Panasonic AJ-D93MC, Service Manual, Page: 117 / 180

MECH-39
3-39. Self-REC/PLAY Envelope Waveform Confirmation
All of the head output are within the specification as shown below.
Confirm in the 50M mode.
⋅
When using the M Cassette (66 min.) or L Cassette (126 min.)
V1/Vmax, V3/Vmax
≥
0.7
V2/Vmax
≥
0.8
⋅
When using the Long Time L Cassette (thin tape)
V1/Vmax, V2/Vmax, V3/Vmax
≥
0.7
SPEC.
V4/Vmax
≥
0.5
R/P – L – ENV RF/CUE : TP6302 TRIGGER: R/P-L-HSW TP233: SERVO (F1)
R/P – R – ENV RF/CUE : TP6502
PB – L – ENV RF/CUE : TP6302
TEST POINT
PB – R – ENV RF/CUE : TP6502
M. EQ.
Oscilloscope
TAPE •
M Cassette (66 min.) or L Cassette (126 min.)
•
Long time L Cassette (AJ-5P92LP)
<Normal Tape : M Cassette (66 min.) or L Cassette
(126 min.)>
1. Input the color bar signal to VTR and record it.
2. Playback the just recorded portion, and confirm
the envelope output is within the specification.
(refer to Figure 3-39-1)
<Long time L Cassette (this tape) : AJ-5P92LP>
3. Input the color bar signal to VTR and record it.
4. Playback the just recorded portion and confirm
the envelope output is within the specification.
(refer to figure 3-39-2).
5. If it is out of specification, perform the “ENV
Waveform Adjustment” and “LISTA Adjustment”
again.
Figure 3-39-1 Envelope Waveform
Figure 3-39-2 Exit side of Envelope Waveform
(For Long play cassette)
4. NO TAPE LOADING METHOD
[ Procedure ]
Service Menu Selected Item Loading Procedure Unloading Procedure
SERVO ADJUST A09: TENSION
1. Open the “SERVICE MENU”.
2. Select the “SEVO MENU”.
3. Select “A09: TENSION”.
4. Continuously press the
SEARCH button. 1. Release the pressing of the “SERCH”
button.