TAPE DECK TORQUE & REPLACEMENT
3. Torque Measurements
ITEM
TAKE-UP TORQUE
BACK TENSION
TAPE TENSION
PLAY :Tw211 lA(FWD)
PLAY :TW211 lA(FWD)
Driving power cassene
Test cassene
PLAY :TW2121A(REV)
PLAY :TW2121A(REV)
TW.2412(FWD)
F.FWD / REW,TW2231
REW:Torque Gage
TW-2422A(REV)
PLAY
30- 600r.cm
2.0 - 5.Ogr.cm
> 80g
r
F.FWD
I
70- 1400r.cm
I I I
r
REW
I
70- 140gr.cm
I I
I
4. Replacement of Head
Lead Connection Method of Rotary Head
1. Fix the leads from the head at the stem with the rubber adhesives.
2. Twist the fixed leads.
1
5. Replacement of Motor and Belt
a
TUNER ADJUSTMENT
1.
FM BAND
Antenna :75 ohm unbalanced, Mod.latmn :1 kHz, Dev. : f 22.5kHz (MONO) . + 22.5kHz (MAIN) ~ 6.75kHz(PlLOT)
SG RF Leve!(Ogen Vollaoe) : dBtiV EMF w!th 75 ohm d,rect connection
step
Tuning
Items
Input Condition
Output Condilion
Frequency
Measure Input
Measure
output
Pans
Standards
1
COVER
87.5MHZ
D@tal
TP105(H)
. .
Confrm 1.0-1 .4V
... ...
108,0MHZ
... .. .
Voltmeter
TP106(E)
. .
Conhrm s 8.5V (about 6.3V)
2
* 90.OMHZ
FM SG FM ANT
Tp231(L) . . .
TRACKING
VTVM
Output : Maximum
m-- ,,------
TP232(R)
Adjust to near ,_
I I
I
lutiuMHz I
I
Term,nal I U..,,,u...w I ~n...,r, I ------ i
m I.ti.t sensmww
I
● ‘TP106 is no earth pOmL ** : Adpmt m the modulation oft
Tuner Mtie : AUTO STEREO
Z AM BAND
Antenna: IRE LCOD.Modulation: 1kHz 30°/0
step
1
2-.,
3
4
LW 144kHz
Digital
TP105(H) L2154
COVER
290kHz
...... ... .. .
Vo::ml?ter
TP106(E)
......
Standards
Confirm1.0-
1 .4V (about 1.2V)
Confirm s 8.5V (about 7.EW)
Output: Maximum
Confirm to new
dw etlective wwitivitv.
Confirm 1.3-
1.6V (about 1.6V)
Confirm s 8.5V (about 6.SV)
LW
162kHz
AM SG
LOOP VNM
TP231(L) ~zls, Outpul: Maximum
TRACKING
Tp232(R) cT~5,
Confirm to neer
279kHz
ANT
02cil10scop9
TP233(E)
the ettactive sensitivity.
3. PARTS LOCATION
.-
FM ANT
‘4
-r
(.,,,$
n ,P,,,(nch)
TP233(E)
TP231(L-ch)
\r--l
ak+&Qsii”
L2151 Lfi52 C1252 C1251~L2153 L2154
TuNER / TAPE OECK AMPLIFIER P.C e
AM L;OF’ ANT
EXPLODED VIEW (SPEAKER UNIT) _.
-20-
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