Head Azimuth
MTT-114
Headphones Socket
(Load resistance: 32 ohms)
Instrument Connection
• Tape Speed (Normal only)
Instrument
Connection
MTT-111
Tape 1,2:VR102 3,000
±
60 Hz Headphones
Socket
(Loadresistance:
32 ohms)
Torque Meter
Torque Meter
Test Tape
Test Tape
• Playback Amplifier Sensitivity Check
Play: TW-2412
Tape 1: Over 60 g
Tape 2: Over 50 g
Tape 1
Tape 2
Adjustment
Point
Specified
Value
Specified value
Instrument Connection
MTT-118
2.5 V
±
3 dB
Speaker terminal
(Load resistance: 8 ohms)
Test tape
Figure 6 VCO FREQUENCY TEST CIRCUIT
TUNER SECTION
fL: Low-range frequency
fH: High-renge frequency
Specified value
Instrument Connection
VR1
76 kHz
±
200 Hz
Pin 13, Pin 21 and ground
of IC2
Adjustment
Point
• VCO Frequency
Note:
After preparing the test circuit shown in Fig. 6, connect the Pin
13, Pin 21 and ground of the IC2 with the test circuit, and
measure the value.
• FM IF/RF
Specified Value/
Adjusting
Point
Test Stage
FM IF
L9
Input: FM Antenna
FM Detection L10
Output:Pin 9 of IC2
FM Band
fL: L1
Input: Antenna
Coverage
fH: TC1
Output: Headphone Socket
FM Tracking
fL(88.0 MHz): L2
(Load resistance:
fH(108 MHz): TC2
32 ohms)
Instrument
Connection
• AM IF/RF
Test Stage
Specified Value/
Adjusting
Point
Instrument
Connection
AM IF
L11
MW Band
fL: L6
Coverage
fH: TC3
MW Tracking fL(600 kHz): L3
fH(1,400 kHz):TC4
SW1 Band
fL(2.3 MHz): L7
Coverage
fH(7.3 MHz): TC5
SW1
fL(2.6 MHz): L4
Tracking
fH(6 MHz): TC6
SW2 Band
fL(7.3 MHz): L8
Coverage
fH(22 MHz): TC7
SW2
fL(8.5 MHz): L5
Tracking
fH(19 MHz): TC8
Input: Antenna
Output: Pin 9 of IC2
Input: Antenna
Output: Headphone Socket
(Load resistance
32 ohms)
10 pF
1M ohm
10K ohm
TO FREQUENCY
COUNTER
Pin 13 of IC2
Pin 21 of IC2
FET: 2SK212
(or Other 2SK Type FET.)
G
D
S
0.1
µ
F
Specified Value
Beat Cancel
A: 100
±
4 kHz
B: 94
±
4 kHz
C: 104
±
4 kHz
DECK SECTION
• Bias Oscillation
• Beat Cancel Switch: A
L301
100 kHz + 4 kHz
Pin 1 of CNS102
Adjustment Point
Specified value
Instrument
Connection
