50
*Note4:
X-VALUE & LINEARITY (P2 and P3 Posts) Adjustment Procedure
1. Set the Auto Tracking to off.
(1) Set Drive Select to VHS and press the [STOP] and [EJECT] keys simultaneously for more than 3 seconds to enter Service
Mode.
(2) Press [STOP] and [EJECT] keys simultaneously twice to activate Service Mode 2, and then Auto-Tracking is turned off.
2. Perform the X-VALUE ADJUSTMENT
X-VALUE ADJUSTMENT
(1) After turning off the Auto tracking, playback the alignment Tape and press [CH UP] and [CH DOWN] keys simultaneously
to adjust the tracing to FIX value.
(2) Adjust A/C Head Base so that the envelope becomes maximum level.
(It is described on
“5-2. Tape Interchangeability
in
“R4 Mechanism”
that is separated volume.)
LINEARITY ADJUSTMENT
(1) After turning off the Auto tracking, playback the alignment Tape and press [CH UP] and [CH DOWN] keys simultaneously
to adjust the tracing to FIX value.
(2) Adjust the LINEARITY so that the envelope is flat when moving tracking to (+) and (-) directions.
l
Main symptoms and Adjustment point
Alignment Tape
VFM8125H3F
Test Point of Playback Envelope
TW3001 (or TW4502)
Alignment Tape
VFM8125H3F
Test Point of Playback Envelope
TW3001 (or TW4502)
Envelope
Post Name
Adjustment Method
P2 Post
Turn P2 Post counter-clockwise
(Approx. 1/2 revolution)
P2 Post
Turn P2 Post clockwise
(Approx. 1/4 revolution)
P3 Post
Turn P3 Post clockwise
(Approx. 1/2 revolution)
P3 Post
Turn P3 Post counter-clockwise
(Approx. 1/4 revolution)
P2 Post
P3 Post
Turn P2 Post clockwise
(Less than 1 revolution)
Turn P3 Post counter-clockwise
(Less than 1 revolution)
Summary of Contents for DMR-EZ49VEB
Page 5: ...5 2 2 Precaution of Laser Diode ...
Page 7: ...7 3 Service Navigation 3 1 Service Information 3 2 Caution for DivX except DMR EZ49VEB ...
Page 10: ...10 4 Specifications ...
Page 11: ...11 ...
Page 13: ...13 ...
Page 35: ...35 9 2 P C B Positions ...
Page 46: ...46 10 1 2 Checking and Repairing of Main P C B ...
Page 47: ...47 10 1 3 Checking and Repairing of RAM Digital P C B Module ...
Page 75: ...S 23 ...
Page 91: ...S 39 ...
Page 126: ...S 74 ...