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Panasonic SG-2050L Service Manual page 7

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ALIGNMENT INSTRUCTIONS (TAPE RECORDER)
Notes:
Function Selector
* Refer to Fig. 12.
Balance Control
ADJUSTMENT
REMARKS
Depress push buttons PLAY and REC at the same time.
|
Connect positive side to TP6
T801
Adjust T1801 for maximum indica-
AC BIAS OSCILLATOR | (+) and negative side to Lug 21
(AC Bias OSC)
tion of VTVM-1.
& ERASE
(—).
MIN.
VR801
Adjust VR801 for 13V reading on
(Refer to Fig. 12)
(Voltage Control)
VTVM-1.
.
Connect positive side to TP8
:
|
;
'
3
g. |p Bine Osc EA TOR | sad tecative side to. TP7.
MIN.
=4803
| _ |
Adjust L803 for mV reading on
& ERASE
(Refer to Fig. 12}
(AC Bias Trap Coil)
| VTVM-2.
:
Connect positive side to TP10
|
any
Adjust L802 for 5mV reading on
AC sae ERASE
and negative side to TP9.
x
(AC Bi ee
Coil)
VTVM-3.
(Refer to Fig. 12)
iene al
nat
Repeat steps (2) and (3).
AC BIAS OSCILLATOR |
snd negetive sid Sa
|
T3801
Adjust T801 for maximum indica-
& ERASE
(Refer to Fig, 12)
;
oN
(AC Bias OSC)
tions on VTVM-2 and 3.
Connect positive side to TP6 (+)
Adjust VR801 for 13V reading on
|
(Refer to Fig. 12)
g
Repeat steps (2) and (3).
. Cement part of semi-fixed volume control (VR801), as shown in Fig. 13.
. Do not touch R/P head and Erase head when adjusting.
. As two maximum
points is obtainable when adjusting the L803 and L802, adjustments should be done when the core is properly
screwed
in.
Control
VR801
AC Bias
@
osc
| WT
802] () | Trap coil
Voitage|
C——
(R)
——
ff
T801
AC Bias
21)
OSC Coil
(3)
co
= 4
(22)
TP10
(R402 1022)
cS
(1)
TP7
(23)
|
(2) TPQ
TP8
(R401
10}
Fig. 12 ALIGNMENT
POINTS
RECORD/PLAYBACK
HEAD AZIMUTH
Receni/Playoaaetead
ADJUSTMENT
ecord/Playback
Hea
Playback a Standard Alignment Tape and turn head
adjustment screw for maximum
loudness.

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