Pioneer H-2000, H-2001 Service Manual
SERVICE
MANUAL
8
TRACK
HOME
STEREO SYSTEM
WITH
AM IFM.STEREO
Hr?(]OO
o2KU,Kc
8
TRACK
HOME
STEREO
SYSTEM
WITH
AM/FM.STEREO
AND
AUTOMATIC RECORD
CHANGER
HI?oO1
KU
()rrloNeeltR'
CONTENTS
1. SPECIF|CAT|ONS
2
2. PARTS
LOCATION
2.'l H-2000
3
2.2 H-2001
4
3. CIRCUITDESCR|PT|ON....
5-6
4. DISASSEMBLY..
7
5. ADJUSTMENT
5.1 FM
lF Adjustment . .
5.2 FM
Tracking
Adjustment
5.3 MPX
Separation Adjustment . . . .
5.4 AM Tracking
Adjustment
5.5 Tape
Mechanism
Adjustment . . .
12-
DIAL
STRINGING
CI RCUIT
DIAGRAM
SECTION
7.1
H-2000
Schematic
Circuit Diagram ....
.
14- 15
7.2 H-2001
SchematicCircuitDiagram
..... 18- 19
7.3 TunerUnit(CWE-083-A)
....17,20-22
7.4
Equalizer
Unit
(CWK-079-0)
. .
.
.
23- 24
7.5
Volume
Control Unit
(CWK-080-0)
.
..
. .
25- 26
7.6 Tone
Control
Unit
(CWK-081-0)
.
27
-
28
7.7
Amplifier
Unit
(CWK-082-A).
. . .
29
-
31
7"8 PowerSupplyUnit
(CWR-044-O1
..
.....32-33
7.9 Miscellaneous
8.
EXPLODED
VIEW
8.1
Cabinet
8.2 Chassis
..37-39
8.3 Mechanism
.....40-42
9. PACKING
METHOD
9.1
H-2000
9.2 H-2001
8
I
10
11
13
13
6.
7.
34
35-36
43
44
H-2000
H 2001
1
.
SPECIFICATIONS
SEM
I
CONDUCTORS
1 FET,
18 Transistors,
16 Diodes
POWER
SUPPLY
SECTION
POWER
SOURCE
AC
12OV,5OI6OHZ
POWER
CONSUMPTION
Less than
60W
(70W
H
2001)
AUXILIARY
OUTLET
150 Watts
Unswitched
(H
2000
Onty)
AMPLIFIER
SECTION
OUTPUT POWER
8W
(TJl.D.5%,8s))
PHONO
INPUT
150mV, 1MS)
FREOUENCY
RESPONSE
20
-
15,000H2
(lVlain
Amplif
ier
lnput)
SIGNAL
TO NOISE
RATIO
.
. .
.
.
More than 45dB
OUTPUT
IMPEDANCE
8A
TAPE
SECTION
CARTR IDGE
Any
8-Track Cartridge
TAPE
SPEED
9.Scm/sec
(3-3/4inlsec)
WOW
AND FLUTTER
Less than 0.25%
(WRMS)
CROSSTALK
More than 40dB
SIGNAL
TO NOISE
RATIO . . . . .
More than 40dB
FM
AND MPX
SECTION
FREOUENCY
RANGE
88.0
-
108MHz
SENSITIVITY....
10pV(lHF)
IMAGE
REJECTION
More than
38dB
SIGNAL TO NOISE
RATIO
More than 45dB
CHANNE
L
SEPARATION . .
More
than
24dB
(at
i kHz)
ANTENNA IIV]PEDANCE
3OOQ
AM
SECTION
FREOUENCY
RANGE
525
-
1,6O5KHZ
SENSITIVITY ....
10pV
(tHF)
IMAGE
REJECTION
More
than 45dB
SIGNAL TO NOISE
RATIO
More than
40dB
ANTENNA
Built-ln Ferrite
Bar
Antenna
DIMENSIONS
(WX
H X D)
H
2000
475x120x298mm
(1811116x423132x1123132in1
H2-OO1
476x236x381mm
(18314
x9-3/8x
15in)
WEIGHT
H-2000
5.7ks
(12.6tbs),
H 200i
9.0
kg
(21.1tbs)
RECORD
PLAYER
SECTION
(H-2001
Only)
MODEL
BSR
C141R-1 Automatic
Record Changer
RECORD
SIZE
.
7, 10, 12iN
SPEED
33,45, 78rpm
RECORD
HOLDING
CAPACITY
..
Up to 8 Same
Size Records
WOW AND FLUTTER
Less than 0.2%
CARTR IDGE
Ceramic
Stereo
Cartridge, Sapphire/Diamond
Stylus
SPEAKER
SECTION
SPEAKER
H 2000
j6cml6-1l2lx2
H-2001
Woofer
20cm
(8in),
Tweeter
7.7cm
(3in)Two
Way x
2
IIV]PEDANCE
8f,2
DIMENSIoNS
(wx
H
x
D) .......
H-2000
3o4x444x
190mm
(12x17-112x7-1l2in\x2
H 2001 343x
546x
263mm
(13112x21
1l2x
10-11
l32in\x2
H 2000 4.8ks
(10.61bs)
x
2, H-2001
8.2kq
(18.1
tbs) x
2
WEIGHT
2.
PARTS
LOCATIONS
2.1
H-2000
o
Top
View
VOLUME
CONTROL UNIT
AMPLIFIER UNIT
(cwK-080-0)
(cwK-082-A)
RE F LECTOR
PLAYBACK
HEAD
(CNC-977-0)
(CpB-g13-0)
TUNER
UNIT
(CW
E.OB3-A
)
POWE R SUPP
LY
UN
IT
(cw
R
-044-0)
BAR
ANTENNA
(crA-O1
1-0)
&
Rear
View
EOUALIZER
UN IT
(cwK-079-0)
SCLENOID
ASSE
M
B LY
(cxP-01
0-0)
CAM ASSEMBLY
(c
x
A-5
29-0
)
AC
OUTLET
(c
KP-004-0
)
fl$.$-$ffi
T
RA
NS'IO *
M E
R
LEAF
SWITCH,
54
(csN
-024-ol
LEAF
SWITCH,
55
(csN
-o21-ol
FLYWHEEL
(cN
R-032-0)
MOTOR
PULLEY
(cxA-530-0)
MOTO R
(cxM-019-0)
SHIELD
PLATE
(c
NC-984-0
)
(CTT-032-0)
For-
U.S.A.
(CTT-035-0)
For
Canada
i;i':,:,,,...'.,',,,.,.,.,.,.,i;.,.i..i.,.:;:,::::.i:i.:::::::,::,:,.:.:..:.,.:.::t::::::',:,:,:,:i:'::,:,:i:::::::...t:t:it.t.t
,.
.,.,,,
', i ,1
.,
,:,,,,',,,,,,,,iii',;iil:l
l ll.,,,
i:,:,,,:,':,:
ii
:,:,:,:,:,i
,,,,:::,:':
i:
:i :,:,:,:,:,1 :,:,:,:l:::l
:,1 :iiii
Fig.
1
SUB-CHASSIS
UN
IT
(c
x A-
783-0
)
ROTARY
SWITCH,
52
(csc-00
7-0
)
TONE
CONTROL
UNIT
(cwK-081
-0)
SCREW TE RM
INAL
(c
KA-002-0)
PIN
JACK
(c
K B-008-0
)
Fig.2
2.2
H-2001
o
Top
View
SHIELD
P
LATE
(A)
(c
N
c-98
7-0)
TUNER
UNIT
(CW
E-OB3-A )
POWE
R
SUPP
LY UN
tT
(cw
R-044-0)
VOLUM
E
CONTROL
UN
IT
(cwK-080-0)
ATVIPLIFIER
UNIT
(cwK-082-A)
PLAYBACK
REFhECTOR
HEAD
(cNC-917-O)
(CpB-013-0)
**-""t"r"w@+tU*
.\
\
da
H-2001
H-2000
Fis"
4
4
BAR
ANTENNA
(crA-012-ol
JACK AND
TE
RM
I NAL
MOUNTING
BRACKET
(c
N c-985-0)
Rear
View
EQUALIZER
UN IT
(cwK-079-0)
SOLENOID
ASSE M B LY
(cxP-01
0-0)
CAM
ASSEMBLY
(cxA-529-0
)
CLOSED
END
CONNECTOR
(c
KS
-0
12-Ol
PIN
JACK
(c
K B-008-0
)
LEAF
SWITCH,
54
(csN
-o24-o\
LEAF
SVVITCH,
55
(csN
-o2t
ol
FLYWHEEL
(cN
R-032-0)
TVIOTOR
PULLEY
(c
x A-5 30-0
)
MOTO
R
(CXM-019-0)
SHILED
PLATE
(c
N
c-984-0
)
TRANSFORMER
(crr-0
32-0
)
SH
IE LDE
D
WI RE
WITH
PIN PLUG
(CDE-1i5.0)
RED
(cor-1
16-0) BLUE
POWER
SUPPLY
CORD
WITH
CON
N
ECTO
R
(cDG-013-0)
Fig. 3
SU
B-C
H ASS
IS
UN
IT
(c
x
A-783-0
)
ROTA
RY
SWITCH,
52
(csc-00
7-0
)
TONE
CONTROL
UN
IT
(cwK-081
-0)
SCREW
TERMINAL
(c
KA-002-0)
3. CIRCUIT
DESCRIPTION
Fis.
5
o
Equalizer
Amplifier
Section
This unit
consists
of a
2-stage direct-coupled
amplifier.
Q101,
Q102
2-stage
direct-coupled
amplifier
becomes
NAB
equalizer
for
a
TAPE
playback.
o
Tone
Control
Section
A
signal
from
the volume control
section is
conveyed
to this
tone control section.
Two
separate controls
of
bass and treble, adopting
CR type
tone control in its circuit,
adjust
the
tone and conpensate
it
to
optimum
quality.
o
Volume Control
Section
This
unit
consists
of 2-stage amplifier, volume
and balance controls.
The
volume
control ad-
justs
voiume
level
of
any
selected
incoming
source signal
and
the balance
control
adjusts
uneven volume
level
in right
and left
channels.
o
Main Amplifier
Section
The signal from
the
previous
stage tone control
section is delivered
to this
4-transistor
main
amplifier section.
The output
stage, consists
of
2
transistors,
amplifies
total of
8
watts
maximum
output
power
covering the frequen-
cies
from 20 to
15,000H2
in less than
5%
total
harmonic
distortion.
H-2000
H-2001
1ST IF AMP
o3
FI!1 ANT
300s2
(Balanced
)
BAR
ANTENNA
o
FM
Section
The selected
FM
broadcast signal,
received
at
the
antenna,
is tuned
in
a
tuning
circuit
consist-
ing
of inductance
L I and
a
variable
capacitor;
after
amplification in
RF amplifier
Q
I the
signal
is
passed
to the next
tuning
circuit, a
variable
capacitor
and inductance
L2.
In
these
two stages,
the sensitivity
of
spurious
signals is
drastically
suppressed,
so as to improve
image
rejection
ratio and
overall spurious
rejection
ratio.
The signal is then
inserted to
mixer amp-
lifier
Q2.
This signal
produce
an output
from
the
mixer
which is the
intermediate
frequency
signal.
This IF
signal
(10.7MH2)
is
gained
through
IFT
T1
(intermediate
frequency
trans-
former)
and then
amplified
by IF amplifier
circuit
consisting
of
I transistor
and 1 IC.
The
IF
amplifier includes
2
high-selectivity
ceramic
filters
which
afford
an extremely
steep
cut attenuation
of frequencies
outside
the IF
band,
and
guarantees
selectivity
in excess
of
50dB
between
signals,
assuring
no
possibility
of
interference
from
adjacent
broadcasting
stations.
The IF
amplifier
also includes
limiting,
such
that
upon
reaching
a
certain
value,
signals are
not further
amplified,
so that
the
output
is
constant.
By virtue
of
the limiter
effect,
the
capture
ratio
is held
to
not
more
than
1.5,
and
interference
between
broadcasting
stations
of
the
same frequency
is
greatly
reduced.
Follow-
ing
the
IF stages,
the
signal
is
detected
in the
frequency
discriminator
consisting
of
T2,
T3,
D3
and
D4,
from
which
the
audio frequency
modulation
is
derived.
The
recovered
signal is
decoded
by
the MPX
(multiplex)
decoder
and
separated
into
stereo
right
and left
channel
AN/I IFT
T5
I\4PX
INDICATOR
cE R At\4 tC
FILTER
r4
Fis.
6
signals.
The
MPX circuit
employs
a monolithic
IC, ensuring
a
high
level
of
performance
and
reliability.
o
About
the PLL
(Phase
Lock
Loop)
This unit
is
adopting in
its
MPX
circuit,
a PLL
system,
which utilizes
no
coils
and
capacitors
that
are changeable
of
their characteristics.
PLL
is
a kind
of electronic
closed-loop
servo
system
and
has
a
electronic
control
device
to
detect
and
control
phase
variations
automatically.
PLL
functionates
in very
stable
to the
specified
tolerance
and separation
factor
and
maintains
MPX
circuit
in constant
condition.
o
AM Section
The selected
AM broadcast
signal
received
at
the ferrite
bar
antenna
is
mixed
with the
local
oscillator
output
(L6)
in
the
mixer
amplifier
IC
1.
The output
of
this
stage, the
intermediate
frequency
signal, is
passed
to
T4 which
consists
of a
matching transformer
and
a ceramic
filter
of
high
sensitivity, ensuring
good
band
width
and
adequate selectivity.
The IF
signal
is
pro-
cessed
through
2 stages
of
amplification
in IC
I
which
are
common to
the
FM
section.
The
amplified
IF signal
then
passes
to
the
AM
detector
consisting of
T5 and
D5
where the
audio
signal
component
is
recovered.
At this
point
the
AGC
is taken
off
and
feedback
through
a
network,
to
control
IC
1.
By this
means
the
audio
level
is
maintained
constant,
against
variations of
antenna
signal
strength.
RF
AMP
o1
IV]IX E R
a2
FM IFT
T1
MPX
CIRCUIT
AI\,1 DET
D5
FIVI CERAIVIIC
FILTER
2ND,3RD IF AMP
F2
o'r'''
u
AMOSC
CABINET ASSEMBTY
(cMX-085-0)
4. DISASSEMBLY
o
H-2000
@
ht-2001
7
Fis.
7
CABINET
ASSEMBLY
(cMX-086-0)
2L
A
T
I
e
6
'r
A
A
-?
glt
I
+
A
'f
'/
A .'\/
E'/
+
6
SOUARE
WASHER
(cBE
038
0)
SCREW,
M4
x
16
(810
280
0)
BEFORE
REMOVE RECORD
PLAYER
FROM
THE
CABINET, TURN 2 LOCKING
SCREWS
ON THE TOP TO
CLOCKWISE UNTIL
THEY
STOP, THEN
TURN 2
LATCHES
TOWARDS VERTICAL
AXIS INSIDE
THE CABINET
TO
REMOVE
RECORD PLAYER.
SOUARE
WASHER
(cBE
038 0)
SCREW,
M4
x
16
(810
280
0)
FLAT WASHER
(cBE
039
0)
SCREW,
M4
x 1'
(810
279-B)
RECORD
PLAYER
(BSR
C141R
1)
Fis.
8
H-2000
H-2001
5.
ADJUSTMENT
5.1
FM
IF ADJUSTMENT
(
1)
Previous
to the adjustments,
disconnect
either one end
of 4.7
ltF
I
I 0V capacitor
(C26)
from
the FM
discriminator.
(2)
Inject a signal of 70
to
B0dB
from
the
generator
scopg to
the RF
circuit
variable
capacitor
"hot"
side
(CfZ). (Alternate-
ly,
a
signal
of
about
100d8 may
be
inj
ected
directly
to
the antenna
termi-
nals)
(3)
Tune the core of IFT T 1
to
obtain
maximum
6(5"
wave
on the
generator
scope
CRT
display
(or
to obtain
rnaxi-
mum noise)
(4)
Adjust T2
wave shape
is, horizonta
good
linearit
Increasing
the
generator
scope
output"
check that
the
waveforil, does
not col-
lapse. If a
significant tendency to
col-
lapse is
noted, repeat
the
adjustments of
(2)
and
(3).
Note:
(a)
If a
generator
scope
is not
available,
use
a sweep
generator
with
a
CRT
oscilloscop
e.
(s)
(b)
If
other waves appear,
to
the S
curve, adjust
capacitor
slightly to
spurious
traces.
in
addition
the
variable
remove the
match
the
he
S
curve
1, solder
the
to the same
Fig.9
REGU
LATE
D
DC
POWE R
SUPPLY
BA
ANTE
GENERATOB
SCOPE
1 00ka
.;iiiiiiiiiirrii'lil:;-;rliili
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ffi#u'#
GND
L5
X
.--
and
T3
to obtain optimum
on the
CRT
display, that
rl and vertical
symmetry and
v.
DIAL PULLEY
-l
(
c)
It is
not
essential to
l}.7MHz
marker to
tl
center
p
oint.
(6)
After
alignment
is
completed
a.1
ptr
l10V
capacitor
(C26)
t
position
as
it
was before.
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10
5.2 FM
TRACKING
ADJUSTMENT
(
I
)
S
et
the
variable
capacitor
to
the
maxi-
mum
capacity position
and
set the
signal
generator
of
87MHz,
30% modulation
at
400H2,
with
a
signal level
of
20 to
40dB.
{2)
Adjust
L4
to
obtain
maximum
low
fre-
quency
output
from
the
tuner.
Set
the
variable
capacitor
to
Set
the
signal
generator
frequency
to
90MHz
and
tune the variable
capacitor
for
maximum
reception.
Peak
the output
by
adjustrnent
of
L1
andL2.
S
et
the
signal
generator
frequency
to
tr 05MHz
and
tune to the
signal
with
the
variable
capacitor. Peak
the output
by
adjustment
of
CT1
and
CT2.
Repeat
the
procedures
of items
(
5
)
and
(6)
for
optimum
tracking at both ends.
'(3)
(s)
(6)
(t)
(4)
mum
capacity position,
and
109MHz
signal
from
the signal
Tune
CT3 for
maximum low
output
from
the
tuner.
Repeat
the
pro0edures
through
(3)
to
establish
of 8l
to 109MHz.
the
mini-
apply
a
generator.
frequency
of
items
(
1)
the
band
width
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DC
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LY
L5
X
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PULLEY
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Fig.
12
S.G. Frequency
Variabl
e Capacitor
Position
Adjustment
Point
Circuit
Section
87lVl H
z
Maximum
Capacity
L4
OSC
90M l-lz
Tu
ned
Position
L1
L2
ANT,
R F
1 06M Hz
Tu
ned Position
CT1
CT2
ANT,
R
F
1
09MHz
M
in imu
m
Capacity
CT3
OSC
Fig. 13
5.3
MPX
SEPARATION ADJUSTMENT
(
1)
Set signal
generator
modulation
follows:
IVlodulation
frequency
IkHz
Percentage
of
modulation
Pilot
l0%
(1
.skHz
Dev.)
Main
60%
(40.5kH2
Dev.)
H-2000
!-t-200
t
(2)
Tune to a
gBMHz
monaural
signal.
(3)
Set the
signal
generator
level
to
25
to
30dB and
select
L-side
(or
R-side) modu-
lation;
adjust
5kQ
semi-fixed
variable
resistor
(R3
6)
so as
to illuminate
the
MPX indicator lamp,
AS
L5
X
DIAL
PULLEY
R36
SEM
I,F
IX ED
RESISTOR
1#
BAR
ANTE NNA
FM
SIGNAL
GENERATOR
PAD
300Cl
L-CH
VTVM
R-CH VTVM
MPX
MODU
LATO
R
OSC I
L
LOSCOPE
REGULATED
DC
POWE
R
SUPPLY
Fis"
14
Fig.'15
10
5.4
(1)
!r)
(3)
AM
TRACKING
ADJUSTMENT
Set the
variable
capacitor
at
maximum
capacity
position
and apply a
5
l5kHz
signal
from
the signal
generator
(30%
modulation
at 400H2).
Adjust
the oscil-
lator
coil
L6
for
maximum tuner output,
Set the variable
capacitor at minimum
capacitance
and
apply a
signal
of
1,660kH2.
Adjust
the
trimmer
capacitor
CT5
for
maximum
tuner output.
Apply.
a signal
of
600kHz
and
tune
the
variable
capacitor
for maximum
reception;
peak
the
output
by
adjustment
of
the bar
antenna
inductance
L5.
Apply
a signal
of 1,400kH2 and
tune
the
variable
capacitor
for maximum
reception;
peak
the output
by
adjustment
of
the
trimmer
capacitor
CT4,
(4)
(s)
(6)
Repeat the
procedure
of items
(
1)
to
establish
the
bandwidth
of
I,660kHz"
Repeat
the
procedure
of
for
optimum
tracking
at
items
(a)
and
(5)
both ends.and
(2)
515 to
BAR
NTEN
NA
iF-
BAR ANTAENNA
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12
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Fis.
16
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ANTE
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CSC
I
L
LOS(
REGULAI
DC
POWE
Supp
r_y
tFl
o
o
ffil
1
.ED
R
F
ig.
',7
S.G. Frequency
Variabl e Capacitor
Position
Adiu
strnent Point Circuit Section
51skHz
Maximum
Capacity
L6 OSC
600k H
z
Tu
ned Position
Bar Antenna
(L5)
ANT
1 400kHz
Tu ned
Position
CT4
ANT
1660kHz
Minimum
Capacity
CT5
OSC
F ig.
18
11
H-2000
H-2001
5.5
TAPE MECHANISM
ADJUSTMENT
Prior
to adjustments,
demagnetize
the
head and
clean
the
parts
where
the
tape threads
(such
as
head,
capstan,
guide,
etc.)
with
a soft
cotton
cloth
or swab moistened
with
a
little
alcohol
or cleaning fluid
Be sure to adjust
for
crosstalk and azimuth
when replacing the
head
or
cam, or
changing-
their
positions.
Adjust
alternately because
they
are
closely related.
O
ADJUSTMENT
TOOLS
AND
MEASURING
INSTRUMENTS
1. VTVM
2.
Test
Tape
(P-328,
PST
-4.2)
3. Screw
Driver
4.
Bond
and
Screw
Lock
5.5.1
CROSSTALK
ADJUSTMENT
1.
When the
cartridge door is opened
and
a
program
is
set
to I
visually,
be
sure the head
is
positioned
almost at the same height as
the
positions
of the
upper
end
of
the
tape
running of the tape
guide
and
the
detection
outlet
(L
side)
of
the
head.
(Fig.20)
2.
When
a
program
is
changed
over
to 4, be
sure
the
position
of the
head is almost at the
same height as
those of the
lower
end
of
the
tape running and
the
head detection
outlet
(R
side).
(Fie
.
2I)
3.
Connect
according to
Fig.
19 and insert test
tape
Pr328.
4.
Change
program
to 2,
and adjust by
turning
crosstalk adjusting
screw
(Fig
.
22) so as
to
minimize
VTVM
needle
vibration
both
in
Lch and Rch. After adjustment, sec-ure ad-
justing
screw
with
bond and
screw lock.
O
TEST
TAPE
O
HOOK
UP
DIAGRAM
TAPE
GU
IDE
(cx
A-526-0)
F
is.
19
TAPE
GUIDE
(cxA-5
26-0l
---
-Tast
Tape
Item
\\
P
-328
PST-4.2
Recording
Track
1
,3,5,7
F
u ll Tracks
Frequency
4OO Hz
B kHz
Lever
o dB
13
dB
Application
Crosstalk
Azimuth
E$tr
E+E
HEAD
(cPB-013-0)
F is.
20
CAM ASSE
M B LY
(CXA-529-O)
HEAD
(cPB-013-0)
Fig.
21
CROSSTALK
ADJUSTING
SC
REW
Fig.22
l2
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