Pioneer T-6600 Operating and safety instructions

NEW REEL RASE KIT
REPLACEMENT MANUAL
OPEN REELT\PE DECK
T-ciciclcI
T-Ci1clcI GIT-EiCicIcI
Glr-ci,loo T-siclcI
T-CicIcI
(\I)r,roNEER.
SERVICE DEPARTMENT, INTERNATIONAL DIVISION

Replacement Manual for New Reel Base Kit RXX-081-0
Erratic reel and brake mechanisms of tape decks are usually indicated by one or
more of the following symptoms:
o Mechanical noises induced around the reel base area
o Faulty FAST FORWARD mode - causing tape to stop or slow down
o Tape slackening during FAST FORWARD-STOP switching or during
PLAY-STOP switching
These defect symptoms are eliminated following a replacement of your old reel
and brake mechanisms with the new Reel Base Kit RXX-081-0.
Designed for full compatibility with tape deck Models T-500, T-600, T-6600,
0T-6100and 0T-6600, the New Reel Base Kit RXX-081-0 isfactory-aged for
f ive hours and thoroughly tested for utmost precision prior to delivery.
As applied to the different tape deck models, the New Reel Base Kit RXX-081-0
has a sequence which is as follows:
Model Serial No. Reference No.
T-6100 15001 and after V .* O
T-6600 21101 and after V - O
0T-6100 13251 and after V * O
0T-6600 14651and after V - O
For the correct procedures of replacementand adjustment using the Reel Base
Kit RXX-081-0, carefully follow the steps given in this manual.

DISMANTLING OLD REEL BASE AND
B RA KE M ECHAN ISMS
Preparatory Steps
Observe the following steps corresponding to the different
models prior to dismantling the old reel base and brake
mechanisms.
Caution: Do not unsolder the wire leads of both the
circuit board unit and power transformer. pr inted
Photo (1 )
Photo (2)
For T-500
As shown in the opposite photo (1), remove the following:
O Oscillator unit
g Power transformer
ae Power supply unit
For T-600
As shown in the opposite photo (2), remove the following:
O Power supply unit
@ Power transformer
For T-6100 and T-6600
As shown in the opposite photo (3), remove the power
supply unit:
@ nower supply unit
(Photo: T-6600)
Photo (3)

o
@
Photo (4)
(Fig. 1)
For QT-6100 and 0T-6600
As shown in the opposite photo (41 , remove the following:
@ no*er supply unit
@ eower transformer
(Photo: 0T-6600)
Dismantling Procedure
The following steps for dismantling must be
observed. Each step corresponds to a number in the
illustration (Fig. 1).
O Release the top screw using a plus type
screwdriver (Phillips type) .
(D nemove M3 nut @ and M3 spring washet@.
Note: Keep the M3 nut and M3 spring washer which will be
needed in assembling the new reel base.
@ Holding the shaft (sectionE)with long nose
pliers, remove M4 nut and spring washer in order
to release the reel base shaft f rom the chassis.
@ Unhook and remove the coil spring.
@ Holding the brake pole (section@lwith long
nose pliers, remove M3 nut and M3 spring washer
f rom the brake arm shaft.
The steps above are employed in removing both
right and left reel bases and likewise in removing
the brake assembly f rom chassis.
DISMANTLING NEW REEL BASE
Prior to mounting, the f ollowing operations must
be done on the new reel base. Each step
corresponds to a number in the illustration below
(Fig.2l.
Unhook and remove the coil spring.
Remove M3 nut and M3 spring washer securing
the brake arm shaf t. Remove grease f rom nylon
washer on the reel base mounting panel.
(F ig. 2)

(Fig. 3)
@ Using a plus type screwdriver, remove the
mounting screw.
@ Holding partEtsee illustration) with long
nose pliers, remove M4 nut and M4 spring washer
f rom the panel rear.
Note: Keep the M4 nut and M4 spring washer which will be
needed in mounting the new reel base.
Repeat the steps above for removing both right
and left reel bases of the kit.
MOUNTING NEW REEL BASE AND BRAKE
MECHANISM
For mounting the new reel base, f ollow the
procedure below. Each step corresponds to a
nu mber in the il lustration ( F ig. 3) .
O Using the M 4 nut and M4 spring washer
(previously removed from the panel in step6-
of Fig.2l, mount the new reel base onto the
chassis.
@ Replace the M3 nut and M3 sprinE washer
(previously rennoved in step@of Fig. 'll ,
carefully holding section@at 14 mm (35/64 ip \
as shown in Fig. 3.
@ Using the lVl3 nut and M3 spring washer
(previously removed in step@of Fig. 2l , mount
the brake arm shaft.
@ Hook the coil spring.
Repeat the steps mentioned above for mounting
both right and left reel bases. After mounting of
both reels and brakes is completed, proceed with
the f o llowing steps. T he cap ita lized letters
correspond to sectlons in the illustration ( F ig. 3) .
o Paint lock nuts@and@. ^
o SparinEly apply grease to slide(9).
o Using a piece of cotton dipped in alcohol,
clean outer surfaces of the new reel base
assembly @, the back tension pulby @
and the brake roller @.
Replace removed parts in position as
shown in the previous photos (1 to 4) .

M2.6x4Tappingscrew
Spring switch
Mounting metal
ADDITIONAL OPERATIONS
These additional steps are required for models
T-500 and T-600 only.
Model T-500
There are two spring switches located near the left
reel base as seen from the front. Remove the
leftmost one from the chassis as shown in Fig. 4.
Model T-600
One spring switch
base as seen f rom
shown in Fig. 4.
is provided close to the left reel
the front. Remove this switch as
2-3mm
Fast Foward Cam
) ^" 3mm (Fis. a)
(Fig. 44)
Models T-500 and T-600
Cut section A of bakelite plate as shown in the
illustration (F ig . 4A) ; otherwise it will rub with the
brake arm thereby causing faulty operation.
Cut section B of switch stopper as shown in the
il lu stration ( F ig. 48 ) .
Now replace spring switches in position.
Model T-500 and T-600
O Remove mounting screw from terminal side of
microswitch.
@Shift the microswitch towards the direction
indicated by the arrow.
@Set the contro! lever to PLAY position then
mount the switch drive lever (provided) on the
fast forward cam as illustrated ln Fig. 5.
As shown in Fig. 5A at left, position the switch
drive cam bef ore securing it with mounting screws.
Slide back and secure the microswitch to its initial
position.
5
(Fis. 5)
', Align the inner corner
Bakelite plate
Spring Switch
(F ig. 48 )
Switch drive lever (Fis. 5A )

7"REEL '<-
L\
^\
7 " REEL
I Pull the tension gauge
Back tension
pu I ley
ADJUSTMENT OF NEW REEL BASE
For details of back tension measurement, pleasn
refer to the applicable Service Manua l,
"Adjustment of Mechanism" section. The 'L
adjustment procedure of the new reel base.differs
from that employed with the old reel. The correct
steps should be as follows:
1) With the POWE R switch ON, set the deck to
PLAY mode - the back tension pulley should
engage the reel base. check sectiontrtFig" 6).
This gap mLrst be at least 0.5 mm (1 164 in.) or
more. lf smaller, !f e gap must be widened by
bending sectionltronce the required d imension
of 0.5 mm (1 164 in.) or more is obtained, set
the deck to FAST FORWARD mode to conf irm
that the back tension pulley is completely
separated from the reel base.
2) Adjustment of take-up tension at 19.5 cm/sec.
(7-t 12 ips) - PLAY mode
Use a tension gauge to measure take-up tension.
lf there is a deviation from the rating of 35-
1 009 (0.07 -0.2 lb), repeat adjustment of the
coi I spring until you obtain a rated tension
within the rated coil length of 12-1 4 mm
(15132-35164 in.),
setting the deck to FAST FoRWARD mode,
measure back tension of the supply reel. This must
register within B-169 (0.016-0.032 lb). lf
lf otherwise , readjust the adjustment screw f or
tension brake (refer to sectionffiof Fig. 8). .
3) Adjustment of take-up tension - FAST
FORWARD mode
Load a tension test reel on the base a nd set the
deck to FAST FORWARD mode. Adjust the
tension adjusting screw (section@of Fig. 8)
in order to obtain a starting tension of
approximately 22Og (0.4 lb) at FAST FORWARD
Once this value is obtained, continue
sliding the reel for 30 seconds (no more) and
make f inal readjustment of the screw to obtain ._-
the correct FAST FoRWARD take-up tension
rating which should be within 180-200g (0.30-
o.4 lb)
c a u t i o n' 3.: ff;i i,i, :";?l' n :J i : : i; :',: iJ;i fnl o
sl id i ng su rface thereby causing interf erence \
take-up tension at FAST FORWARD.
6
f f o.5mm
r-- fi /64 in.l
14 mm
(15132'-'35164 in.)
or more.
(Fis.6)
(Fis. 7)
6
6
tr
J
>.- \
ffi\6
Y\+ (Fig. 8)

-^-
No. 7 reel
TEST ITEMS AFTER ADJUSTMENT
1) Conf irm proper PLAY operation f ollowing these
test steps:
o Using a test reel, set the deck to PLAY. Allow
the tape to run a while bef ore changing the
direction. This process must be repeated two or
th ree times.
o Do this test once more after reversing right and
left reels.
lf any erratic operation is observed with the reel
base, the P LAY take-up tension m ight be incorrect
and must be f urther adjusted (see Fig,7 on take-up
tension).
2l Conf irm normal take-up tension at FAST
FORWARD and that there is no tape slackening
durinE STOP- FAST FO RWAR D switch ing.
o Repeat STOP- FAST FO RWA R D switch ing
severa I times.
o Do this test once more after reversing right
and left reels.
lf the reel base shows any erratic operation, the
FAST FORWARD take-up tension and FAST
FO RWAR D back tension require f urther
readjustment (see Fig. B).
3) Confirm normal tape functioning (no slackening)
during FAST FO RWAR D-STOP switching.
o Repeat FAST FORWARD-STOP switching
serveral times"
o Repeat the test after reversing the right and left
reels. Erratic operatioh, if any, can be corrected
following a readjustment of the 0.5 mm
(1 164 in.) gap (see Fig. 4l and/or cleaning the
contact surfaces of both reel base and brake
roller with alcohol.
'ol
l.i
It!
;,'d
(Fig, e)
5 reel
(Fig. 1 0)
(Fig. 11)

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Printed in Japan