Pioneer ct 91 a service manual

Page 1

(y) PIONEER

The future oI sound and vision.

CT- 913 HAS TWO VERSIONS:

Type K ' Power roquirement .' _ Expon destination
HEM Aczzov, 240v (switchobIe)* , O L' . European continent ,,
so AcIIov. IZOV- 127v 220v. 240v (mm; Kingdom of Saudi Arabia, and general Nfarket

*Change tho primary wiring of Ihe power transformer.

0 This manual is applicable'to the GT-S13IHEM and SD types.
\ , .
- Fear the SD type, refer to pages 47.
0 Ce manuel pour la service oomprend les explicatiohs en frangais de régfage.
' Este manual de servicio trata deljmétodo ajuste escrito en espaflol.

CONTENTS "

SPECIFICATIONS ------ ,-
'_ PANEL FACILITIES
EXPLODED VIEWS AND PARTS LIST
PACKNG .........................
SCHEMATIC DIAGRAM
P..C BOARDS CONNECTION DIAGRAM
ELECTRICAL PARTS LIST--
ADJUSTMENTS
REGLAGE-
AJuslfs-u
FOR SD'TYPEv

fiwwpfiPQPWPr

PIONEER ELECTRONIC CORPORATION 4-1 MeguIO1-Cnome Meguro-ku Tokyo 153. Japan

PIONEER ELECTRONICS SERVICE INC. P..O Box 1760 Long Beach, calonmia 90601 US A.

PIONEER ELECTRONICS OF CANADA. INC. 505 Cochrane Drive Markham Ontario L3R 8E3 Canada

PIONEER ELECIRONIC [EUROPE] N.V. Keetberglaan, 1, 2740 Beveren. Belgium

PIONEER ELECTROMCSAUSTRAIJAAPTY.LTD. 178-184 Boundary Road. Braeside Victoria 3195. Austraiia TEL: [031580- 9911

o PIONEER ELECTRONIC CORPORATION 1989 __ , 1 SA m 1989 mm m m,"

Page 2

T-91 a

1. SPECIFICATIONS

Systems
Heady -

. ~ 4 track. 2-channels1erea
Recording and playback heard
Laser amorphous playback head!

Hard permalloy recordtng head combinahon x l
Erasing heau:(Ferrite head) x l
Dc servo capstan motor x I
DO reel motor x t

DC euxil'nry motor x t
.................. ogmwfius)
: n.052%(DIN)

------- Approximately 80 seconds
(cm lapel

Mame .............

Wow 5. flutter ----------

Fast winding time ---------

Frequenry response (-zu on recording)

Metal tape -~ « rs Hz to 23.000 Hz
Chrome tape - r5 H1 to ztmu Hz
Normal tape . 15 Hzlo at out) it;

Slgnal-la-noise ratio
DOLBY NR OFF -------------------- More titan so as

Noise reduction attest
DDLBY anype NR 0N More than to dB (at 5 kHz)
00st C-lype NR OH More than t: as (at 5 kHz)

Harmonic rtetpnlon No more than twat. [o as)

input ~ -- rrrrrrrrr LINE: 57 mV

(input impedance: 50 k n 1
0mm ........................... UNE. ,1, my
(Output impedance: t. 4 k n)
Headphonw 0.5 mW
(Lpad impedance 3 :2 wt Max.)
2

Subtunctlons

lama counter digit olemnic counter)

Auto Tape Loose Cenoetler lunotien

Meter Range selection (wiaeiexpanaea range)

Auto Monitor Function (TAPE/SOURCE auto selection)
Power Eject (OPEN/CLOSE)

Music Searctt (ever z is seteuionst

Tape Rewmlfiewm Play

Headphones jack (watt volume control)

ales mnlml

Ree cefibratton level control

MPX Fitter

Altlo space Repording Mute

Auto Tape Selector

Playback/Rewarding timer start tunetion

Dolby a-rype ena C-Iype Noise Reeuouen Systems
Dolby HX Pro system

FL Level Meter Peak-hold lunctipn (rs r t segments)

o.........oer....

Miscellaneous
Power requirements
0. 5.. Ctnadtan models
u. .miltlaly otherdeslillation modes-
~Ac INN/120 - IZ7V/220V/20V (switottaue). some Hz

'AC IZOVMJ HZ

Powereonsumption
u. Canadian models 25w
u. militaty. otherdestinatlon models- zaw
Dlmenslons - -451(wt x 133 504) x mm) mm

Weight (wiumul package) » roe kg

ACCESSOIIOS
Opemlnn instructions --
Cunnecfing cords -~ >~

NOYE.
Specifications Ind design tubind lo posslhk modification: maul
notice. due to improvements.

2. PANEL FACILITIES

f/Q/Q/i/Q/W}

...... e..." .. C141»!

l

33:1/ 3:33333333%

6) POWER swltch

Turns the power on and oil.

Atter the power ls turned on. the dotted lines in lbs law meter
flash tor approximatety a second: unlil lite 01mins ol the unit have
stabilixett. The unit will not operate during in: mm.

® Cassette door OPEN/CLOSE button

NOTE:

tr Ute cassetle door is closed wtuir the unit I: turned art. and tire
power ix than tamed on. lira assure dour may open and am
urer pressing one oi the operation buttons. Tnir ooorrre won the
microprocessor meta in. door mochnnlsm to its irritiai state and
do not indicate any malfuncttanlng ortlta unit.

G> COUNTER selectors

RESET:

Resets [he counts! Micah" to '0000'.

MODE:

Each time this bulb" is mud. one 0! me [plowing three mode:

is 561 in guano. "

. Normal tepe count-r

- Tune mum (disphys ttra elapsed playpaekor ramming time)

. Remaining limo counter (displays M remaining time at lite
laps).

@ TAPE capacrrv selector
To imitate the W time value in tire remaining rime counter
mode, this selector must be set in ammencewittt the tape used.

': coo->eaol-v Canaan:

iii TAPE RETURN button

This bummisused intttetepeccurnarmooetatasttemeraor
rewind on tape la a point marine counter reading 'oooo'.

© DOLBY NR salmr:

ON/OFF:

um to turn me noitry NR Systams circuits on or OFF.

BIC:

war. rt- nit/0F: switch in the ON position. Dolby B-typ. MB or
C-typoNR can bee-looted w'fltmlaswiwh.

Q MPX FILTER "(Itch

Set this swim to ON wtren recording FM broadcast: with one or
the paltry NR systems.

@ REC LEVEL control

9 REC BALANCE control

a TIMER mode selector

REC:

Set lo his position tor limovrwnding.

PLAY:

selto this position rortlrner phybwk

OFF:

wttentrtetimerienotte lieu-ethlfltosdmermifion.
(Normally leave tire selector in this pcsilion.)

® PHONES LEVEL moi
um tor-pirating ttta volume when listening rim. noodphonas.

® PHONES not:
For uprtnacihrt oi standard name Madphom