52
2.R4 Mechanism employs PWM (Pulse Width Motor) as Capatan Motor Drive Signal in REC or PLAYBACK mode
To improve power consumption value, R4-Mechanism uses PWM signal as Capstan Motor drive signal instead of Linear driving
signal which is used in Z-Mechanism.
Fig.MD1
PWM CAPSTAN MOTOR DRIVE
Z-Mechanism (Linear drive signal)
R4-Mechanism (PWM drive signal)
CAPSTAN MOTOR DRIVING SIGNAL
ADVANTAGE OF PWM DRIVE
PWM drive turns on the Transistors for half time of duty.
In other than above time, motor is driven with the reverse
electromotive force.
A3
A2
A1
B2
B1
B3
ON / OFF
Always ON
Half wave
Full wave
Summary of Contents for NV-HV61EE
Page 21: ...2 REMOVAL OF THE BACK PANEL Remove 2 Screws C Remove Screw D Unlock 4 Tabs E Fig D3 21 ...
Page 29: ...10 2 CASING PARTS SECTION 29 ...
Page 30: ...10 3 PACKING PARTS SECTION 30 ...
Page 31: ...11 REPLACEMENT PARTS LIST 31 ...
Page 41: ...C4537 ECJ2VC1H560G CHIP CAPACITOR 41 ...
Page 44: ...D2002 B0AAED000003 DIODE 44 ...
Page 47: ...Q1152 2SC3311ASA TRANSISTOR 47 ...
Page 49: ...R1502 ERJ3GEYJ273V CHIP RESISTOR 49 ...
Page 54: ...W519 ERJ3GEY0R00V CHIP JUMPER 54 ...
Page 109: ...4 1 3 PARTS NAME OF R4 MECHANISM Fig M2 ...
Page 139: ...34 ...