WF-930Z
ADJUSTMENT
MECHANISM SECTION
Play: TW-2412
Tape 1: Over 50g
Tape 2: Over 60 g
Torque Meter
Specified Value
• Driving Force Check
Specified Value
Torque Meter
• Torque Check
Play: TW-2111
30 to 60 g.cm
30 to 60 g.cm
Fast forward: TW-2231
55 to 120 g.cm
80 to 135 g.cm
Rewind: TW-2231
55 to 120 g.cm
80 to 135 g.cm
• Head Azimuth
MTT-114
Headphones Socket
(Load resistance: 32 ohms)
Test Tape
Instrument Connection
Test Tape
• Tape Speed (Normal only)
Adjusting
Point
Specified
Value
Instrument
Connection
MTT-111
Tape 1,2: VR501
3,000
±
60 Hz
Headphones
socket(Load
resistance:
32 ohms)
Specified Value
MTT-118
1.3 V
±
3 dB
Speaker terminal
(Load resistance: 3 ohms)
Volume control
Max
Beat cancel
A
Function/Power
Tape/Stand-by
Dubbing speed/Built-in Microphone
OFF/Mic ON
TAPE SECTION
Position of each switch or control
Specified Value
• Bias Oscillation Frequency
Test Tape
• Playback Amplifier Sensitivity Check
Beat cancel
A: 100
±
4 kHz
B: 94
±
4 kHz
C: 104
±
4 kHz
– 6 –
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
• AM IF/RF
Specified
Value/Adjusting
Point
Test Stage
Instrument
Connection
IF
T3
Input: Antenna
Output: Pin 3 of IC2
MW Band
fL: L6
Coverage
fH: TC8
MW Tracking
fL (600 kHz):
L3 (MW)
fH (1,400 kHz):
TC7
SW1 Tracking
fL (2.6 MHz):
L4 (SW1)
fH (6.0 MHz):
TC2
SW1 Band
fL: L7
Coverage
fH: TC4
SW2 Band
fL: L8
Coverage
fH: TC3
SW2 Tracking
fL (8.5 MHz): L5
fH (19 MHz): TC1
Instrument
Connection
Specified
Value/Adjusting
Point
IF
T1
Detection
T2
Band Coverage
fL: L2
fH: TC6
Test Stage
Input: Antenna
Output: Pin 1 of IC1
• FM IF/RF
Tracking
fL (88.0 MHz):
L1
fH (108.0 MHz):
TC5
Instrument
Connection
Specified Value
Test Stage
VR1
76 kHz
±
200 Hz
Pin 13 of IC2
• VCO Frequency
Instrument Connection
Tape 1
Tape 2
