JVC TD-W777A - Head Azimuth and Electrical Adjustments

TD-W7 7 7 A/B/C/E/G/J/U
Adjustment
Standard
value
Adjusting
point
Remarks
. Connect an electronic voltmeter to the
LINE OUT terminals.
. Playback the VTT 703 test tape.
. Adjust the head angle with the screw
(FWD and REV) until the reading of
the electronic voltmeter becomes maxi-
mum for both channels.
Adjusting
Head
azimuth
Adjust the head angle with the screw
® until the reading of the electronic
voltmeter becomes maximum for both
channels.
Screws
Maximum
(FWD, REV)
Deck
Deck
Fwo
Deck
REV Adj.
FwOo
3. Electrical adjustments location
e Main Amp. P.C. Board (parts assembly side view)
(Turning in the direction of the arrow increases the level.)
DECK A
OECK A
b,
FRONT
10 (No. 4292)
HIGH SPEED Adj
NORMAL SPEED Adj
Ene HIGH SPEED TP
When high speed adjustment
connect the bus wire to ground
DECK B
HIGH SPEED Adj
DECK B
NORMAL SPEED Adj
Leh
DECK B PB EQ Adj
Rech
BIAS. CURRENT Adj
cel
BIAS CUT
7] BIAS FREQUENCY Adj
Fig. 7-1
ot:
e) RIO? 1 ch
PB LEVEL Adj
DECK A
rs R
s ae 202 pop
, PB LEVEL Adj
VRIOI
ich
PB LEVEL Adj
DECK 8
a
; WF
ov
ich
~1d8
448
20!
Rech
PB LEVEL Adj
VRIO3
Lch
REC LEVEL Adj
DECK B
oe 03
Leh
REC LEVEL Adj