Bedienungsanleitung JVC DR-MV1SUC (Seite 13 von 24) (Englisch)

57095

Zoom out

Zoom in

Vorherige Seite

1/24

Nächste Seite

(No.YD006)1-13

4.3 Electrical adjustment

Note:

The following adjustment procedures are not only necessary

after replacement of consumable mechanical parts or board

assemblies, but are also provided as references to be referred

to when servicing the electrical circuitry.

In case of trouble with the electrical circuitry, always begin a

service by identifying the defective points by using the measur-

ing instruments as described in the following electrical adjust-

ment procedures. After this, proceed to the repair,

replacement and/or adjustment. If the required measuring in-

struments are not available in the field, do not change the ad-

justment parts (variable resistor, etc.) carelessly.

4.3.1 Servo circuit

4.3.1.1 Switching point

(1) Play back the signal (A1) of the alignment tape (A2).

(2) Apply the external trigger signal to D.FF (E) to observe the

VIDEO OUT waveform and V.PB FM waveform at the

measuring points (D1) and (D2).

(3) Set the VCR to the manual tracking mode.

(4) Adjust tracking so that the V.PB FM waveform becomes

maximum.

(5) Set the VCR to the Auto adjust mode by transmitting the

code (F) from the Jig RCU. When the VCR enters the stop

mode, the adjustment is completed.

(6) If the VCR enters the eject mode, repeat steps (1) to (5)

again.

(7) Play back the alignment tape (A2) again, confirm that the

switching point is the specified value (G).

Fig.4-3a Switching point

4.3.1.2 Slow tracking preset

(1) Record the signal (A2) in the mode (B1), and play back

the recorded signal.

(2) Set the VCR to the manual tracking mode.

(3) Set the VCR to the FWD slow (+1/6x) mode.

(4) Transmit the code (F) from the Jig RCU to adjust so that the

noise bar becomes the specified value (G) on the TV

monitor in the slow mode.

(5) Set the VCR to the Stop mode.

(6) Confirm that the noise bar is (G) on the TV monitor in the

slow mode.

(7) Repeat steps (3) to (6) in the REV slow (+1/6x) mode.

(8) Repeat steps (1) to (7) in the mode (B2).

Note:

• For FWD slow (+1/6x) playback, transmit the code “08”

from the Jig RCU to enter the slow playback mode, and

transmit the code “D0”for REV slow (-1/6x) mode.

4.3.2 DVD Video circuit

Note

• when perform these adjustments, set the unit to DVD

mode.(DVD lamp lights up)

4.3.2.1 EE COMPONENT Y level

(1) Observe the Y OUT waveform at the measuring point (D).

(2) Set the VCR to the EVR mode by transmitting the code (F1)

from the Jig RCU.

(3) Set the EVR address to (F2) by transmitting the code (F3)

from the Jig RCU.

(4) Transmit the code (F4) from the Jig RCU to adjust so that

the Y level of the Y OUT waveform becomes the specified

value (G).

(5) Release the EVR mode of the VCR by transmitting the

code (F5) from the Jig RCU again. (When the EVR mode

is released, the adjusted data is memorized.)

Fig.4-3b EE componet Y level

Signal (A1)

(A2)

• Stairstep signal

• Alignment tape(EP,stairstep,NTSC) [MHP-L]

Mode (B) • PB

Equipment (C) • Oscilloscope

Measuring point (D) • VIDEO OUT terminal (75 ohm terminated)

• TP106 (PB. FM)

External trigger (E) • TP111 (D.FF)

Adjustment part (F) • Jig RCU: Code “5A”

Specified value (G) • 6.5 ± 0.5H

Adjustment tool (H) • Jig RCU [PTU94023B]

Signal (A1)

(A2)

• Ext. input

• Color (colour) bar signal [NTSC]

Mode (B1)

(B2)

• VHS SP

•VHS EP

Measuring point (D) • TV-Monitor

Adjustment part (F) • Jig RCU: Code “71”or “72”

Specified value (G) • minimum noise

Adjustment tool (H) • Jig RCU [PTU94023B]

V.sync

Trigger point

Switching point

V. rate

Signal (A) • Internal color bar

Mode (B) • EE

Equipment (C) • Oscilloscope

Measuring point (D) • COMPONENT Y terminal

EVR mode

EVR address

(F1)

(F2)

(F3)

(F4)

(F5)

• Jig code “95”

• "ADJUST01 : **"

• Jig code “21”

• Jig code “18” or “19” (Channel +/-)

• Jig code “3C”

Specified value (G) • 1.00 ± 0.02 Vp-p (terminated)

Adjustment tool (H) • Jig RCU [PTU94023B]

Y level

Missbrauch melden von Frage und/oder Antwort

Libble nimmt den Missbrauch seiner Dienste sehr ernst. Wir setzen uns dafür ein, derartige Missbrauchsfälle gemäß den Gesetzen Ihres Heimatlandes zu behandeln. Wenn Sie eine Meldung übermitteln, überprüfen wir Ihre Informationen und ergreifen entsprechende Maßnahmen. Wir melden uns nur dann wieder bei Ihnen, wenn wir weitere Einzelheiten wissen müssen oder weitere Informationen für Sie haben.

JVC DR-MV1SUC Seite 13

Brauchen Sie Hilfe? Stellen Sie Ihre Frage.

Missbrauch melden von Frage und/oder Antwort

Art des Missbrauchs:

Forenregeln

Neu registrieren

Das Handbuch wird per E-Mail gesendet. Überprüfen Sie ihre E-Mail.

Ihre Frage wurde zu diesem Forum hinzugefügt

Info