Pioneer CT-7R User manual

0) rrloNfeen!-
Ea
a
aDER
NO.
T-667-O
u
35
40
42
49
51
58
60
MODEL
CT-7R
COMES
IN SEVEN
VERSIONS
DISTINGUISHED
AS FOLLOWS:
o Thisservice
manualisapplicable
to the KU Çpe. For servicing
of the oûrertypes,please
additional service
manual.
r Forthecircuit& mechanism
description,
please
refer
to the supplement
of cT-7R
(ARP-æ1-0).
o ce
manuer
d'instruction
se
refère
au
mode
de
régrage,
en
fançais.
o Este
manual
deservicio
trata
der
método
ae
aiuËe
Ëilriil;n espaiïor.
CONTENTS
1. SPECIFICATIONS 2
2. FRONTPANEL
FACILITIES ....... 3
3. DISASSEMBLY 5
4. PARTSLOCATION 7
5. EXPLODED
VIEWS
AND PARTS
LIST. . . . . . 9
6. BLOCK
DTAGRAM t6
7. p.c.
BoARDSCONNECTTON
DTAGRAM le
8. SCHEMATIC
DIAGRAM 27
9.
10.
11.
12.
11.
12.
11.
12.
PACKING
ELECTRICAL
PARTS
LIST
. . .
MECHAN
ICAL
ADJUSTM
ENTS
.
ELECTRICAL
ADJUSTMENTS
.
nÉcleces
nltÉceruroues
..
..
nÉclacesÉlecrnrouEs
.
..
AJUSTES
ruecÂrurcos
A"lusrESetÉctnrcos
......
22OV and 24OV (Switchabtel
2NV and
2ztOV
(Swirchabte)
12OV,22OV and 2zlOV
(Switchabtel
12OV,2nV and
24OV
(Switchabtel U.S.
military model
YZ O
MAY I98I

,t.
spEclFlcAlfôNs
Fast
Winding
Time . . . APProximatelY
90 seconds
(C-60
tape)
. . . . . Nomore
than
0.04%
(WRMS)
-20d8 recording:
. . - .2Oto 16,000H2
Miscellaneous
PowerRequirements "" AC12OV/60H2
PowerConsumption " ' 43/Vatts
Dimensions - - -42O
(W)
x 99'5 (Hl x 270
(D)mm
16-9/16
{W)
x 3-15/16
(H)
x 10-5/8
(D}
in'
Weight
(without
package) 5'3ks
(l2lb)
Furnished
Parts
Connection
cord
with pin plugs " " " ' 2
Operating
instructions
NOTE:
Specifications and the design subiect to posible modifications
without notice due to improvements
NOTE:
1.
Reference
rapes:
ï::ïlii tt: DrN
45513/BLArr
CrOz
DIN45513/BLATTT
(CrOz)
orequiv.
2. ReferenceRecording Level: Meter OdB indicating
level (160nwb/m magneticlevel = Philips cassette
reference
level)
3. Reference
Signal:
333H2
WowandFlutter
Frequency
Response
Normal,
LH taPes
Chromium
dioxide
tape (25
to 14,000H2
J3dB)
.20to 18,000H2
(25to 16,000H2
r3dB)
(OdB
recordin
g;25 to I0,000H2)
Metal
tape.... 20to 20,000H2
(25
to 17,500H2
È3dB)
(OdB
recording;25
to 15,000H2)
Siganl-to-Noise
Ratio
Dolby
NROFF More
than
59dB
Dolby
NRON . . " " BType
more
than
69dB
CTYPe
more
than79dB
(at
SkHz)
Output (
Reference
level/Loadimpedance)
LINE
(OUTPUT)
x2 " '450mV/50kQ'Pin
jack
Headphones ' 60mV/8Sl'6mmdiam'iack
Subfunctions
a Auto reverse,
auto repeat
functions
. MS/SKIP
(Music
Search/Skipl
system
. REC
MUTE
switch
o Dolby NR system (B tvpe/C tvpe/OFF) with LED
indicator
lamp
o Stand'by mechanism
with unattended recording and
playback
o 3 positionAuto tape
selector
(NoRM/CrozlMETAL)
. Full automatic
stopmechanism
. MEMORY
STOP
function
(FF,REW)
. 2 colordigital
level
meter
r 3 digit mechanical
tape
counter
o lC-based logic
control
o Cassette
compartment
illumination
. INDEXSCAN
system
o MUSIC
REPEATsystem
O SKIP
. BLANK SEARCH
SYSTEM
4. Wow & Flurter: o JIS [3kHz,
compensation
(weightedl,
rms
valuel
5. Frequency ResPonse:
' Measured
DOLBY NR OFF, leveldeviation
indication.
6. Signal
to NoiseRatio: ' Measured
at the third har'
monic
distortion3%
level,
weighted.
7. Sensitivityl Input level(mV) required
for reference
recording level with input (REC) controls set to
maximum.
8. Maximum
Allowable
lnput:While
decreasing
settings
of input (REC) level
controls
and increasing
levelat
input iacks,
this isthe maximuminput level
(mV) at
the point where
recording
amplifier
outputwaveform
becomes
cliPPed.
9. Reference
Output Level:
Playback
output level
when
meter
indicates
odB.
10. Thismodel
doesn't
employ
with arecording/playback
connector
(DlN-type).
I
with acoustic
at -20d8 level,
is tGdB without
(

IndicatorAssembly
Removal
Removethe two hooks
O of the
panel
stayand
pull the indicator assemblytoward you.
Level
MeterAssemblyRemoval
Remove the hook @ of the panel stay and
pull the levelmeter assemblytoward you.
Gontrol Switch AssemblyRemoval
Removethe two hooks O of the panelstayand
pull the control switch assembly
toward you.
Levelmotor assemblyremoval
Controlswitch
assemblV
Levelmeter assembly
Fig.
3-3 Disassembly
Head
AssemblyRemoval
1. Remove
the stopper.
2. Turn the head assembly clockwise (FWD
direction).
assembly
CapstanBelt Removal
1. Remove the four screws €) ana rcmove the
capstan
motor control assembly.
2. Remove the capstan belt from the capstan
assembly.
I
".-o
_l
-d
__) .
- Sub caostan
assemblv ldlerPulleY
assemblY
Fig. 3-5 Capstan belt removal
.,O
Capstlr motor
.control at*mbly
e@ I
o
3.
Fig.
3-4 Headassemblyremoval

2.FRONT PANEL FACILITIES
o powen
switch
The powercomeson when this switchisdepressed;
it is
turned
off when
theswitchisreleased.
@ EJECT
switch/cassettedoor
The cassettedoor openswhen this switch isdepressed.
NOTE:
Thedoorwill not open when the tape is running or when the
pausefunction is working,
@ Tape
COUNTER/RESETswitch
The tape counter indicates
the tape's
traveling
position.
Depressthe reset
switchbefore
recording
or playback
to
reset
thecounterto "000."
e LEVELmeters
Theseindicatetheinputor output level
duringrecording
or playback.
@ Playbackfunctionswitches
Playback
operations
canbe performed
when the sections
withthefollowing
symbolsaredepressed:
É (fastforwardl: The tape runsat high speedfrom
Cif (direction):
PLAY:
STOP:
left to right.
The tape runsat high speedfrom
rightto left.
The direction of the tape travel is
reversed
(even
in the pause
mode).
Thetapeis
played.
The
tape
is
stopped.
@ Recording
function
switches
Recording
operationscanbeperformed
whentheswitches
with thefollowing
symbolsaredepressed:
PAUSE: The tape travel (during recording)
can be temporarily suspended
(re-
cordingstandby
mode).Depress this
switchagainto resume
recording.
NOTE:
The tape will not stop whan this switch îs depreæd during fast
forqard or rewind operations.
REC
MUTE: Recording
can
bestarted.
Thisenables
unrecorded
blanksto be
created between programs for con-
venient play functions (MS/SKlp,
MUSIC
REPEAT, INDEX SCAN,
BLANKSEARCH).
This automaticallysearchesfor the
remainingpart of the loadedtape
which has not been recorded.
BLANK
SEARCH:
@ rus/srlP
sritch
This switch isfor skippingthe program
now beingheard
and finding the start of the next program.When this
switchisdepressedduring play (ON; MS/SKIPindicator
lightsl and then the fast forward switch (rewindswitch
whentraveling in otherdirection)isdepressed,
play
starts
from the next program.
Whenever
there is a longintervalbetween
tapeprograms
(unrecorded
blanksof over I seconds),
the tapeisauto-
matically
fast
forwarded
and
playback
resumes.
OHO^EI srÊFEo cassETTE TAÆ æcK cr 7H
f,t tr'
_8.
-c
':f,."

FRONT
PANEL
FACILITIES
Indicators
below
show
theON-OFF
position
of each
switch
Forward running
ind,
PAUSEind. (T-0-dl
E
oÆtaTroN|\æ
Recording ind.
Recording MUTE ind.
Tape travel ind.
MUSIC
REPEAT
ind.
POWER
ind.
\\_
Tap€ travel ind, --- -Y- | Ê
---d\o'^.="
l4
Reverse
running ind. -*oj€ -
= !5â æ'-q:=,c REæar
AUTOTAPE
SELECTOR
ind.
DOLBY B/C type ind.
@ fNDEX
SCAN
switch
This plays
only the start of the recorded
program
for
about 7 seconds
and then fast forwardsthe tape.
When
usedin combination
with the rewind ( << ) switch,
this
operation
can
beperformed
withthe
tape
being
rewound.
@ MUSIC
REPEAT
switch
This repeats
only the program
now being
heard
for up to
eight
plays(ON;
MUSTC
REpEAT
indicator
tights).
@ INPUT fevel
conûols
These
are used
to adjust
the input signal
level
during
recording.
The inside
left channel
and
outside
right chan-
nel
controls
can
be
used
separately.
@ MlCjacks
Insert
the microphone
plugs
(L and R) into these
jacks
when
recording
with microphones.
@ PHOrueSjack
Insert
the
plug
of rhe
stereo
headphones
into
this
jack.
@ ruOOe
selector
: : When
thetape
has
been
wound
up
on
one
of the
reels,
it automatically
stops
traveling
(oneride
travel
).
.= : The tape
starts
moving
in theforward
direction,
the direction
is reversed
at theend
of thetape,
the tape
.starts
moving
in the reverse
direction
and
thenstops
at theend{two-side
travel}.
cr : The
tape
is
repeatedly
played
back.
The repeat
function stops
whenthe direction
of
tape
travel
has
been
reversed
eight
times.
@ f trUen start
switch
This
switch
is
oærated
for unattended
recording
or play-
back
using
the
timer.
REC: For automatically
recording
at the lime set
on
the
timer.
OFF: For
when
the
timer
is
not
being
used.
PLAY: For automaticplayback
at the tim6 $t on the
timer.
@ rupx
FTLTER
switch
Depress
this
when
recording
anFM
stereo
brCd$st using
theDolby
noise
reduction
system.
@ ooLev NRB/c typesetector
Depress
this to select
type B or type CDoltry
Nfi system
with the DolbyNR switch
in theON position.ffheindi-
catorBorClights).
@ OOLAV
NR
ON/OFF
switch
Depress
this
to the
ONposition
when
recording
Or
playing
back
a
tape
with theDolby
noise
reduction
,ia*.
@ rueruoRY
ON/OFF
switch
When
thetape
is
to be
stopped
automatically
atadesired
position,
use
this
switch
along
with the
tape
âunter/reset
switch and rewind switch (fast to.*arj ,Witd,, Ouring
reverse
tape travel).Normally, it is kept at ths released
(r OFFI
position.
The
word
"Dorby" and Do are
trademark
of Dorby
Laboratories
corporation.
Noise
Reduction
system
manufactured
unde.
licens.
fromDorby
Laboratories
Licensing
corporation.

2.
3.DISASSEMBLY
DoorAssembly
Removal
1. Depress the EJECT button and open the
cassette
holder.
Remove the door assembly from the hooks
attached to cassette holder with the small
screwdriver.
Remove the spring with the small screwdriver.
Slid the door assembly to the left and remove
it pulling toward You.
Smallscrewdriver
Fig.
3-l DoorassemblY
removal
BonnetRemoval
Remove
the four screw l)
lndicatorPanel
Removal
1. Push
the two hooks @ of the panel
staywith
the smallscrewdriver.
2. Pull the indicator panel toward you and re-
move
it.
Sub
panel
R Removal
1. Pulloff the INPUTknobs.
2. Push ttre four hooks @ of the panel stay
with'smallscrewdriver.
3. Pull the sub panelR toward you andremove
it.
SwitchEscutcheon
Removal
1. Pushthe three hooks O of the escutcheon'
2. Pull the escutcheon
toward you and remove
it.
Mechanism
AssemblY
Removal
1. Remove
thecounter
belt'
,:. Remove
the six screws @
lndicator Panel removal
Pânel
stay
lndicator Panel
Sub Panel Fl
3.
4.
)
Sub PanelR
Switchescutcheon
Switch esoJtcheon removal
o
V
I
o
,
Knobs
(INPUT)Fig.3'2 Disassemblv s[6-panet R removal

T
o
B
I
5. EXPLODED
VIEWS
AND PARTS LIST
5.1
MECHANISM
ASSEMBLY
A
I
o-
C
D
Îp
I
r09
'Î',
r
#{

48
ù
87
--t
I
\6/ 104
0

4. PARTS LOCATION
FrontPanel
View
Knob
C (FF. REW)
RAC-209
Knob (EJECTI
RAC-208
Door lens
Switch escutcheon
R
NL.338
t* Door panelassembly--
RX8.595
Knob (POWER)
RAC-195
Knob
G (MEMORY)
RAC-196
Indicator
panel
RN
L-357
Front View with Front Panel
Removed
* Indicator
æsembty
(A)
RAW-162
** Counter
RAW-167
Cassette
plate assembly
RXX.338
Erase head
RPB-095
*t Head
assembty
(REC/PB)
FXX.333
Erasehead
RP8-094
Push
switch
RSG-1
26
NO?ES:
c Parts without parl number cannot be supplied
e The .t marh found on some component parts indicates thc împortance of the
safety factor of the part. Therefore, when replacing, be sure to usc parts of identical
designation.
c For your Parts Stoch Controt, the fast mouing items are indioated with the marhs
** and *
** GENEÀALLY MOVES ,FAS"ER THAN *.
This classification shall be adjusted by each distributor because it depends on model
number , temperature, humidity, etc.
Knob
D (REC)
RAC-193
Knob E
RAC.194
o
\9
o
Knob ilNPUT R)
I nAA-36r
I
Knob
(INPUT
L)
RAA-362
Knob
(MODE)
RAA-359
Subpanel
R
R
N
1.378
Knob E
RAC.192
KnobD (PLAY, STOP)
RAC-'10
Knob
S (DlR
ECTTON)
RAC-[11
** Flotary
switch (A)
RsB-029
Vaibbl0 resistor (tNPUT)
RCV-CXI6
tfr Jack assembly
R
KN.O75
Èi notary switch (Bl
nsB-O30
* Push
switch
(B)
RSG-126
FunotiolN
switchassembly
RW$f
138
* bw| meter
æsembly
RAW-161
**

?op
Ub**ltfrBonnet
Removd
Remote control æsemblY
I t* Fuse
(2A)
A ft Fuse
(1.2
REKO59
[ * eovrnr
transformer
(1
RTT.239
Reel motor control æsembly
RWX.491
Capstan
motor control
æsembly
C
RWX489
Panel stay
RNT-OI7
Mechanism
assemblY
Rear
Panel
View
Remote
control socket
RKP-222
Main chassis
Terminal
(LINE)
RKB.O18
Motherassembly
RWX497
NRassembly
(Ll
Rwx-499
DOLBY
NRassembly
(Rl
,RWX-49S'
Amplifier
assembly
RWF-O95
Jack assembly
RWX.498
Switch æsembly
Meter drive assembly
RWX.sOO
Bonnet
RNA.563
Strain relief
REC-376
(
-