Cue Bias Current Adjustment; Cue Pb Level Adjustment; Cue Rec/Pb Level Adjustment - Panasonic DVCPRO50 Service Manual

7-5. CUE BIAS CURRENT
Adjustment
BOARD RF/CUE
TP TP4005 [RF/CUE Board]
TP4006 (GND) [RF/CUE Board]
ADJ. VR4001(BIAS), FL4001(Core)
TAPE Blank Tape
INPUT No audio input
MODE REC
M. EQ VTVM (Wide mode)
SPEC. 7mVrms ± 0.5 mVrms
1. Set the VR4001 (BIAS) to the center position.
2. Connect the Vacuum Tube Voltmeter between
TP4005 (HOT) and TP4006 (GND).
Adjust FL4001 and VR4001 so that the voltage is
in the specification.
<Note>
Adjustment position of VR4001 should not be
maximum position. If it is maximum position, adjust
FL4001.

7-6. CUE PB Level Adjustment

BOARD AUDIO (F1)
TP AUDIO OUT (CH1)
ADJ. G09: LINE OUT CUE (Service Menu)
VR5001 (PB LEVEL)[B-1]
TAPE VFM3380KM(50M Alignment Tape)
VFM3580KM/KL(25M Alignment Tape)
INPUT -----
MODE Playback
M. EQ Audio Analyzer
SPEC. 0dBu ± 1.0dB
1. Open the SERVICE MENU. (Refer to SEC1
Service Information.)
2. Select the G00: AUDIO ADJUST and press the
"SET" button to open the AUDIO ADJUST
MENU.
3. Set the G09 LINE OUT CUE to ON.
<Caution>
During this adjustment, do not close the Service Menu.
The setting of G09 LINE OUT CUE will be reset to
OFF automatically.
4. Playback the 50M Alignment Tape, and adjust
VR5001 (PB LEVEL) so that the LINE OUT CH1
level is in the specification.
5. Playback the 25M Alignment Tape (Indicate the
"DVCPRO" on the front panel), and confirm that
the LINE OUT CH1 level is in the specification.
6. Close the menu.
<Caution>
1. Clean the A/C head, before this adjustment is
executed.
2. Confirm the tape path condition around A/C head.

7-7. CUE REC/PB Level Adjustment

BOARD AUDIO (F1)
TP AUDIO OUT (CH1)
ADJ. VR5006 (REC CURR)[A-1]
TAPE Blank Tape
INPUT AUDIO IN CH1,2 (1KHz 0dBu Sinewave)
MODE SELF-REC / PLAY
M. EQ Audio Analyzer
SPEC.
1. Open the SERVICE MENU. (Refer to SEC1
Service Information.)
2. Select the G00: AUDIO ADJUST and press the
"SET" button to open the AUDIO ADJUST
MENU.
3. Set the G09 LINE OUT CUE to ON.
<Caution>
During this adjustment, do not close the Service Menu.
The setting of G09 LINE OUT CUE will be reset to
OFF automatically.
4. Open the SET UP MENU by pressing the
"MENU" button.
Select the "726 REC CUE" item and set it to the
"CH1". After that press the "SET" button.
5. Supply a 1kHz, 0dBu sinewave signal into the
AUDIO IN (Both CH1 and CH2) and record the
input signal for few minutes.
6. Playback the just recorded portions and confirms
that the
specification.
7. If it is not, slightly adjust VR5006 and then repeat
step 3 to 5 until it is in the specification.
8. Open the SET UP MENU again, and set the "012
SYSTM FORMAT" to 25M.
9. Perform the Item 3 to 4.
ELE-58
0dBu ± 1.0dB
AUDIO OUT (CH1) is in the