Note:
A. Be sure that the three probes of the meter are all in solid contact with the tape,
but not touching any other parts of the mechanism.
B. It is recommended that measurements should be repeated at least three (3)
times because the tension meter is very sensitive to external vibrations.
7.2.2.2. MR HEAD GAP ADJUSTMENT
Purpose:
To properly pick up the FG Signal.
Symptom of Misadjustment:
If the FG Signal is not properly picked up, Servo Operation cannot be achieved.
Equipment Required:
Oscilloscope
Specification:
0.1 mm ~ 0.13 mm
1. Remove the VCR Chassis Unit and then place it upside down.
81
Summary of Contents for PVQ-1300W
Page 9: ...Fig 1 3 Fig 1 4 9...
Page 10: ...10...
Page 13: ...5 1 2 1 2 Service Position 2 Fig 2 2 13...
Page 18: ...18...
Page 31: ...5 2 1 HOW TO READ THE IDENTIFICATION MARK OF CHIP COMPONENTS 31...
Page 34: ...6 1 2 Disassembly Method 34...
Page 35: ...35...
Page 37: ...Fig D4 37...
Page 38: ...Fig D5 38...
Page 43: ...6 2 2 Inner Parts Location Fig J1 1 43...
Page 44: ...6 2 3 EJECT Position Confirmation Fig J1 2 44...
Page 45: ...6 2 4 Grounding Plate Unit Full Erase Head and Cylinder Unit Fig J2 1 45...
Page 46: ...46...
Page 48: ...6 2 5 Capstan Belt Support Angle Intermediate Gear B and Main Cam Gear Fig J3 1 48...
Page 49: ...49...
Page 56: ...6 2 7 Reel Gear and Main Rod Fig J5 1 56...
Page 58: ...6 2 8 Stopper Angle Capstan Rotor Unit Oil Seal Capstan Stator C B A and MR Head Fig J6 1 58...
Page 59: ...59...
Page 61: ...61...
Page 65: ...6 2 10 1 Reassembly Notes 65...
Page 71: ...6 3 CASSETTE UP ASS Y SECTION 71...
Page 72: ...6 3 1 Top Plate Wiper Arm Unit and Holder Unit Fig K1 1 72...
Page 73: ...73...
Page 75: ...75...
Page 77: ...7 ADJUSTMENT PROCEDURES 7 1 SERVICE FIXTURES AND TOOLS 77...
Page 94: ...94...
Page 117: ...8 SCHEMATIC DIAGRAMS 8 1 SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT 117...
Page 132: ...DIODES 132...
Page 139: ...CAPACITORS 139...
