Pioneer Ct-91 User manual

Q)

PIONEER’

The

future

of

sound

and

vision.

Service

SALES

IED|

STEREO

CASSETTE

DECK

e

This

manual

is

applicable

to

the

CT—91/KU/CA

type.

ORDER

NO.

ARP1656

CONTENTS

if

SPECIFICATIONS

we

W

event

neem

eccer

use

ceecorceesaeeasasssnevies

2

2.

PANEL

FACILITIES

Cree

rececececccccesseneesccccsecceeseces

3

3,

EXPLODED

VIEWS

AND

PARTS

LIST

«+--+

7

4,

PACKING

4)

(0.6

0

6'0°6:6

[00

e'0's/e

wb.0'e

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eselciesicsioee

14

5.

SCHEMATIC

DIAGRAM

Seer

cneseececcetoverecseravceeas

15

6.

P.C.

BOARDS

CONNECTION

DIAGRAM

-----19

7,

ELECTRICAL

PARTS

LIST

ev

eceencecccerseserenncsece

23

8.

ADJUSTMENTS

PYEPPeSTETTeTePee

reece

eer

re

errr

reer

r

eerie

28

9,

SAFETY

INFORMATION

De

ceererecesescencereececesenes

33

PIONEER

ELECTRONIC

CORPORATION

=

4-1,

Meguro

1-Chome,

Meguro-ku,

Tokyo

153,

Japan

PIONEER

ELECTRONICS

SERVICE

INC.

P.O.

Box

1760,

Long

Beach,

California

90801

U.S.A.

PIONEER

ELECTRONICS

OF

CANADA,

INC.

505

Cochrane

Drive,

Markham,

Ontario

L3R

8E3

Canada

PIONEER

ELECTRONIC

[EUROPE]

N.V..

Keetberglaan

1,

2740

Beveren,

Belgium

PIONEER

ELECTRONICS

AUSTRALIA

PTY.

LTD.

178-184

Boundary

Road,

Braeside,

Victoria

3195,

Australia

TEL:

[03]

580-9911

©

PIONEER

ELECTRONIC

CORPORATION

1988

dig

cen?

ance

waa

We

can

1.

SPECIFICATIONS

SYSIEMSS:

sheen

intios

oe

eRe

4

track,

2-channel

stereo

Heads...........

Laser

amorphous

playback

head/

Hard

parmalloy

recording

head

combination

x

1

Erasing

head:(Ferrite

head)

x

1

MOlOIS

cars

acs

bene

iad

sede’

DC

servo

capstan

motor

x

1

DC

reel

motor

x

1

DC

auxiliary

motor

x

1

Wow

&

Flutter...

00.00.00

ee

0.022%(WRMS)

+

0.052%

(DIN)

Fast

winding

time............

Approximately

80

seconds

(C-60

tape)

Frequency

response

(—

20

dB

recording)

Metal

tape...

6...

eee,

20

Hz

to

23,000

Hz

Chrome

tape

.................0..

20

Hz

to

21,000

Hz

Normal

tape....................

20

Hz

to

21,000

Hz

Signal-to-noise

ratio

.

DOLBY

NR

OFF..................

More

than

60

dB

Noise

Reduction

Effect

DOLBY

NR

B

type

ON

....

More

than

10

dB

(at

5

kHz)

DOLBY

NR

C

type

ON

....

More

than

19

dB

(at

5

kHz)

Harmonic

distortion

..........

No

more

than

0.6%

(0

dB)

IV

OUG

oee

ce

te

Cutt

Sets

eee

Woe!

tanane

Ge

Sat

atl

Sete

LINE:

67

mV

(Input

impedance:

50

kQ)

OUIDUEs

ew

noes

Nae

ee

out

LINE:

316

mV

(Output

impedance:

1.4

kQ)

Headphones:

0.8

mw

(Load

impedance

82

VR

Max.)

Subfunctions

*

3-mode

counter

(4-digit

electronic

counter)

e

Auto

Tape

Loose

Canceller

function

¢

Meter

range

selection

(WIDE/EXPAND)

e

Auto

Monitor

function

(TAPE/SOURCE

auto

selection)

e

Auto

Meter

Warning

zone

Selector

¢

Power

Eject

(OPEN/CLOSE)

¢

Music

Search

(over

+15

selections)

e

Tape

Return/Return

play

*

Headphones

jack

(with

volume

control)

e

Bias

control

°

MPxX

filter

e

Auto

Space

Recording

Mute

e

Auto

Tape

Selector

e

Playback/Recording

timer

start

function

*

Dolby

Noise

Reduction

(B

Type/C

Type)

e

Dolby

HX

Pro

system

¢

FL

Level

Meter

Peak-hold

function

(15

+

1

segments)

e

System

remote

control

available

Miscellaneous

Power

Requirements

U.S.,

Canadian

models

........

....,

AC

120V,

60

Hz

Power

Consumption

U.S.,

Canadian

models...

00.00.00.

ee,

25W

Dimensions

...........

457(W)

x

133.5(H)

x

372(D)

mm

18(W)

x

5-1/4(H)

x

14-5/8(D)

in

Weight

(without

package)...........

10.8

kg

(23

Ib

13

02)

Accessories

Operating

instructions...

2.2.00...

ee.

1

GOMMECIING

COPS

sce

ice

cay

te

seat

aid

das

2

Senne

ae

pees

2

Control

Cord

yn

ox

aid

svanle

sign

bod

dete

OST

e

es

alas

1

NOTE:

Specifications

and

design

subject

to

possible

modifications

without

notice,

due

to

improvements.

2.

PANEL

FACILITIES

Onin

STEREO

CASSETTE

Deck

UT")

s

POWER,

@

POWER

switch

Turn

the

power

on.

After

the

power

is

turned

on,

the

dotted

lines

in

the

level

meter

flash

for

approximately

4

seconds

until

the

circuits

of

the

unit

have

stabilized.

The

unit

will

not

operate

during

this

time

even

if

one

of

the

operation

buttons

is

pressed.

@

Cassette

door

OPEN/CLOSE

button

NOTE:

If

the

cassette

door

is

closed

while

the

unit

is

turned

OFF,

and

the

power

is

then

turned

ON,

the

cassette

door

may

open

and

close

after

pressing

one

of

the

operation

buttons.

This

occurs

when

the

microprocessor

resets

the

door

mechanism

to

its

initial

state

and

does

not

indicate

any

malfunctioning

of

the

unit.

©

COUNTER

selectors

RESET:

Resets

the

counter

indication

to

''0000"'

MODE:

Each

time

this

button

is

pressed,

one

of

the

following

three

modes

is

set

in

sequence.

e

Normal

tape

counter

e

Time

counter

(displays

the

elapsed

playback

or

recording

time)

e

Remaining

time

counter

{displays

the

remaining

time

of

the

tape)

@

TAPE

CAPACITY

selector

To

indicate

the

correct

time

value

in

the

remaining

time

counter

mode,

this

selector

must

be

set

in

accordance

with

the

tape

used.

eens

C90

~

C80L

>

C60

>

C46L

3]

@

TAPE

RETURN

button

This

button

is

used

in

the

tape

counter

mode

to

fast

forward

or

rewind

the

tape

to

a

point

near

the

counter

reading

'‘0000".

@

DOLBY

NR

selectors

ON/OFF:

Used

to

turn

the

Dolby

NR

system

circuits

ON

or

OFF.

B/C:

With

the

ON/OFF

switch

in

the

ON

position,

Dolby

NR

B

or

C

can

be

selected

with

this

switch.

@

MPxX

FILTER

switch

This

switch

is

effective

only

during

recording

with

Dolby

NR.

©

REC

LEVEL

control

©

REC

BALANCE

control

@

TIMER

mode

selector

REC:

Set

to

this

position

for

timer

recording.

PLAY:

Set

to

this

position

for

timer

playback.

OFF:

When

the

timer

is

not

to

be

used,

set

the

selector

to

this

position.

(Normally

leave

the

selector

in

this

position.)

@

PHONES

LEVEL

control

@

PHONES

jack

@®

Cassette

door

@

Rewind

(<<)

button

Press

this

button

to

rewind

the

tape.

When

the

button

is

pressed

during

playback,

the

tape

rewinds

to

the

beginning

of

the

current

selection,

and

playback

starts.

If

the

button

is

pressed

twice,

the

tape

rewinds

to

the

selection

before

the

current

selection.

@®

Stop

(

Mf)

button

@

Play

(>)

button

@

Fast

forward

(>>)

button

Press

this

button

to

fast

forward

the

tape.

When

the

button

ts

pressed

during

playback,

the

tape

advances

to

the

beginning

of

the

and

playback

starts.

If

the

button

is

pressed

twice,

the

tape

advances

to

the

selection

after

the

@

Recording

(

@

)

button

When

this

button

is

pressed,

the

unit

is

set

to

one-touch

recording

pause

(recording

standby

mode).

Press

the

PAUSE

button

to

start

recording.

@

Pause

(

m

)

button

The

tape

transport

can

be

momentarily

stopped

by

pressing

this

button

during

recording

or

playback.

Press

the

button

again

to

restart

operation.

The

button

does

not

operate

during

fast

forward

or

rewind.

@

Record

muting

(

©

)

button

Press

this

button

to

create

an

unrecorded

space

during

recording.

@

METER

RANGE

selector

Selects

WIDE

or

EXPAND

as

scale

range

for

the

level

meter.

@

MONITOR

selector

For

monitoring

the

sound

during

recording,

this

switch

can

be

used

to

switch

between

source

sound

and

just

recorded

sound.

@®

Rec

BIAS

control

It

is

possible

to

adjust

the

bias

according

to

the

tape

used

and

the

source

to

be

recorded.

OPERATING

DISf

—

@)

Counter

«

The

counter

has

e

When

the

cassett

is

displayed.

¢

During

music

sear

(2)

TAPE

RETURN

Lights

up

during

tac

8)

Tape

transport

44

Lights

up

wt

&

=

Lights

up

du

pause

andr

Pr

©

Lights

up

wi

ge:

Lights

up

in

(4)

MUTE

Flashes

and

lights

d

(S)

REC

Lights

up

during

rec

6)

Warning

zone

Changes

according

t

meter

range.

®

Monitor

source

TAPE:

Recorded

SOURCE:

Original

sc

Scale

for

WIDE

ding,

this

switch

can

be

nd

just

recorded

sound.

1g

to

the

tape

used

and

OPERATING

DISPLAY

I

=

68.

-35

-28

PEAK

HOLD

ri

f=

Pn

ae

eae

ae

[_TAPE'RETURN

|]

<<

D>

PP

HI

[rec]

CO

in

init

mitt

nit

nt

ttt

nin

tit

vn

vin

{

MUTE

|

@)

Counter

e

The

counter

has

three

display

modes.

e

When

the

cassette

door

is

opened,

the

message

‘‘OPEN"

is

displayed.

e

During

music

search

the

number

of

selections

is

displayed.

(2)

TAPE

RETURN

Lights

up

during

tape

return

operation.

3)

Tape

transport

modes

“4

=

Lights

up

when

rewinding

the

tape.

®

~.

Lights

up

during

playback,

playback

pause,

recording

pause

and

recording.

Flashes

during

music

search.

»P

—

Lights

up

when

fast

forwarding

the

tape.

wa

=:

Lights

up

in

the

pause

mode.

(4)

MUTE

Flashes

and

lights

during

recording

mute

operation.

(&)

REC

Lights

up

during

recording.

6)

Warning

zone

Changes

according

to

the

type

of

tape

used

and

to

the

selected

meter

range.

®

Monitor

source

TAPE:

Recorded

sound

SOURCE:Original

source

sound

Scale

for

WIDE

range

9)

Level

L:

Left

channel

R:

Right

channel

The

QO

mark

indicates

the

reference

level

for

the

Dolby

NR

system,

REMAIN

Lights

up

when

the

remaining

time

counter

mode

is

selected.

(1)

LARGE

HUB

Lights

up

when

the

TAPE

CAPACITY

selector

is

pressed

in

the

remaining

time

counter

mode,

and

the

Large

Hub

mode

is

set.

(12)

TIME

COUNTER

Lights

up

in

the

time

counter

mode.

(3)

DOLBY

NR

B/C

Indicates

the

selected

Dolby

Noise

Reduction

system,

B

or

C.

0

dB

position

for

EXPAND

range

(15)

MPX

FILTER

Lights

up

when

the

MPX

FILTER

switch

is

pressed

while

the

Dolby

NR

system

is

ON.

0

dB

position

for

WIDE

range

G2)

Tape

type

The

unit

will

automatically

detect

and

display

the

tape

type

(NORMAL/CrO2/METAL)

of

the

cassette

inserted.

When

no

tape

is

inserted,

METAL

is

displayed.

Scale

for

EXPAND

range

@

Connections

Connection

of

input

and

output

cords

e

The

cords

to

be

used

have

white

and

red

plugs.

e

Connect

white

plugs

to

the

left

channel

(L),

and

red

plugs

to

the

right

channel

(R),

making

sure

that

the

colors

match.

Take

particular

care

to

insert

the

plugs

all

the

way

in.

--

(Not

provided

in

the

European

model.)

—s

CONTROL

IN

jack

Connect

this

jack

to

the

CONTROL

OUT

jack

of

a

component

equipped

with

the

Pioneer

System

Remote

Control

(bearing

White

plug

the

RI

mark)

using

the

supplied

mini-plug

cord,

and

you

ON

will

be

able

to

operate

the

component

using

the

system

ae;

Right

channel

remote

control.

Red

plug

CONTROL

OUT

jack

Intermediary

output

of

remote

control

signals

from

the

above

input

jack.

Connect

it

to

the

CONTROL

IN

jack

of

another

component

compatible

with

the

Pioneer

System

Remote

Control.

Left

channel

Connection

to

an

audio

timer

For

details

on

the

connection

to

an

audio

timer,

refer

to

the

instruction

manual

of

the

audio

timer.

CT-91

Recording

connection

Playback

connection

Supplied

When

performing

unattended

cords

p

g

recording

or

wake-up

playback

Audio

timer

www

wewe

Mustration

not

applicable

to

U.K.

model.

Household

AC

outlet

were

eee

eee,

ete

wwons,

i

Stereo

amplifier

CT-91

3.

EXPLODED

VIEWS

AND

PARTS

LIST

NOTES

:

¢

Parts

without

part

number

cannot

be

supplied,

¢

The

A

mark

found

on

some

component

parts

indicates

the

impotance

of

the

safety

factor

of

the

part,

Therefore,

when

replacing,

be

sure

to

use

parts

of

identical

designation.

*

Parts

marked

by

“©”

are

not

always

kept

in

stock,

Their

delivery

time

may

be

longer

than

usual

or

they

may

be

unavailable,

3.1

EXTERIOR

Parts

List

of

Exterior

Mark

No.

Part

No,

>

&

PPP

OON®D

oO

&k

WAN=

CM-22C

PDG1015

REK-074

REK-—080

RTT1060

SLF-401C

DBK~

106

PNB1109

RBF1019

RBH1150

RBL—059

RBM-014

REB—223

REB1038

REB1057

REC1008

RNH

~

184

AAM1001

ABA1023

AMR1159

PAC1208

RAC—668

RAC1203

RAC1204

RAC1205

RAC1206

RAC1262

RAH1369

RAP1003

RMS1007

RMS1008

RNK1284

RNK1285

RNK1411

RNK1412

RXA1

158

RXA1160

RAH1197

RAH1198

RAH1368

RAH1371

RXX1064

RXX1128

RXX1129

RXX1130

____Description

Strain

relief

AC

power

cord

Fuse

(FUI03

1.6A//125V)

Fuse

(FU101,FU102

1A/125V)

Power

transformer

(T1)

Diode

(D11)

Mounting

plate

Absorber

B

Washer

Spring

Cassette

plate

spring

Nylon

rivet

(3.55.5)

Cover

cushion

(D)

Stabilizer

B

Rubber

spacer

(A)

Wood

spacer

Cord

clamper

Name

plate

Screw

Leg

assembly

Knob

(PHONES

LEVEL,

BIAS)

Knob

A

(TIMER)

Button

(POWER)

Button

(DOLBY,

MPX)

Button

(COUNTER)

Button

(CONTROL)

VR

knob

BCREC

BALANCE)

FL

filter

Under

escutcheon

Side

wood

(L)

Side

wood

(R)

Door

Button

holder

Side

mold

(L)

Side

mold

(R)

VR

knob

assembly

(A)

Button

assembly

(MONITOR)

Door

fens

FL

panel

Side

panel

Door

panel

Cassette

plate

assembly

Bonnet

Door

assembly

Front

panel

assembly

Mark

Exterior

A

Part

No.

Description

BBZ40PO80FCC

Screw

BBZ30PO60FCC

Screw

IBZ30PO80FCC

Screw

BBT30PO80FZK

Screw

BBZ40P160FCC

Screw

PYC30P100FMC

Screw

BBZ26PO80FZK

Screw

PMA30PO60FCU

Screw

BIAS

VR

unit

Headphone

unit

INPUT

VR

unit

Amp

unit

FL

unit

Switch

unit

OSC.HX

unit

Timer

unit

Control

unit

Power

supply

unit

Tape

mechanism

unit

Power

transformer

sheet

Tape

mechanism

sheet

VR

rod

Center

stay

VR

_

holder

Panel

stay

PS

holder

P.C.B

holder

Shield

plate

VR

rod

guide

Joint

P.C.B

stud

Cassette

plate

Front

panel

Ne

ee

Rear

panel

Motor

favel

Cay

he

a

x

4

La

Vf

Ny

‘

nee

YASS

AA)

D

3.2

Parts

Mark

List

of

Mechanism

Unit

No.

Part

No.

Description

Mark

1

RSF-031

Micro

switch

2

RSX-059

Rotary

encoder

3

RXM1016

Capstan

motor

assembly

4

RXM1018

Reel

motor

assembly

5

RBA-064

Step

screw

6

RBL-044

Thrust

spring

7

REB-—408

Rubber

cushion

8

RBL-028

Pinch

spring

9

RBL—030

Pinch

thrust

spring

10

RBL-098

Pinch

spring

(SUB)

11

REB1073

Capstan

belt

12

REB1074

Capstan

belt

(A)

13

RNL—-016

Tape

guide

14

RXA1235

Flywheel

assembly

15

RXA1236

Flywheel

assembly

(SUB)

16

RXA1238

Pinch

roller

(A)

assembly

17

RXA1240

Pinch

roller

(R)

assembly

18

RXB-362

Metal

holder

assembly

(A)

19

RXB-466

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21

RBL-—032

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22

RBL-033

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pressure

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23

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24

RXB-751

BT

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25

RXB-874

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26

RXB-875

Take—up

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27

RBL-—037

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28

RBL~038

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29

REB-502

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belt

30

REB-511

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shoe

31

RNL-723

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32

RNL-729

Cam

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33

RXB~-884

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cam

gear

assembly

34

RBH1136

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shock—absord

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35

RBH1137

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return

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36

RBH1138

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return

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RBH1142

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return

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38

RBL-—027

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39

RBL-—039

Eject

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40

RBL-040

Half

pressure

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41

RBL—041

Rec

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spring

42

RBL-042

Detect

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spring

43

RBL-—043

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lever

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44

REB-—447

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RNH-184

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RNL-733

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RNL-—735

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RNL-739

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RNL-740

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RNL-741

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RNL-742

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54

RNL-849

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55

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109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

Part

No.

Description

BBZ26PO80FZK

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BBZ30PO80FZK

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BMZ23P100FZK

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BMZ26PO030FZK

Screw

BMZ30PO80FZK

Screw

JGZ20PO025FMC

Screw

PMA26PO50FZK

Screw

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Screw

PMZ20PO80FZK

Screw

RBF

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Oil

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RBF

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RBF-—070

Thrust

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RBF—-076

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RBF-077

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VCZ26PO80FMC

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WA26N070W040

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WA32D080D050

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YE20FUC

E

ring

YE25FUC

E

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YE30FUC

E

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YS24FBT

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RXX1055

Power

motor

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RXX1158

Head

base

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Earth

lead

wire

assembly

R/P

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Erase

head

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unit

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Reel

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Pressure

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No,

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

Part

No.

Description

Cassette

clamp

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Plate

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clamper

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Cassette

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Side

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Top

frame

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Ibn

Joe

pom

pou

poe

go

mi

On

°

vee

3X

marked

capacitors

and

resistors

have

parts

numbers.

HAHAHAHA

oft

wan

Ue

nommat

ETA

aba

SAR

Geel

Wis

Mn

oth

S3

This

is

the

basic

schematic

diagram.

but

the

actual

circuit

may

vary

due

to

7

C4

$2,

$3

RSH-070

—ee

a

cS

a

ee

oe

ace

-

—

improvements

in

design.

UD

N

00

Ce)

10

11

1

2

3

4

D

6

7

P.C.

BOARDS

CONNECTION

DIAGRAM

ie

oie

AMP

UNIT

nae

foo)

ae

Js

a

ms

FL_UNIT

MECHA

UNIT

(1/3)

ee

"

ug

oe

man

‘

H

s

m .

:

a

[ F

Ff

84

pas

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REC

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ERASE

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pretrecyrs

a

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: 4

F

¢ :

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aed

&

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] 1

c

QS

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HCIO6

=

ICAO

s2-2

ver

[us

5)

ialcteads

@-

VRIOS

4C107

OSC.

HX

UNIT

O61

602

603

601

617

Q607

VRIO6

0610

Cos

608

Q609

Q605

9604

VR601

vR602

INPUT

VR

UNIT

Q4tt

C17

Q112

1118

REC

LEVEL,

MECHA

UNIT

(2/3)

fe

REC

BALANCE

SW

UNIT

BIAS

VR

UNIT

7

8

9

10

11

12

FL

UNIT

POWER

SUPPLY

UNIT

FL

DISPLAY

4

3}

<l

‘Ral

ao

An

al

§ 2

&

i

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Se

OS

TRANSFORMER

Hes

9

4

|

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AC

POWER

CORD

|

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oro

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Acr2ov

|

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suse

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sco

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702)

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Q710

IC704

79

9709

Q706Q743,

07089715,

Q7070712

0711

07050714

CONNECTOR

UNIT

0806

Iceo2

9808

ICBO3

Ic804

MECHA

UNIT

(3/3)

eee

ean

ee

0803

TIMER

UNIT

ROTARY

ENCODER

ir

cea

GT

Dti

HALF

IND

HEADPHONE

UNIT

NIT

TAPE

CDUNTER

|

I

|

f

"

|

sor!

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sal

*

:

ae

[]

Proves

Lever

D

REC

SW

UNIT

Ke

c2

TAPE

SELECTOR

UNIT

SENSOR

UNIT

(A)

SENSOR

UNIT(B)

CT-91

7.

ELECTRICAL

PARTS

LIST

NOTES

:

*

Parts

without

part

number

cannot

be

supplied,

*

Parts

marked

by

“©”

are

not

always

kept

in

stock,

Their

delivery

time

may

be

longer

than

usual

or

they

may

be

unavailable,

*

The

A\

mark

found

on

some

component

parts

indicates

the

impotance

of

the

safety

factor

of

the

part.

Therefore,

when

replacing,

be

sure

to

use

parts

of

identical

designation,

«

When

ordering

resistors,

first

convert

resistance

values

into

code

form

as

shown

in

the

following

examples,

Ex,.]

When

there

are

2

effective

digits

(any

digit

apart

from

0),

such

as

560

ohm

and

47k

ohm

(tolerance

is

shown

by

J=5%,

and

K=10%),

560Q2

.

56x10!

BG]

crcevcccscccsccvescessessesesseescsceerenseee

47k

Q

47X

108

AD

cee

alad

cose

deeik

wane

eh

canceadatevetebenante

0.52

OR

Bet

tsawstscrtiaccewsined

seu

ra

ew

edeacisesaedaeaaranmeis

1Q

OF]

Ostteetesiect

scieciwsveantengese

eon

veveacuocpacrnsaderceasta

acne

"Ex.2

When

there

are

3

effective

digits

(such

as

in

high

precision

metal

film

resistors),

5.62k

Q

562

x

10!

5621

Poor

e

ee

ereeerererscceereceeseeeseseeeesseees

Miscellaneous

Parts

P.

C.

BOARD

Parts

Mark

Symbol

_&

Description

Part

No.

FL

unit

Switch

unit

OSC.HX

unit

Timer

unit

Control

unit

Power

supply

unit

BIAS

VR

unit

Headphone

unit

INPUT

VR

unit

Amp

unit

REC

switch

unit

TAPE

SELECTOR

unit

CONNECTOR

unit

SENSOR

unit

(A)

SENSOR

unit

(B)

OTHERS

Mark

Symbol

&

Description

Part

No.

A

CM

—22C

Strain

relief

A

PDG1015

AC

power

cord

A

REK

—074

Fuse

(1.6A)

A

REK

—080

Fuse

(1A)

A

RTT

1060

Power

transeformer

SLF

—401C

Diode

RSF

-031

Microswitch

RSX

—059

Rotary

encorder

RXM1016

Capstan

motor

;

assembly

RXM1018

Rell

motor

assembly

RXX

1055

Power

motor

assembly

RXX1158

HEAD

BASE

assembly

be

eveeeeeeeeeeeecteeneeseners

RD1/4PS

[5]

[6){1]

J

sa

benaenecseeretsesesascesees

RD1/4PS

[4]

[7][3]

J

deena

eeeeeeeseneoeeasensceres

RN2H

(0)

R][5]

K

sete

ceeeeessecesesecscnsoeees

RSIP

[o][i}[o]K

vig

deidaie

see

etudstleeedenweceee

RN1/4SR

(5)(6)[2|

0)

F

FL

Unit

SEMICONDUCTORS

Mark

Symbol

&

Description

Part

No.

IC901

—IC903

LC7570

D901

188254

OTHER

Mark

Symbol

&

Description

Part

No.

FLUORESCENT

TUBE

RAW1018

Switch

Unit

SWITCHES

Mark

Symbol

&

Description

Part

No.

$1001-—1014

Tact

switch

RSG

—

155

(i,

«,

@,

4,

>,

I,

TAPE

RETURN,

»,

COUNTER

RRESET,

COUNTERMODE,

TAPE

CAPACITY,

METER

RANGE,

MONITOR,

©)

RESISTORS

Mark

Symbol

&

Description

Part

No.

All

resistors

RD%PMOODN

OSC.HX

Unit

SEMICONDUCTORS

Mark

Symbol

&

Description

Part

No.

IC601

u

PC1297CA

Q601

—-Q603

DTC114ES

Q605,

Q606

2SA1309A

Q608-—Q610

2803243

Q604,

Q607,

0613

2SC3311A

Q611

2SD1276

D601

—-

D603

MTZ11B

D611

RD2.7EB

D608

RD3.0FB1

D604

—D607,

D609,

D610

188254

COILS

Mark

Symbol

&

Description

L603,

L604

Step—up

coil

L605

OSC

coil

L606,

L607

Line

coil

L601,

L602

Trap

coil

CAPACITORS

Mark

Symbol

&

Description

C618

C609,

C610

C622

C620,

C621

C601,

C602, C619,

C623—C625

C617

C607,

C608,

C626

C627,

C628

C629

C605,

C606

C615,

C616

C613,

C614

C611,

C612

C603,

C604

C630

RESISTORS

Mark

Symbol

&

Description

VR601,

VR602,

VR604,

VR605

Semi-—fixed

resistor

(10k)

VR603

R627

R619

Semi-—fixed

resistor

(2.2k)

R603,

R620

Other

resistors

OTHER

Mark

Symbol

&

Description

CN23

Timer

Unit

SWITCH

Mark

Symbol

&

Description

$1101

Slide

switch

(TIMER

REC-—OFF—PLAY)

Part

No.

RTD1011

RTD1014

RTF1053

RTF1076

Part

No.

CCCCH120J50

CCCSL470K500

CEAS100M50

CEAS221M16

CEAS330M35

CEAS4R7M50

CFTXA223J50

CFTXA332J50

CFTXA682J50

CGCYX103K25

CGCYX473K25

CKCYB391J500

CKCYF4732Z50

CKPUYB821K50

COPA822J100

Part

No.

VRTG6HS103

VRTG6HS222

RS1LMFO10J

RD%PMF6R8J

RD“%PMODIOJ

RD’%PMODOJ

Part

No.

W-D2509

Part

No.

RSH1001

Control

Unit

SEMICONDUCTORS

Mark

Symbol

&

Description

1C804

IC802

IC801

C803

Q807

Q803

-Q806

Q801,

Q802

Q808

D801

—D805

CAPACITORS

Mark

Symbol

&

Description

C808

C806,

C807

C805

C803,

C804,

C809,

C810

C801

RESISTORS

Mark

Symbol

&

Description

R826

Resistor

array

(10kx8)

R844,

R847

Resistor

array

(10kx4)

R833

Resistor

array

(22k

x

4)

R827

Resistor

array

(10kx

7)

R836,

R837,

R846

R806

—

R820

Other

resistors

OTHERS

Mark

Symbol

&

Description

CN21

X801

CERAMIC

RESONATOR

Power

Supply

Unit

SEMICONDUCTORS

Mark

Symbol

&

Description

1C701,

IC702

aN

Q702

Q706,

Q707,

Q713,

Q715

Q708

Q705, 0709,

Q711,

A712,

Q714

Q701,

0703,

A704,

Q710

D723

D717

D716

D718,

D71¢

D724

D713

D709

D711

D714,

D715,

D720,

D721

SPEPBEPRB

BPBEBBE

D705,

D706,

D722

D701—D704

>

Part

No.

BA335

M5233L

PD4148B

u

PD4050BC

DTC143ES

2SA1309A

28C3311A

2$D1302

188254

Part

No.

CEASR47M50

CGCYX104K25

CGCYX473K25

CKCYF103Z50

CKCYF473Z50

Part

No.

DCN1009

RCX1008

RCX1009

RCX1010

RD%PMODIO

RN/“POOIDOLF

RD

%OOO

J

Part

No.

W-D2510

VSS1014

Part

No.

BA6109

2SA1283

2S8A1309A

2SA936

28C3311A

2SD1276

MTZ10C

MTZ12B

MTZ13B

MTZ6.2B

MTZ6.8C

RD2.7EB1

1B2C1—LC2

1B2Z1-—LC2

1SR35—-100A

188254

10DF2FA9

SWITCH

Mark

Symbol

&

AN

S701

Power

s

COIL

Mark

Symbol

8

L701

Line

coi

CAPACITORS

Mark

Symbol

8

C724

C722

C717,

C719

C714-C716

C710

C709

C711,

C712,

C

C713

C730

C723,

C728

C703—C708,

C€

C720

(6800

u

C701,

C702

(Z

aN

C733

(0.01

uF

RESISTORS

Mark

Symbol

&

R708

R702,

R703,

R

R701,

R709,

R

R732-—R736

Other

resistor

OTHER

Mark

Symbol

&

CN21

BIAS

VR

Unit

RESISTOR

Mark

Symbol

_

&

VR1201

Variab

(5k-E

Headphone

Unit

SEMICONDUCTOR

Mark

Symbol

&

1C401

2art_

No.

35

233L

148B

D4050BC

‘143ES

1309A

3311A

1302

254

?art_

No.

SR47M50

YX104K25

'YX473K25

"YF

103Z50

'YF473Z50

Part

No.

11009

1008

‘1009

1010

4PMOD0J

POOOOLF

40100

J

Part

No.

D2510

1014

Part

No.

3109

11283

\11309A

\936

3311A

11276

210C

212B

213B

26.2B

26.8C

2.7EB1

'C1-LC2

'Z1-LC2

135-—

100A

1254

\F2FAQ

SWITCH

Mark

Symbol

&

Description

AN

$701

Power

switch

COIL

Mark

Symbol

&

Description

L701

Line

coil

CAPACITORS

Mark

Symbol

&

Description

C724

C722

C717,

C719

C714-C716

C710

c709

C711,

C712,

C721,

C731

C713

C730

C723,

C728

C703-—C708,

C729,

C732,

C734

C720

(6800

u

F/25V)

C701,

C702

(2200

u

F/50V)

A

C733

(0.01

u

F/250V)

RESISTORS

Mark

Symbol

&

Description

R708

R702, R703,

R717,

R729

R701, R709,

R712—R714,

R732—R736

Other

resistor

OTHER

Mark

Symbol

&

Description

CN21

BIAS

VR

Unit

RESISTOR

Mark

Symbol

&

Description

VR1201

Variable

resistor

(Sk—B)

(BIAS)

Headphone

Unit

SEMICONDUCTOR

Mark

Symbol

&

Description

1C401

Part

No.

RSA-063

Part

No.

RTF1075

Part

No.

CEANP4R7M50

CEASR22M50

CEAS101M10

CEAS101M25

CEAS102M25

CEAS222M25

CEAS330M35

CEAS332M25

CEAS4R7M50

CKCYF

103250

CKCYF473Z50

RCH1010

RCH1021

VCG

—044

Part

No.

RS1LMFO10J

RD%PMFLIOILU

RD%PMOOOJ

RD%PMOIOO

Part

No.

W-P9810

Part

No.

RCV1007

Part

No.

M5218L

CAPACITORS

Mark

Symbol

&

Description

C401,

C402

C403,

C404

C405

RESISTORS

Mark

Symbol

&

Description

Part

No.

CEYANPO10M59

CEZA101M16

CGCYX473K25

Part

No,

VR401

Variable

resistor

(10k—B)

RCV1009

(PHONES

LEVEL)

Other

resistors

RDY%PMOOOOe

OTHER

Mark

Symbol

&

Description

Part

No.

JA401

RKN1002

INPUT

VR

Unit

RESISTORS

Mark

Symbol

_&

Description

Part

No.

VR501

Variable

resistor

RCV1005

(20k—B)

(REC

LEVEL)

VR502

Variable

resistor

RCV1008

(100k—-MN)

(REC

BALANCE)

OTHER

Mark

Symbol

&

Description

Part

No.

CN25

W-D2508

Amp

Unit

SEMICONDUCTORS

Mark

Symbol

&

Description

Part

No.

IC302

BA6138

1C103,

IC111

CX20188

IC105,

IC106

M5201L

IC107,

IC109,

IC113,

1C115,

M5218P

1C116,

IC301

IC101,

IC102

M5220L

A

IC117

NJM78MOSFA

A

1C118

NJM79MO9SFA

Q302

2SA1309A

Q127

2SA970

A

Q130

2SB950

Q128

2802240

Q103-Q106,

Q109-0118,

28C3311A

Q301

A

Q129

2SD1276

Q107, Q108,

Q119,

A120

2SD1302

Q125,

Q126

2SK246

Q101,

Q102

2SK389

A

D103,

D104

HZ2CLL

A

D101,

D102

HZ5CLL

D305

MTZ7.5B

D301

—

D304

1SS254

SWITCHES

Mark

Symbol

&

Description

$301-—$303

Push

switch

(MPX

FILTER,

DOLBY

B/C,

DOLBY

ON-OFF)

RY301

Relay

CAPACITORS

Mark

Symbol

&

Description

C133,

C134,

C139, C140,

C177,

C178,

C185,

C186,

C317

C155,

C156

C311,

C312

C305,

C310

C235, C236,

C307

C309

C315,

C316

C149,

C150,

C231,

C232

C105,

C106,

C117—C120,

C147,

C148,

C161—C164,

C191,

C192,

C223-C228

C151-—C154,

C215-C218,

C301,

C303

C209,

C210

C145,

C146,

C189,

C190,

C195,

C196,

C201,

C202

C107,

C108,

C207,

C208

C131,

C132,

C175,

C176

C129, C130,

C173,

C174

C111,

C112

€121-C124,

C165—C168,

C239,

C240

C135,

C136,

C179,

C180

C221,

C222

C233,

C234

C125, C126,

C159,

C160,

C169,

C170,

C193,

C194

C113,

C114

C127,

C128,

C171,

C172

C143,

C144,

C187,

C188,

C199,

C200,

C205,

C206

C103, C104,

C141,

C142,

C183,

C184

C137,

C138,

C181,

C182

C203,

C204

C219,

C220,

C229,

C230,

C237

C238,

C313,

C314

C211,

C212,

C302

C157,

C158

C115,

C116

C241,

C242

C101,

C102

C109,

C110

Part

No.

RSG1017

RSR-039

Part

No.

CEANP0O10M50

CEAS2R2M50

CEAS221M25

CEAS330M35

CEAS4R7M50

CEAS470M25

CEAS471M16

CEYANPO10M50

CEYANP4R7M50

CEZA101M16

CEZA221M25

CFTXA103J50

CFTXA152J50

CFTXA153J50

CFTXA154J50

CFTXA182J50

CFTXA222J50

CFTXA224J50

CFTXA332J50

CFTXA334J50

CFTXA392J50

CFTXA473J50

CFTXA474J50

CFTXA562JN50

CFTXA563J50

CFTXA683J50

CFTXA822J50

CGCYX473K25

CKCYF103Z50

CKPUYB121K50

CKPUYB151K50

CKPUYB821K50

CQSF151J50

CQSF301JU50

COIL

.

FILTER

Mark

Symbol

&

Description

Part

No.

L101—L106

Coil

(5.6mH)

RTF1022

F101,

F102

MPxX

filter

RTF1066

RESISTORS

Mark

Symbol

&

Description

Part_No.

VR105—VR108

VRTB6VS223

Semi-—fixed

resistor

(22k)

VR103,

VR104

VRTB6VS333

Semi-—fixed

resistor

(33k)

VR101,

VR102

VRTS6VS222

Semi-—fixed

resistor

(2.2k)

VR109,

VR110

VRTS6VS472

Semi-—fixed

resistor

(4.7k)

R115—R120

RDF%PUDODU

R103,

R104,

R107—R112,

R273,

ROR%PMODIOJ

R274, R279,

R280,

R283,

R284

R133—R138,

R157,

R158,

RDY%PMOOOJ

R163-—R166,

R171,

R172,

R193,

R217, R218,

R235—R238,

R267

—R272,

R275—R278,

R310,

R315—R317

Other

resistors

RD%PMOOO

OTHERS

Mark

Symbol

&

Description

Part

No.

JA101,

JA103

1P

Pinjack

RKB1010

(W)

(bch,

LINE

IN/OUT)

JA102,

JA104

1P

Pinjack

RKB1011

(L)

(Reh,

LINE

IN/OUT)

JA301,

JA302

RKN1004

(REMOTE

CONTROL

JACK)

CN25

Connector

W-P9808

CN23

Cennector

W-

P9809

REC

switch

unit

SWITCH

_Mark

_

Symbol

&

Description

__Part

No.

$1

Tact

switch

RSG

—

143

TAPE

SELECTOR

unit

SWITCH

_Mark_

Symbol

&

Description

__Part

No.

_

S2,

$3

Slide

switch

RSH

—070

CONNECTOR

unit

CAPACITORS

Mark

Symbol

&

Description

Part

No.

C1

CKCYF473Z50

RESISTORS

_Mark

—

Symbol

&

Description

Part

No.

Ri

RDY%PM681J

SENSOR

unit

(A)

SEMICONDUCTORS

_Mark_

Symbol

&

Description

Part

No.

DI

GP1A51HR

CAPACITORS

|

_Mark

_

Symbol

&

Description

Part

No.

C2

CKPUYY103N16

RESISTORS

_Mark_

Symbol

&

Description

Part

No.

R2

RD

%

PM271J

SENSOR

unit

(B)

SEMICONDUCTORS

_Mark

|

Symbol

&

Description

Part

No.

D2

GP1A51HR

CAPACITORS

_Mark

_

Symbol

_

&

Description

Part

No.

C3

CKPUYY103N16

RESISTORS

_Mark

_

Symbol

&

Description

Part

No.

R3

RD

%

PM271J

ia.

8.

ADJUSTMENTS

8.1.

MECHANISM

1.

Tape

running

and

azimuth

adjustment

Adjustment

Location

Specifications

Insert

half

mirror

in

side

A

(set

screws

at

front).

adjustment

hole

(Refer

to

Fig.

3.)

Height

adjust-

|

Playback

the

above

tape

and

adjust

so

that

ment

nut

(Refer

to

Fig.

1.)

there

ts

no

curling

of

the

tape

in

the

guide

section

of

the

head.

(Refer

to

Fig.

2.)

Playback

test

tape

STD-331B

and

adjust

so

that

the

10

kHz

output

level

is

maximum

and

there

is

no

phase

difference

Azimuth

adjust-

ment

screw

(Refer

to

Fig.

1.)

also

so

that

between

L-ch

and

R-ch.

Check

Item

2

above

again

and

adjust

again

if

it

dnes

not

satisty

the

specifications.

(Be

sure

to

adjust

Item

3

when

Item

2

is

adjusted.)

Azimuth

adjustment

screw

Height

adjustment

nut

Adjustment

Location

Capstan

motor

2.

Tape

Speed

Adjustment

Specifications

Adjust

so

that

the

playback

frequency

(s

3015+5

Hz

at

the

beginning

of

winding

of

test

tape

STD-301.

Playback

test

tape

STD-301

again

and

confirm

that

the

above

specifications

are

satisfied.

Capstan

motor

Sloted

screwdriver

3.

Adjustment

of

Air

Damper

Adjustment

Location

Cylinder

adyjust-

ment

screw

(Refer

Curling

to

Fig.

4.)

Tape

PLAY

running

Opening

becomes

slower

(when

bounding)

Specifications

Make

sure

that

the

door

opens

smoothly,

there

is

no

two-stage

motion,

and

that

there

is

no

bounding

when

1

opens

completely.

(Perform

with

no

cassette

half

inserted.)

Opening

becomes

faster

(when

two-stage

motion)

Adjustment

screw

Reference

value-

A=5+1

mm

9.

SAFETY

INFORMATION

1.

SAFETY

PRECAUTIONS

The

following

check

should

be

performed

for

the

continued

protection

of

the

customer

and

service

tech-

nician,.

LEAKAGE

CURRENT

CHECK

Measure

leakage

current

to

a

known

earth

ground

(water

pipe,

conduit,

etc.)

by

connecting

a

leakage

current

tester

such

as

Simpson

Model

229-2

or

equivaient

between

the

earth

ground

and

all

exposed

metal

parts

of

the

appli-

ance

(input/output

terminals,

screwheads,

metal

overlays,

control

shaft,

etc.).

Plug

the

AC

line

cord

of

the

appliance

directly

into

a

120V

AC

60Hz

outlet

and

turn

the

AC

power

switch

on.

Any

current

measured

must

not

exceed

0.5mA.

|

Leakage

current

tester

Reading

should

not

be

above

0.5mA

Test

all

exposed

metal

surfaces

Se

2-wire

cord

O

Also

test

with

)

plug

reversed

Earth

(Using

AC

adapter

ground

plug

as

required)

AC

Leakage

Test

ANY

MEASUREMENTS

NOT

WITHIN

THE

LiMITS

OUTLINED

ASOVE

ARE

INDICATIVE

OF

A

PO-

TENTIAL

SHOCK

HAZARD

AND

MUST

BE

COR-

RECTED

BEFORE

RETURNING

THE

APPLIANCE

TO

THE

CUSTOMER.

2.PRODUCT

SAFETY

NOTICE

Many

electrical

and

mechanical

parts

in

the

appliance

have

special

safety

These

are

often

not

evident

from

visual

inspection

nor

the

protection

afforded

by

them

necessarily

can

be

obtained

by

using

replacement

components

rated

for

voltage,

wattage,

etc.

Replacement

parts

which

have

these

special

safety

charac-

teristics

are

identified

in

this

Service

Manual.

Electrical

components

having

such

features

are

identified

by

marking

with

aA

on

the

schematics

and

on

the

parts

list

in

this

Service

Manual.

The

use

of

a

substitute

replacement

component

which

dose

not

have

the

same

safety

characteristics

as

the

PIONEER

recommended

replacement

one,

shown

in

the

parts

list

in

this

Service

Manual,

may

create

shock,

fire,

or

other

hazards.

Product

Safety

is

continuously

under

review

and

new

instructions

are

issued

from

time

to

time.

For

the

latest

information,

always

consult

the

current

PIONEER

Service

Manual.

A

subscription

to,

or

additional

copies

of,

PIONEER

Service

Manual

may

be

obtained

at

a

nominal

charge

from

PIONEER.

RECORDING

SECTION

1.

ae

|

Bias

Oscillator

Adjustment

[No.|

Mode

|

Input

signal

&

test

tape

Adjustment

location

Load

the

STD-610

test

tape

with

no

input

signal.

2.

Erase

Current

Adjustment

Load

the

STD-610

test

tape

with

no

input

signal.

3-1.

Overbias

Adjustment

Mode

Adjustment

value

Remarks

106

kHz+

300

Hz

Measuring

location

L605

Adjustment

location

Measuring

location

VR605

Adjustment

vaiue

Remarks

input

signal

&

test

tape

Apply

a

6.3

kHz/—

10

dBv

(-—

10VU

meter

reading)

signal

to

the

Line

input

terminals

and

insert

STD-630.

Record

and

play

back

the

6.3

kHz

signal

at

-

10

dBv

input

level.

Record

the

6.3

kHz/

-

10

dBv

signal

on

STD-620

and

play

back.

Record

the

6.3kHz/

—

10

dBv

signal

on

STD-610

and

play

back.

Measuring

location

Adjustment

value

Remarks

LINE

OUT

L,

R

terminals

Adjustment

location

3.0

dB

overbias

Turn

control

clockwise

past

the

peak

to

assure

proper

overbias

value.

VR6O2

(R)

2.5

dB

overbias

1.0

dB

overbias

|

5.

|

Turn

control

clockwise

past

the

peak

to

assure

proper

overbias

value.

3-2.

Frequency

R

esponse

Adjustment

|

No.

|

Mode

Input

signal

&

test

tape

Adjustment

location

Adjustment

value

Remarks

Apply

a

10

kHz/315

Hz/

—

20

dBv

signa!

to

the

Line

input

terminals

and

insert

STD-630.

Record

and

play

back

the

315

Hz

signal

and

a

10

kHz

signal

at

-

20

dBv

input

level.

LINE

OUT

L,

R

terminals

VR601

{L)

VR602

(R)

Record

and

play

back

repeatedly,

comparing

the

315

Hz

and

10

kHz

playback

levels,

and

adjust

to

+

1.5+0.5

dB.

Record

the

10

kHz/

315

Hz,

-

20

dBv

signal

on

STD-620

and

play

back.

Record

the

10

kHz/

315

Hz,

—

20

dBv

signal

on

STD-610

and

play

back.

VR603

(L/R)

+0.5+

1.0

dB

VR604

(L/R)

+0.5+

1.0

dB

Check

distortion

value

after

adjustment

is

completed

and

confirm

that

there

is

no

underbias.

4.

Recording

Level

Adjustment

location

Measuring

location

Adjustment

value

Remarks

TP.

1

(Leh)

TP.

2

(Reh)

-

15.2

dBv

Input

signal

&

test

tape

signal

to

the

line

Input

Set the

DOLBY

NR

switch

to

the

ON

position.

(DOLBY

B)

Set the

TAPE

SELECTOR

switch

to

the

NORM

position.

Apply

a

315

Hz/O

dBv

Rec

Level

control

volume

terminals,

load

the

STD-630

test

tape.

Record

the

above

signal

VR107

(Leh)

VR108

(Loh)

onto

the

STD-630

test

tape,

and

playback.

TP.

3

(Leh)

TP.

4

(Rch)

Repeatedly

record,

playback

and

adjust

so

that

the

playback

signal

level

becomes

—

14.6

dB.

Set

the

TAPE

SELECTOR

switch

to

the

CrOz

position.

tape,

and

playback

Record

the

above

signal

Check

onto

the

STD-620

test

TP.

3

(Lch)

TP.

4

(Reh)

—~14.6

dBv

+0.9

14.6

dBv

n

04

dB

Le.

Set

the

TAPE

SELECTOR

switch

to

the

METAL

position.

Record

the

above

signal

onto

the

STD-610

test

tape,

and

playback.

Level

Meter

Adjustment

5.

[No.

|

Mode

|

Input

signal

&

test

tape

Adjustment

location

TP.

3

(ich)

TP.

4

(Reh)

Measuring

location

-

14.6

dBv

*9:9

ap

Adjustment

value

Remarks

VR105

(Leh)

VR106

(Reh)

1.

|

REC

Apply

a

315

Hz/—

10

dBv

PAUSE

(316

mV)

signal

to

the

Line

Input

terminals.

6.

DC

Balance

Adjustment

No.

VR109

(ich)

VR110

(Rch)

TP.

1

(ich)

TP.

2

(Reh)

TP17

(Lch)

OV+0.2V

TP18

(Reh)

Check

that

the

level

meters

“O

dB”

light

up

within

—

15.2

dBv

+

1.0

dB

of

the

signal

output

level.

Input

signal

&

test

tape

Adjustment

location

Adjustment

value

Pioneer CT-91 User manual

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