Inkel PA2500RD User manual

DAD
MU
AACALUS
PUBLIC
ADDRESS
AMPLIFIER
1
(0)0)
1
AVA
ei
PA2500D,
PA1500RD,
PA1500D
ane
en 28

CONTENTS
SPECIFICATIONS 22: ec0l secs ace dt bene 4 et ae ete Bs Nebbpe ctets bad A Be esau ath ceed ial gel Gn aime 2
ELECTRICAL ADJUSTMENT PROCEDURE ............... ipo eee S She aera Rae oe ee aceon 3,4
PARTS LIST............. so Agha LiSaa eon Way te one lat andes Segara te Ia a fey isthe Seas rey ee ate fee Saedig! Th eos eS 5,6
TOP VIEW: OB,-P.G: BOARDS oe sie. 84 io srg a ated Gia ou ae a els ane goa ee ard oe elas dearer 4 6
@ PA-1500D/RD PARTS LIST ACCORDING TO EXPLODED VIEW .....................00. 7
@ PA-2500D/RD PARTS LIST ACCORDING TO EXPLODED VIEW ........................ 8
EXPLODED VIEW OF CABINET AND CHASSIS ..........0 0.0.00. 0 cee eee eens 9,10
SCHEMATIC. DIAGRAM? ons eb ogists, eek Sia ee Ge ea GP GR ee Sled stew dab ah, eels 11,12
DIAL-CORD STRINGING 2.2.26. oseceg Dede eel eee ne Pa eae Hee owe ewes age bee 13
BLOCK DIAGRAM .......... be Saag ln de Sua ene Sb tee veds aca a, Alaiye Bre BS whee eh thet atta i andcoe es 13
SPECIFICATIONS
Amplifier Section
Rated Output .........-....22008. PA-1500 (R)D: 60W (RMS)
PA-2500 (R) D : 120W (RMS)
Frequency Response .............4.. 80Hz to 20KHz
THD at 1KHz, Rated Output .......... Less than 1%
Tone Control .............00 0000 Bass +7/—12dB at 100Hz
Treble +7/—12dB at 10KHz
Signal to Noise Ratio................ More than 80dB
Input Sensitivity /Impedance
MIC, 2, 3g ce Sates bahia eles 0.25mV/200-20KQ
PHONO) erased abo utigand ange weet al oye 2.5mV/47KQ
AUX toh poten c eoee eine eS 80mV/47KQ
AUX 2 ners isk Ale at ideas Binal oo 1V/47KQ, Variable 80mV to ~.
Output Level/Impedance
Speaker Output ............... PA-1500 (R) D : 100V/165Q, 70V/83Q
PA-2500 (R) D : 100V/83Q, 70V/42Q
Line Output ................. 1V/10KQ
Muting Effect ................... 40dB
Tuner Section (for Receiver)
Tuning Range .............-...-... FM: 88-108MHz
AM: 525-1620KHz
Antenna Input .................000. FM: 3002
AM: Low Impedance
Usable Sensitivity .................. FM: 8uV
AM: S0uV
Signal to Noise Ratio................ FM: 60dB
AM: 45dB
Unit
Dimensions
.......
Wiedecpione
ams
PA-2500
(R)
D
:
420(W)
x
134(H)
x
296(D)
mm
PA-1500 (R) D : 420(W) x 107(H) x 296(D) mm
Unit Weight sy died. ood eu ole see ee PA-1500 (R) D: 11.2Kg
PA-2500 (R) D : 12.5Kg
NOTE:
Specifications
and
the
design
subject
to
change
without
notice
for
improvements.
ey eee

ELECTRICAL
ADJUSTMENT
PROCEDURE
1. AM SECTION
1-A. IF ALIGNMENT
a. Set the BAND SELECTOR switch to AM.
b.
Set
up
the
test
equipment
as
Fig.
1-1
and
set
the
GENESCOPE
output
level
to
80dB
(10mV).
c.
Adjust
T8C2,
T803
and
L803
so
that
the
figure
developed
on
the
oscilloscope
become
laterally
symmetrical
with
the
axis
of
symmetry
at
455
KHz
and
it
has
a
maximum
amplitude
as
well.
LINE OUT JACK
AM EXT ANTENNA
SET
UNDER
ALLGNMENT
IF
GENESCOPE
Fig. 1-1
1-B. RF TUNING ALIGNMENT
a. Set up the test equipment as Fig. 1-2.
b.
Set
AM
SG
to
30%
modulation
at
400Hz
and
30-40dB
output.
c.
Turn
the
tuning
control
so
that
the
dial
pointer
indicates
600KHz
and
tune
AM
SG
to
600KHz
and
adjust
T801
and
L802
to
maximize
audio
frequency
output
level.
d.
Turn
the
tuning
control
so
that
the
dial
pointer
indicates
1400KHz
and
tune
AM
SG
to
1400
KHz
and
adjust
AM
trimmer
capacitors
on
the
varicon
to
maximize
audio
frequency
output
level.
e.
Repeat
steps
c
and
d
so
that
output
is
maximized
at
the
given
frequencies.
AM SIGNAL
GENERATOR
LINE OUT
SET UNDER ALIGNMENT
AC VOLIMETER OSCILLOSCOPE
Fig. 1-2
2. FM SECTION
2-A. IF ALIGNMENT
a.
Set
the
BAND
SELECTOR
switch
to
FM.
b.
Set
up
the
test
equipment
as
Fig.
2-1.
c.
Adjust
the
cores
of
T703
and
T704
so
that
the
S
curve
developed
on
the
oscilloscope
becomes
point
sym-
metry
to
the
center
frequency
point
of
10.7
MHz
with
a
maximum
amplitude.
d.
If
the
GENESCOPE
is
not
available,
set
the
unit
detuned
and
adjust
the
cores
of
T703
and
T704
so
that
noise
output
is
maximized.
meee ee

LINE OUT JACK
40-80dB
(100nV-10mV)
OUT
SET UNDER ALIGNMENT IF GENESCOPE
Fig. 2-1
2-B. RF TUNING ALIGNMENT
a. Set up the test equipment as Fig. 2-2.
b. Set FM SG to 100% modulation at 400Hz and 6-8dB output (2.0-2.5uV)
c. Turn the tuning control so that the dial pointer indicates 90.0MHz and tune FM SG to 90.0MHz and adjust
cores of RF inductors, T701, T702 and L702 so that audio frequency output is maximized..
d. Turn the tuning control so that the dial pointer indicates 106MHz and tune FM SG to 106MHz and adjust
FM triminer capacitors on the varicon.and CT701 so that audio frequency outptu is maximized.
e. Repeat steps c and d so that output is maximized at the given frequencies.
DUMMY
ANTENNA
FM
SIGNAL
SET
UNDER
OSCILLOSCOPE
AC
VOLTMETER/
GENERATOR
ALIGNMENT
DISTORTION
ANALYZER
Fig. 2-2
3. MUTE LEVEL ADJUSTMENT
MIC 1, chime and siren signals have priority to the signal of MIC 3/PHONO and AUX input. You can adjust the
mute level by adjusting SVR101, 100Kohm semifixed resistor on the PRE AMP PCB.
4. AUX2 INPUT SENSITIVITY ADJUSTMENT
You can adjust AUX2 input sensitivity by adjusting SVR102, 50Kohm semifixed resistor on the PRE AMP PCB.
5. SIREN FREQUENCY ADJUSTMENT
You can adjust siren frequency by adjusting SVR601, 100Kohm semifixed resistor on the CALL SIGN PCB.
6. CHIME FREQUENCY ADJUSTMENT
You can adjust chime frequency by adjusting SVRS01, 20Kohm semifixed resistor, for the first tone, and
SVR502, 20Kohm semifixed resistor, for the second tone.
7. CHIME SPEED ADJUSTMENT
You can adjust the chime speed by adjusting SVR503, 10Kohm semifixed resistor on the CALL SIGN PCB.
8. CHIME LEVEL ADJUSTMENT
You can adjust the chime level by adjusting SVR504, 20Kohm semifixed resistor on the CALL SIGN PCB.
=4=

PARTS LIST
Ref No.
1C701
IC801
0701
Q702,Q703
Q704,Q705
Q706
Q801,Q804
D701
D702
D703
D801,D802
T701
T702
7703
1704
L701
L702
L703
T801
T802
T803
L801
Lgo2
L803
Q101,Q107
Q109,Q203
Q102,Q103
Q108,Q110
Q111,Q112
Q201,Q202
Q204
Q104,Q105
Q106,Q205
Q208
Q206,Q207
D101,D105
D201,1D204
VRI01
VR104,
VR201
. VR202,
VR203
SVRI101
SVRI102
R242,R243
C104,C105
’
C119,C122,
C124,C132,
C134,C143,
Ref No. | Parts No.
C305 3409222140
Parts No. Description Description Q’ty
K40368 TUNER BOARD €205,C209,
C216
2168411101 | IC HAL137W I C218 3409222140 | Capacitor Elect 220uF 25V 1
2168411104 | IC HALI97 1 C147 3409247140 | Capacitor Elect 470uF 25V 1
2018206101 | FET 2KTK19 (GR) 1
2008406103 | Transistor 3KTC1923 (Y) 2 | | K40455-01 PWR TR BOARD PA-1500(R)D
2008€06101 | Transistor 2KTC732(BL) 2
2028416101 | Transistor 2KTC1173(Y) 1 Q305,Q308 | 2028407109 | Transistor 2SD718(Q) 2
2008606105 | Transistor 2KTC1815(Q) 2 TH301 2438210101 | Thermistor ERT-D2 FHL503S 1
2058806100 | Diode 182236 1 R305,R308 | 3059278782 | Resistor CE 0.270hm 5W SINGLE 2
2058520116 | Diode Zener WZ120 1
2308060104 | LED R208 1 | |K40455-01 PWR TR BOARD PA-2500(R)D
2058304100 | Diode CDG24 2
2608001020 | Coil FM ANT 1 Q305,Q308 | 2028407112 | Transistor 2$D845(0) 2
2618001040 | Coil FM RF 1 TH301 2438210101 | Thermistor ERT-D2 FHL503S 1
2838001020 | Coil FM IFT 1 R305,308 | 3059278782 | Resistor CE 0.270hm SW SINGLE 2
2838501040 | Coil FM Quad DET 1
2648001020
|
Coil
FM
IF
Trap
1
K40555-02
SPEAKER
SELECTOR
BOARD
2638001020 | Coil FM OSC 1
2648601190 | Coil Inductor 18uH 1 R401,R406 | 3039332472 | Resistor M.O 3.3K ohm 1W 2
2608201010 | Coil AM ANT 1 D401,D405 | 2308060303 | LED G208 2
2848101020 | Coil AM IFT W/Ceramic H 230860104. | LED R208 1
2848001080 | Coil AM IFT 1
2648601200 | Coil Inductor 220uH 1 K40455-03 CALL SIGN BOARD
2638201030 | Coil AM OSC 1
284801010° | Coil AM DET 1 Q501,Q506, | 2008606101 | Transistor2KTC732(BL) 6
Q513,Q514,
| K40455 PRE AMP BOARD Q601,Q602
Q509 20086060105] Transistor 2KTC1815(O) 1
, | 2008206104 | Transistor 2KTA970(BL) 4 Q507,Q508, } 2008206105 | Transistor 2KTA1015(O) 5
Q510,Q511,
;| 2008606101 | Transistor 2KTC732(BL) 9 Q512
: D501,D504 | 2058304100 | Diode CDG24 2
SVRS5O1, | 3248322320 | Resistor Semifixed 22KB SR19R 3
SVR502,
SVR504
,| 2008606105 | Transistor 2KTC1815(O) 5 SVR503 | 3248310320 | Resistor Semifixed 10OKB SRI9R 1
: SVR601 3248310420 | Resistor Semifixed 100KB SR19R 1
C601 3409210140 | Capacitor Elect 100uF 25V 1
2008206105 | Transistor 2KTA1015(O) 2 C517 3409222140 | Capacitor Elect 220uF 25V ‘1
2058304100 | Diode CDG24 4 C512,C514 | 34098110070 Capacitor N.P 10uF 16V 2
a
Potentio Meter 20KA Li25 VMIOR 3 K40455-04 PWR IND BOARD
Potentio Meter 100KB Li25 VMIOR 2
K40456 POWER SUPPLY BOARD PA-1500(R)D
3248310520 | Resistor Semifixed 100KB SR19R 1
3248347320 | Resistor Semifixed 47KB SRI9R 1 Q301,Q302, | 2008606107 | Transistor 2KTC2229(0)
3039330472 | Resistor M.O 330hm 1W 2 Q303,Q304 | 2028406115 | Transistor 2KTC1625(O)
3409210140 | Capacitor Elect 100uF/25V i Q309 | 2028406113 | Transistor 2KTD 880(0)
D301 2058520110 | Diode Ze ner WZ172
C303 3409210140 | Capacitor Elect 100uF 25V
Capacitor Elect 220gF 25V-
|

Ref
No.
|
Parts
No.
Description
Parts
No.
Description
Q'ty
aa
Sa
C303
3409210140}
Capacitor
Elect
100uF
25V
1
|
C306
pein
eT
eapaciige
Eiset
2
200as
oN
305
3409222140]
Capacitor
Elect
220F
25V
1
F
|
R303,R304
|
3039101472
|
Resistor
MO
100
ohm
1W
C306
3409282270}
Capacitor
Elect
8200uF
S0V
1
R314
seas?
Resists
MEy
Onn
y
R303,R304
|
3039101472]
Resistor
MO
100
ohm
(
1W
2
|
R316
3039332472
|
Resistor
MO
3.3K
ohm
1W
aay
3639100472|
"Resistor
M010
ohra:
LW
F301
5508212430
|
Fuse
NB
31.8
2A/250V
KS
R316
3039322472|
Resistor
M.O
3.3K
ohm
1W
I
‘
|
(For
KS)
F301
5508212930]
Fuse
NB
31.8
4A/250V
KS
I
|
F301
5508212430
|
Fuse
NB
31.8
2A/250V
KS
(For
KS)
;
(For
Europe)
F301
5508212930|
Fuse
NB
31.8
4A/250V
KS
l
|
F302
5508212930
|
Fuse
NB
3i.8
4A/250V
KS
(For
Eurooe)
(For
KS)
F302
5508213430}
Fuse
NB
31.8
8A/250V
KS
\
F302
5508212933
|
Fuse
NB
31.8
4A/250V
UL
(For
KS)
(For
UL)
,
F302
Fuse
NB
31.8
8A/250V
UL
1
F303
5508213530
|
Fuse
NB
31.8
10A/250V
KS
(ae
mee
F303
508214
|
K40456
POWER
SUPPLY
BOARD
PA-2500(R)D
5508214030}
Fuse
NB
31.8
20A/31.8V
KS
i
CHASSIS
Q301,Q302 | 2008606107] Transistor 2KTC2229(0) — ee
|
Q303,Q304|
2028406115]
Transistor
2KTC1625(O)
2058100103}
Diode
Bridge
PB252
1
Q309 2028406113] Transistor 2KTD 880(0) 2058100102} Diode 16MQ40 1
_D301 2058520110} Diode Zener WZ172 3609104140] Capacitor Mylar 0.1F 200V 1
TOP VIEW OF P.C. BOARDS
& Capvitle, i
x 8
4 Looe ‘ad
eo
Re
oe i ae,
7 Obed uae 30
| Ne hue soseab Own” AE

¢PA-1500D/RD
PARTS
LIST
ACCORDING
TO
EXPLODED
VIEW
PARTS NO. DESCRIPTION PARTS NO. DESCRIPTION
62565 MAIN CHASSIS
$2566 FRONT CHASSIS
61116-07 FRONT PANEL
67168
67169
71050
AC CORD
‘| AC CORDADAPTOR
CORD STOPPER
BACK CHASSIS
a
x
+ co
K40455-06
K40455
*K40455-05
K40455-01
K40455-03
K40455-04
54 | BM4~x 6(B) SCREW
5 | #3BTC3 x 6(B) | SCREW
6 | BTC3x 6(B) SCREW
ww
62432 POTENTIO METER
68950-01 [BACK TERMINAL B.K.T NUT
74342 | COVER NUT
35240 POWER TRANS PRE AMP PCB
OUTPUT TRANS CHIME PCB
CHIME B. K.T SUB PCB
TR B.K.T. 2
a
68710 SPEAKER SELECTOR B. K.T Lt |
[et se are
a
eo
Pt |
Lae
pts
oo
74343
TOP
COVER
|
PHONE
JACK
73077-02
HEAT
SINK
POWER
LED
PCB
Ez
PCB
B.K.T
:
SPEAKER
SELECTOR
PCB
as
68717
PRE
AMP
PCB
B.K.T
68709-02 ASSISTANCE B. K. T(R) WPM 4x8 SCREW
71259 FOOT ASS’Y BIC 3x8 SCREW
75055 LEV.EL METER LEVER SWITCH
mm SPONGE R208 LED
- 72301 CONTROL KNOB 63161 LENS
26 | 25365-02 PUSH KNOB
27 | 90280 POWER SWITCH
90298 PUSH SWITCH
90277 __| VOLTAGE SELECTOR SWITCH
n N
a vululululu rAlutulu w Nl), oO
72303-01 CONTROL KNOB
72303-02 TT SONTEOL KNOB
+ 3BTC3 x 8(B) | SCREW.
FM DIPOLE ANT
TUNER BOX
DIAL POINTER
DIAL SCALE
TUNING SHAFT
POTENTIO METER
61118
66085
63162A
65057
67036A
67036A-02
DC TERMINAL ASS’Y
DC TERMINAL ASS’Y
69101-02 ~~ | VOLTAGE SELECTOR HOLDER
DIODE $10C4W/MICA
INSULATION PLATE 15113
90299
os
SLIDE SWITCH
90300
LOCK SWITCH
SCREW
K40368
TUNER PCB
G208
LED
WPTC3x 8
—
DiAL DRUM
G208
LED
2SD718
—+
TR
LEVER SWITCH KNOB
NUT
INSULATION MICA
PM2.6X 10
;
j
‘
i
3
'

|
|
q
|
|
¢PA-2500D/RD
PARTS
LIST
ACCORDING
TO
EXPLODED
VIEW
DESCRIPTION ; PARTS NO. DESCRIPTION Q’TY
|
62565
MAIN
CHASSIS
67169
AC
CORD
ADAPTOR
1
62567
FRONT
CHASSIS
71050
CORD
STOPPER
;
61116-05
FRONT
PANEL
95057
PHONE
JACK
6
74344 | TOP COVER 15112 POTENTIO METER 7
5
|
62428
BACK
CHASSIS
NUT
6
6
|
68951-01
BACK
TERMINAL
B.K.T
NUT
7
= 2
7
|
74342
COVER
K40455-06
_
|
POWER
LED
PCB
1
8
|
7307-01
HEAT
SINK
K
40455
PRE
AMP
PCB
1
|
9
|
35238
POWER
TRANS
FORMER
K40455-05
|
CHIME
PCB
1
10 | 35239 OUTPUT TRANS FORMER K40455-01 SUB PCB
it
|
63ggge.
CHIME
B.
K.T
K40455-03
SPEAKER
SELECTOR
PCB
1
12.
|
68893
PCB
B.K.T
K40455-04
TR
PCB
iz
13. | 68718 TR B.K.T BM4x 6(B) SCREW 13
14
|
68894
DIODE
B.K.T
#
3BTC3x
6(B)
|
SCREW
7
15
|
68710
SPEAKER
SELECTOR
B.
K.T
za
BTC3x
6(B)
|
SCREW
10
16
|
68717
PRE
AMP
PCB
B.K.T
)
ts]
#3WPTC3x6
|
SCREW
8
“17
|
68719
JACK
B.K.T
|
1
|
BTC3x
6
SCREW
33
18
|
68721
SHIELD
PLATE
Eo
8
62563
BOTTOM
COVER
It
|
|
60
|
2
68708-02
ASSISTANCE
B.
K.
T(L)
)
|
|
ot
|
WPM4x
8
SCREW
8
68709-02
ASSISTANCE
B.
K:
T(R)
|
1
|
BTC3x
8
SCREW
T
22
|
71259
FOOT
ASS'Y
90301
LEVER
SWITCH
T
a } 64 | R208 LED 1 |
SPONGE 1 66 | 63161 LENS 1
pecan brain
72301
CONTROL
KNOB
7
67
|
72303-01
CONTROL
KNOB
1
26
|
25365-02
PUSH
KNOB
68
|
72303-02
CONTROL
KNOB
1
27} 90280 POWER SWITCH ze 69 | #3BTC3x 8(B) | SCREW a
90298
PUSH
SWITCH
|
1
|
[70
|
67029
FM
DIPOLE
ANT
1
|
90277
VOLTAGE
SELECTOR
SWITCH
nn
|
61ti7
GRILL
1
|
~
69101-02
|
VOLTAGE
SELECTOR
HOLDER
72
[61118
TUNER
BOX
1
67036A
DC
TERMINAL
ASS'Y
|
1
|
73
|
66085
DIAL
POINTER
1
67036A-02
DC
TERMINAL
ASS'Y
74
|
63162A
DIAL
SCALE
| DIODE S10C4W/MICA 65057 TUNING SHAFT
70073
INSULATION
PLATE
15113
POTENTIO
METER
90299
SLIDE
SWITCH
WPTC3X
8
SCREW
4
36
{|
90300
LOCK
SWITCH
6
K40368
TUNER
PCB
1
ee ——} $$
37
|
G208
LED
5
66084
DIAL
DRUM
1
38
|
R208
LED
2
72302
LEVER
SWITCH
KNOB
|
!
ISD718
TR
4
NUT
vie
40
:
INSULATION
MICA
4
PM2.6
10
I
41 | 67168 AC CORD

EXPLODED VIEW OF CABINET AND CHASSIS
\
ee
/
UR
f
Lo
p10
UA
\
©)
(5)

SCHEMATIC DIAGRAM
ae be
PA-2500(R)D ONLY
x [oa
[a CHL! ps
Qo
cat
bate
=
y
i)
Wa
242=

.
Sew
nae aaa cern Ee cena name ae tan
: ri
ae xt nye i Sey stints at a a ii
DIAL CORD STRINGING
Ce on PULLEY
v=