dbx 224X-DS Service Instructions

Page 1

TYPE II NOISE-REDUCTION SYSTEM Model 224X-DS Service Manual

Notes: IRF 1MD is measured with 19 kHz and 20 kHz mixed 1:1, output 1 V. SHFTE IMD is measured with 60 Hz and 7 kHz mixed 4:1, output 1

Page 2

CONTENTS

SPECIFICATIONS 2
ADJUSTMENT PROCEDURE
PERFORMANCE TEST
ADJUSTMENT POINT
SCHEMATIC DIAGRAM
SCHEMATIC DIAGRAM
BLOCK DIAGRAM
WIRING BOARD LAYOUT (1) Component Side View 15
WIRING BOARD LAYOUT (2) Foil Side View 16
WIRING BOARD LAYOUT (3) Component and Foil Side View
WIRING LAYOUT
EXPLODED VIEW
REPLACEMENT PART LIST 20-27

SPECIFICATIONS

• ELECTRICAL
Frequency response(40 Hz to 20 kHz) +/-0.5 dB
(35 Hz to 20 kHz) +0.5/-1 dB
(30 Hz to 20 kHz) +0.5/-2 dB
Total harmonic distortion
( 30 Hz to 100 Hz) 0.5 %
(100 Hz to 20 kHz) 0.1 %
Intermodulation distortion 0.2 % (IHF)
0.2 % (SMPTE)
Dynamic range(below 1V) 105 dB
Equivalent input noise -88 dBV
Maximum input 6.5 Vrms
Maximum output 6.5 Vrms
Effective noise reduction 40 dB or more(depending on deck)
Unity gain(set at 200 mV) Adjustable from 20 mV to 2 V
CENEDAL
O GENERAL
Dimensions(W x H x D) 19"(17-1/8") x 1-31/32" x 8-3/4"
483mm(435mm) x 50mm x 222mm
(without rack mounting bracket)
weight 5.95 LDs.
- 2./ kg.
Power consumption 13 W

Notes: IHF IMD is measured with 19 kHz and 20 kHz mixed 1:1, output 1 V. SMPTE IMD is measured with 60 Hz and 7 kHz mixed 4:1, output 1 V.

Power requirement ..... 100-120 V/220-240 V. 50/60 Hz

Page 3
BEFORE ADJUSTMENT

  • Confirm that the voltage-selector switch is in the proper position.
  • Inspect the unit to be tested and verify that all interconnect cables are properly installed.
  • Allow a minimum of 10 minutes warm-up for the test equipments and the unit under test.
INSTRUMENTS REQUIRED

  • Audio signal generator
  • Oscilloscope
  • Digital voltmeter
  • Distortion meter and and a board dial of total and the second and the second
  • VTVM (Vacuum tube voltmeter)
  • Frequency counter
  • Toneburst generator

• POWER SUPPLY TEST

1. Verify the following power-supply conditions:

Probe location Test condition Tolerance
1 +12V +12.0 V +/-0.6 V
2 -12V -12.0 V +/-0.6 V
• LED TEST

1. Depress the power switch and verify that the POWER LED lights.

Mechanically center the calibration potentiometers VR701L, VR701R, V VX704R to the center of their angular rotation.

Page 4

• RMS SYMMETRY ADJUSTMENT

1. Set the controls as follows:

(RECORD/PLAY)
RECORD Off
PLAY Off
(MONITOR)
TAPE 1/TAPE 2 TAPE 1
SOURCE/TAPE TAPE
(DUBBING)
SOURCE/1 > 2 1 > 2

2. Connect the signal generator to both L and R inputs desinated "TAPE RECORDER 1, FROM TAPE RECORDER OUTPUT" and apply a 100 Hz, -10 dBV(316 mV rms).

3. Connect the oscilloscope to TP 4, and set it to 2 mV/div and 50 ms/div.

4. Observe the output on the scope.

5. Adjust a potentiometer VR702L for the output becomes symmetrical and clear.

6. Repeat this procedure for equal peaks on the wave shape at the following test points and potentiometers .

VCA SYMMETRY ADJUSTMENT

1. Set the controls as follows:

(RECORD/PLAY)
RECORD Off
PLAY Off
(MONITOR)
TAPE 1/TAPE 2 TAPE 1
SOURCE/TAPE TAPE
(DUBBING)
SOURCE/1 > 2 1 > 2

2. Mechanically center the calibration potentiometers VR701L, VR701R, VR704L, VR704R to the center of their angular rotation.

Page 5

3. Connect the signal generator to both L and R inputs desinated "TAPE RECORDER 1, FROM TAPE RECORDER OUTPUT" and apply a 1kHz, -10 dBV(316 mV rms).

(TAPE LEVEL - RECORD adjustment)

  • 4. Adjust VR707 "TAPE LEVEL RECORD" on the front panel to obtain a output of -10 dBV at L ch desinated "TAPE RECORDER 2 - TO TAPE RECORDER INPUT"
  • 5. Adjust VR703 for R channel.
  • 6. Connect the X-axis probe of the oscilloscope to the TEST JIG* (see page 6) triangle wave output terminal.

  • 7. Connect the Y-axis of the oscilloscope to R ch output terminal desinated "PREAMP OR RECEIVER TO PREAMP TAPE INPUT".
  • 8. Apply a staircase wave shape output to TP 9.
  • 9. Monitor the lissajous wave shape and adjust VR701R such that the output wave shape should be less than 5 mV.

10. Repeat this procedure for L ch, at test point TP 8 and VR701L.

(TAPE LEVEL - PLAY adjustment)

  • 11. Adjust VR709 "TAPE LEVEL PLAY" on the front panel to obtain a output of -10 dBV at L ch desinated "TAPE RECORDER 2 - TO TAPE RECORDER INPUT"
  • 12. Adjust VR706 for R channel.
  • 13. Repeat paragraphs 6, 7, 8, 9 for testpoint TP 11 (TP 10 for L ch.) and VR704R (VR704L for L ch.)
Page 6

• LED DISPLAY ADJUSTMENT of another is bas i date of rederedes langle edd toennoo it

1. Set the controls as follows:

1. Set the controls as follows:

Compared the constraints of the and the second second
(RECORD/PLAY ()
RECORD Off tD" on the fr "TAPE LEVEL - RECOR
PLAY Off RECORDER 2 - oh desinated "TAPE
for R channel. Adjust VR703
(MONITOR) to the oscilloscone -axis probe of the
TAPE 1/TAPE 2 TAPE 1 output terminal.
SOURCE/TAPE TAPE
(DUBBING)

SOURCE/1 > 2 1 > 2

  • Connect the signal generator to both L and R inputs desinated "TAPE RECORDER 1, FROM TAPE RECORDER OUTPUT" and apply a 1kHz, -10 dBV(316 mV rms).
  • 3. Adjust VR 01 for 4.5 Vdc at its center lead.
  • 4. Adjust VR 02 so that the all four rows of LEDs read 0 dB.
  • 5. Vary the level of the input from -60 dBV to +20 dBV in 10 dB steps and verify that the "RECORD IN" and "PLAY OUT" displays go from all LEDs off to all LEDs on in 10 dB steps (2-LED steps) over this input range.

TEST JIG

Page 7
• TRACKING TEST

1. Set the controls as follows:

(RECORD/PLAY)
RECORD Off S.C. Off
PLAY Off Cill of
(MONITOR)
TAPE 1/TAPE 2 TAPE 1
SOURCE/TAPE TAPE

(DUBBING) SOURCE/1 > 2 1 > 2

  • 2. Connect the signal generator to both L and R inputs desinated "FROM PREAMP TAPE OUTPUT" and apply a 1kHz, -10 dBV(316 mV rms).
  • 3. Adjust the "TAPE LEVEL RECORD" control on the front panel such that the output voltage at the L ch and R ch "TO PREAMP TAPE INPUT" is exactly -10 dBV. 4. Verify the following levels:
INPUT LEVEL (dBV) OUTPUT LEVEL (dBV)
0 -1 to +1
-10 -10
-20 -21 to -19
-30 -31 to -29
-40 -41 to -39
- 50 -51 to -49
-60 -61 to -59
FREQUENCY RESPONSE TEST

1. Set the controls as follows:

(RECORD/I PLAY)
RECORD On
PLAY On

(MONITOR) TAPE 1/TAPE 2 SOURCE/TAPE

(DUBBING) SOURCE/1 > 2 1 > 2

TAPE

TAPE 1 WOLLON BUT DESCRIPTION AND THE SAME AND

Page 8

2. With a 0 dBV(1.0V rms) sinewave to both "FROM PREAMP TAPE OUTPUT" input jacks and verify that the outputs at the "TO TAPE RECORDER 1 - TO TAPE RECORDER INPUT" jack is as shown for the following frequencies:

FREQUENCY (Hz) OUTPUT LEVEL (dBV)
20 +3.2 to +5.2
100 -0.5 to +1.5
lk 0
10k -4.0 to -2.0
20k +2.5 to +4.5

3. With a 0 dBV sinewave to both "TAPE RECORDER 1 - FROM TAPE RECORDER OUTPUT" input jacks and verify that the outputs at the "TO PREAMP TAPE INPUT" jack is as shwon for the following frequencies:

FREQUENCY (Hz) OUTPUT LEVEL (dBV)
20 -17.0 to -15.0
100 -1.5 to +0.5
lk 0
lOk +5.5 to +7.5
20k -7.5 to -5.5
• THD TEST

1. Set the controls as follows:

(RECORD/PLAY)
RECORD Off
PLAY Off
(MONITOR)
TAPE 1/TAPE 2 TAPE 1
SOURCE/TAPE TAPE
(DUBBING)

SOURCE/1 > 2 1 > 2

  • 2. Apply a -10 dBV(316 mV rms) sinewave to "FROM PREAMP TAPE OUTPUT" input jacks at the following frequencies.
  • 3. At the "TO PREAMP TAPE INPUT" jacks, measure the total harmonic distortion and verify that it does not exceed the following limit.
FREQUENCY (Hz) DISTORTION LIMIT
100 (2nd H.D) below 0.1 %
lk below 0.1 % .
10k (3rd H.D) below 0.1 %
Page 9
MAXIMUM OUTPUT LEVEL TEST

1. Set the controls as follows:

(RECORD/PLAY)
RECORD
Off
PLAY Off
(MONITOR)
TAPE 1/TAPE 2 TAPE 1
SOURCE/TAPE TAPE
(DUBBING)
SOURCE/1 > 2 1 > 2

  • 2. Apply a 1 kHz sinewave to "FROM PREAMP TAPE OUTPUT" and measure the output voltage at "TO PREAMP TAPE INPUT".
  • Verify that the output voltage is greater than approximately +16 dBV(6.5 V rms) at 1% THD.
NOISE TEST

  • 1. Set the controls as the above.
  • 2. Terminate the "FROM PREAMP TAPE OUTPUT" and "FROM TAPE RECORDER OUTPUT" inputs with 1 K-ohm resistor in parallel with 1000 pF to ground.
  • 3. Verify that the noise level is less than -88 dBV. (with DIN audio filter)
• TONEBURST TEST

1. Set the controls as follows:

(RECORD/PLAY)
RECORD
On
r LAI OII
(MONITOR)
TAPE 1/TAPE 2 TAPE 1
SOURCE / TAPE TAPE
(DUBBING)
SOURCE/1 > 2 1 > 2

  • 2. Connect the signal generator to the toneburst generator, and connect the toneburst generator output to L and R ch. "FROM PREAMP TAPE OUTPUT" input jacks of the reference unit encoded.
  • 3. Connect the output of the reference unit encoded to both "FROM TAPE RECORDER OUTPUT" jacks of the unit under test.
Page 10

  • 4. Apply a toneburst of 50 cycles of burst(approx. 50-ms) and 500 cycles off(approx. 500-ms) of at least 40 dB attenuation at 1 kHz.
  • 5. Observe the output wave shape at the "TO PREAMP TAPE INPUT" jacks of the unit under test.
  • 6. Verify that there is no more than 20 % overshoot on the first cycle and no overshoot for the remaining cycles, including the end of the wave shape.
  • 7. Replace the cable connecting the output of the toneburst generator to L and R ch. "FROM PREAMP TAPE OUTPUT" input jacks of the unit under test.
  • 8. Connect the "TAPE RECORDER 1 TO TAPE RECORDER INPUT" of the unit under test to "FROM RECORDER 1 - FROM TAPE RECORDER OUTPUT" of the reference unit decoded.

9. Verify that the wave shape at "TO PREAMP TAPE INPUT" output of the reference decoder has no more than 20 % overshoot on the first cycle and on the remaining cycles.

Page 11
• LED DISPLAY TEST

1. Set the controls as follows:

(RECORD/PLAY)
RECORD Off
PLAY Off
(MONITOR)
TAPE 1/TAPE 2 TAPE 1
SOURCE/TAPE TAPE
(DUBBING)
SOURCE/1 > 2 1 > 2

  • 2. Connect the signal generator to both L and R inputs desinated "FROM PREAMP TAPE OUTPUT" and apply a 1 kHz, -10 dBV(316 mV rms).
  • 3. Verify that the two rows of "RECORD (ENCODE)" LEDs now read 0 dB even if the "RECORD" switch is depressed.
  • 4. Replace the cable connecting the signal generator output to "TAPE RECORDER 1 -FROM TAPE RECORDER OUTPUT".
  • 5. Verify that the two rows of "PLAY (DECODE)" LEDs read 0 dB even if the "PLAY" switch is depressed.
  • 6. Vary the level of the input from -60 dBV to +20 dBV in 10 dB steps and verify that the "RECORD IN" and "PLAY OUT" displays go from all LEDs off to all LEDs on in 10 dB steps (2-LED steps) over this input range.
Page 12

ADJUSTMENT POINTS

12

Page 13

SCHEMATIC DIAGRAM

Page 14

SCHEMATIC DIAGRAM

BLOCK DIAGRAM

Page 15

WIRING BOARD LAYOUT (1)

Component Side View

APSAB069AH

Page 16

WIRING BOARD LAYOUT (2)

APSAB069AH

Page 17

WIRING BOARD LAYOUT (3)

Component Side View

APSLD235AH

APSVR065AH

Foil Side View

APSLD235AH

APSVR065AH

Page 18

Page 19

EXPLODED VIEW

Page 20
Table of Part Structure
---(12) Chassis Assy -----(12) Switch Bracket Assy
---(AP11) APSAB069AH

---List 3. (Printed Materials)

---List 4. (Packing Materials)

---List 5. (Accessories)

L--List 6. (Shipping Materials)

LIST 1. SET ASSY ELEMENTS
Numbers with ( ) listed in Ref.No. has exploded details.
Ref.No. MFR's Part No. Description Remarks
(11) AY224DS*01 Front Panel Assy 8 148
(12) AY224DS*02 Chassis Assy 1110
(AP11) APSAB069AH P.W.Board Assy - Cami
1A MS625AA002 Switch Cover
10 ML543AA003 Rack Mount Adaptor
13,15 NBR1255258 Push Knob
14 VK321SB001 Joint
16 VQ611SB008 Joint Switch
17 VS547XB001 Power Transfomer Sheet
18 MU985SX001 Cover
19 VVL511GE30 Serial No. Plate
311,16 BTPB3005ZB Bind T.T Screw M3 x 5 2
312 BTPS3006TZ Flat T.T Screw M3 x 6 a
B13 BSPB3012NZ Bind Head Screw M3 x 12
B14 BSPB4010NB Bind Head Screw M4 x 10
B15 BWU40855SB IT.Lock Washer M4 x 8.5 x 0.5
Page 21

11. Front Panel Assy

Numbers with ( ) listed in Ref.No. has exploded details.

Ref.No. MFR's Part No. Description and the second Remarks
(111) AM224XDS01 Escutcheon Assy 1231
(AP111) APSVR065AH P.W.Board Assy
(AP112) APSLD235AH P.W.Board Assy 181233
112 VN276SB036 Flat Rotary Knob 0
113 MU542SD001 Volume Bracket 1 22
114 VS741SB001 PCB Holder
51
B111 BTPS3006TZ Flat T.T Screw M3 x 6
LD111 QLBLN222RN LED (red) LN222RP

12. Chassis Assy

Numbers with ( ) listed in Ref.No. has exploded details.

Ref.No. MFR's Part No. Description Remarks
121 MU984SL001 Chassis BRECLIGHTSZ 82
122 MB951SL008 Rear Panel 83
(123) AY1BXDS*03 Switch Bracket Assy
124 NBR9227577 Foot Assy 01,2181/8,2191/8
7221/8,7231/8
AC121 ACAC029ULA AC Cord Assy 142L/R, 143L/
ACB121 VM270NB001 Bushing 1462/8, 1470/9
B121 BTPW3008AB Bras Tap Screw M3 x 8 CO2.05.06.07.49
B122 BTPB3005TB Bind T.T Screw M3 x 5 09,10,12,2030 8
B123,124,126,128 BTPB3005TZ Bind T.T Screw M3 x 5 1 2641/3
B127 BTPL3006TB Round Head Wood Screw M3 x 6 1004,801,802,800
B129 BWM30705SN Flat L Washer M3 x 7 x 0.5 108
111
PT121 TPL41A001K Power Transformer CCGB270JOT 613,14
015
S2 SS010226AJ Slide Switch C701L/R, 709L/R
11 1997 01 100 1/1
111. Escutcheon Assy
MFR's Part No. Description Remarks
ME95EAA051 Escutcheon 11.1985 (A\.386\)
VF132SB004 Button Guide mili a 7121./R. 7131./K.
VF122SB004 Button Guide 7361/3.7371/8
MFR's Part No.
ME95EAA051
VF132SB004
VF122SB004
MFR'S Part No.
ME95EAA051 Escutcheon
VF132SB004 Button Guide
VF122SB004 Button Guide
MFR's Part No. Description
ME95EAA051 Escutcheon
VF132SB004 Button Guide
VF122SB004 Button Guide
MFR's Part No. Description
ME95EAA051 Escutcheon
VF132SB004 Button Guide
VF122SB004 Button Guide

21

Page 22

123. Switch Bracket Assy

Ref.No. MFR's Part No. Description Remarks
1231 ML544SD004 Switch Bracket
(1.10 22) 1011 POL
B1231 BTPB3005TZ Bind T.T Screw M3 x 5 AP1127 Y224
C1 CKDU102KBM Ceramic 1000 pF 125V +/-10% 1
C2 WUA322EEXX Hi-Wrap Wire 11
11
S1 SP01AAW07A Push Switch

AP11. P.W.Board Assy (APSAB069AH)

Ref.No. MFR's Part No. Description Remarks
PSAB069C0X P.W.Board (without parts)
R1 BRU3280XA1 Thin Head Rivet M3 2 x 8 0 108.197
B2 BNHCI 30NS7 Heya Nut M3 101
B3 RSPP3008N7 Pan Head Screw M3 x 8 ber
DOITIGUOUL The second
CO1 7181 /R 7191 /R CEVG010ALX Electrolytic 1 uF 50V 171
7221 /R . 7231 /R of the test
742L/R.743L/R and the second second 10176
746L/R.747L/R Istenizi
807 and and the second
C02.05.06.07.08 CO4B103JTH Film 0.01 uF 50V +/-5% rera
09,10,12,703L/R Rind L.T. Screw M3 x 5 6122
704L/R 2012444000 18123.124.126.1
C04,801,802,803 CEAF471ALX Electrolytic 470 uF 35V 872005 1978 BIZZ
804 Flat L Washer N3 x 7 x 6.5 8129
C11 CEVE4R7ALX Electrolytic 4.7 uF 25V
C13,14 CCGB270J0T Ceramic 27 pF 50V +/-5% 191121
C15 CQ4B124JTH Film 0.12 uF 50V +/-5%
C701L/R,709L/R CCGB101J0T Ceramic 100 pF 50V +/-5% 52
725L/R,727L/R
733L/R VM.5110530
C702L/R,726L/R CCGB221KOT Ceramic 220 pF 50V +/-10% ;
C705L/R,732L/R CQPC103GEH Film 0.01 uF 100V
C706L/R,707L/R CQ4B154JTH Film 0.15 uF 50V +/-5%
730L/R,731L/R BSPESCIERZ 11th Esculoive
C708L/R CQSC101GEF Film 100 pF 100V
C710L/R,711L/R CQ4B104JTH Film 0.1 uF 50V +/-5% MFR's Part No .08.108
715L/R,734L/R mere conservestill
735L/R,739L/R NEB2EVV021 IIII
C712L/R,713L/R CQSC332GEF Film 3300 pF 100V VF13258004 1112
736L/R,737L/R EITI
C714L/R,738L/R CQSC331GEF Film 330 pF 100V
Page 23
Ref.No. MFR's Part No. Description of the state Remarks
C716L/R,740L/R CQ4B123JTH Film 0.012 uF 50V +/-5% 0.36
C717L/R,741L/R CKGB102KBT Ceramic 1000 pF 50V +/-10% 839,7570,60
C720L/R,744L/R CSVE100KLN Tantalum 10 uF 25V +/-10% 840,41,42,43,44
C721L/R,724L/R CEVE100ALX Electrolytic 10 uF 25V 45,46,47
745L/R,748L/R 000516179688 RD25523183X Carbon 97128MW 188 ohm 33/ 1851, 53, 55, 57, 39
805,806,808 00000001268 61,63,65,67,89,71
C729L/R COSC201GEF Film 200 pF 100V 1024
CN01 Y.1F04S0437 Junction Jack 100 00 81 57 N 250
CN02 Y.1F06S0357 Junction Jack 1 81 82 83 84 88 88
CNOS Y 1E0BS0287 Junction Jack 7991 10 7601 17
Chub 1010030202 01 10050
01 00710551 #N Diada (zanan) MA10561 al intera
D1 QUZIUSOL#N Diode (zener) MAIOSOL an in it in it in the the
QUZIUSIM#N Diode (zener) MAIOSIM UTATT'S/TABAT
U501L/R,502L/R QUZIIZOM#N Diode (zener) MAIIZUM 1.1214/1/1/JCC1
503L/R,504L/R The week state with a set weeks and the set of the set N1111, N/161/0
D801,802 QDSN4003AZ Diode IN4003 HATTA AN TERE
D803 QDSMA150XN Diode MA150 7361/8,7421/1
D804 QDSW02MXXG Diode W02M 745L/R,746L/R
83 R706L/R,737L/
HS1 MS736AD001 Heat Sink 82.071/0.2331.41
734L/R 738L/R
J701,702,703 YJP02S033Z Pin Jack (2P) P.2121./R.2431./I
704.705.706 - Westernes an ROZEPJEGIX Carbon I/4W 100-mbd- #/ RALEIVE
1111 separate and an ADDRESS MAN ANT A DU LANC BU LATUR
PA AC77460111 A Farth Wire Assy 01 ICAT 01 IATED
DE ACCNI 73III A Connection Cond Assu I mar of mered
F.5 ACCILIZOLA connection cord Assy Di lost di losta
01 0701204201 A abox, ALacator
19 QTC1384XGN Transistor 2501384 (R,S) TTTEL'N/JAZAN
Q701L/R Q1K0364X11 Transistor 25K364 (BL,GR) 111267,0111248
Q801 QTA1015XTT Transistor 2SA1015 (Y,GR) 11/221/19,3631.19
APTIN, P.W.Bpan Assy (APSVRA RY 1847, R , 754L/R
R01,02,03,06 RD25PJ332X Carbon 1/4W 3.3K ohm +/-5% R224L4R,755L/B
R04,05,07,08,09 RD25PJ103X Carbon 1/4W 10K ohm +/-5% N725676855667/0
10,11,12,18,26 1 R126L/R, 257L/II
27,28,33,708L/R 5%X03230AV24 RD25P3100X Carbon(stree states 10 ohes. 4/ R727L/R, 763L/I
739L/R,801,802 58 R728L/R, 244L/R
R13,14,73 RD25PJ822X Carbon 1/4W 8.2K ohm +/-5% 7590/8
R15.22 RD25PJ224X Carbon 1/4W 220K ohm +/-5% R730L/R
R16.20.7091 /R RD25PJ392X Carbon 1/4W 3.9K ohm +/-5% 8731178
7401 /8 NOLOT COULT the state of the s at trat of mater
P17 10 25 32 35 PD25P 1102X Carbon 1/AW 1K ohm +/-5% at inata-
37 38 48 7011 /0 NUL JI UIVEN
7301 /p 7601 /p
/J2L/K,/00L/K 0000010004 Caphon 1/44 200K abm 1/5%
KZI RU25PJ204X
R23 RD25PJ244X Larbon 1/4W 240K ohm +/-5% 016
R24 RD25PJ912X Carbon 1/4W 9.1K ohm +/-5% RITAL/R. NZLIM
R30 RD25PJ122X Carbon 1/4W 1.2K ohm +/-5% RD3
R31,49,50,52,54 RD25PJ363X Carbon 1/4W 36K ohm +/-5%
56,58,60,62,64 SPOLAAXBLA Bush Switch 501.02
66,68,70,72 503
R34 RD25PJ823X Carbon 1/4W 82K ohm +/-5%
New York Street Street 2/4

Page 24
Ref.No. MFR's Part No. Description Desc ripti ion of the 2'Alk Remarks
R36 RX2ATJ100B Metal-oxide 2₩ 10 ohm +/-5% CIEL P. 740LO
R39,767L/R,804 RD25PJ105X Carbon 1/4W 1M ohm +/-5% CTLALAS, MILLA
R40,41,42,43,44 RD25PJ821X Carbon 1/4W 820 ohm +/-5% C720L/8,744L/9
45,46,47 of , 25V 6721L/R,724L/H
R51,53,55,57,59 RD25PJ183X Carbon 1/4W 18K ohm +/-5% 7451/8,7481./9
61,63,65,67,69,71 Conservative. 805,808,208
R74 RD25PJ753X Carbon 1/4W 75K ohm +/-5% C729L/R
R75,76,77,78,79,80 RD25PJ472X Carbon 1/4W 4.7K ohm +/-5% TOND
81,82,83,84,85,86 eners Laboration 1 CN02
729L/R,760L/R Designation of the EQUO
R702L/R RQBPF3573X Metal-oxide 1/4W 357K ohm +/-1%
R703L/R RQBPF1214X Metal-oxide 1/4W 1.21M ohm +/-1% 10
R704L/R,710L/R RQBPF1002X Metal-oxide 1/4W 10K ohm +/-1% 02
735L/R,741L/R 0501L/R, 502L/R
R705L/R,711L/R RQBPF3322X Metal-oxide 1/4W 33.2K ohm +/-1% 503678.594678
714L/R,717L/R el fue o ucoosa 0801,802
736L/R,742L/R and the second se £080
745L/R,748L/R TR'S PETT SO. 0800
R706L/R,737L/R RD25PJ470X Carbon 1/4W 47 ohm +/-5%
R707L/R,733L/R RD25PJ104X Carbon 1/4₩ 100K ohm +/-5% 121
734L/R,738L/R
R712L/R,743L/R RD25PJ221X Carbon 1/4W 220 ohm +/-5% 3701.202.203
713L/R RD25PJ101X Carbon 1/4W 100 ohm +/-5% 204 205 206
R715L/R,746L/R ROBPF9092X Metal-oxide 1/4W 90.9K ohm +/-1%
R716L/R.747L/R ROBPF4751X Metal-oxide 1/4W 4.75K ohm +/-1%
R718L/R.749L/R ROBPF6811X Metal-oxide 1/4W 6.81K ohm +/-1%
R719L/R,750L/R RD25PJ203X Carbon 1/4W 20K ohm +/-5%
R720L/R,751L/R RD25PJ223X Carbon 1/4W 22K ohm +/-5%
R721L/R.752L/R ROBPF 3012X Metal-oxide 1/4W 30.1K ohm +/-1% statest
R722L/R.753L/R ROBPF3011X Metal-oxide 1/4W 3.01K ohm +/-1% TARO
R723L/R.754L/R RGOCPJ226X Metal-oxide 1/4W 22M ohm +/-5%
7241 /R. 7551 /R RD25PJ274X Carbon 1/4W 270K ohm +/-5% 30 50 50 109
87251 /R . 7561 /R RD25P.J200X Carbon 1/4W 20 ohm +/-5% PD 80 55 30 100
7261 /R 7571 /R ROBCE1654X Metal-oxide 1/4W 1.65M ohm +/-1% ST TE DE
7271 /R 7631 /R RD25P.1100X Carbon 1/4W 10 ohm +/-5% aliant es an co
7281 /R 7441 /R RD25P.1471X Carbon 1/4W 470 ohm +/-5% Chie mis as ibre
7591 /R NOLOI O ITTA ourbon 1/ 1/ 110 onn 55 65 510
7301 /R ROBPEIDOIX Metal-oxide 1/4W 1K ohm +/_1% 20,21,010
7311 /R ROBPELOOSX Metal-oxide 1/4W 1006 ohm +/-1% a upar as are
7581 /R 7611 /R ROBPF4991X Metal-oxide 1/4W A GOK ohm +/-1% IN HOAT
7621 /P ROBPEA003X Metal-oxide 1/4H 4.99K ohm +/-1% 11
764 RQDF1 4995X Carbon 1/44 4331 ohm +/-5% DULING PA 96 TS
765 RD25P 1225Y Carbon 1/41 2 2M ohm +/-5% AU1101,09,00,10
766 RD250 11 64V Carbon 1/41 1504 ohm +/-5% 132618,10011
770 RD25P0154A Carbon 1/41 2 74 ohm 1/ 5% 1.53
7711 /0 7721 /0 DORCE1924 Motal outda 1/4₩ 1 004 ohm +/ -5% 823
1/1L/K,//2L/K RUBUE 1824X Gambon 1/4₩ 1.82M onm +/-1% ASA ASA
(005 KUZSPJ303X carbon 1/4₩ SOK onm %C-\+ 130
01 02 SDOIAAVDIA Duch Suddah 121,48,38,38,24
501,02 SPUTAAXBIA Push Switch 10, 10, 00, 82, 82
503 SPUSTAXIIA Push Switch 55, 58, 70, 72
and the second second PROTECTION OF PE 0000 RSA
Page 25
Ref.No. MFR's Part No. sit() tis Description Assy (APSL020 Remarks
U01,02,03 QQM04558A& IC Determined 4558 df81s Part No. . ok instruction
U04 QQM02903AJ IC JRC2903
U05 QQ004051DE IC M4051BP
U06 QQM54563AE IC M54563P
U07 QQM54517PE IC M54517P (18 01))
U08 QQ000412CB IC HMCS412C - (2V (13)
U701L/R,702L/R QQM0353NYL IC LF353N
U703L/R,707L/R QQM01252AA IC uPC1252H2
U704L/R,708L/R QQM01253AA IC uPC1253H2
U705L/R,706L/R QQM00353NL IC LF353N
U801 QQM07812CJ IC NJM7812A
U802 QQM07912BJ IC NJM7912A
VR01 RP1NB203#1 Potentiometer 20K ohm-B
VR02 RP1NB103#1 Potentiometer 10K ohm-B Assy national transfer
VR701L/R,702L/R
703,704L/R
ERP63H50301*02 Potentiometer 50K ohm-B New Part Code
705L/R,706 ACCOUNCE
XT01 ECX15000201*01 Ceramic (OSC) 1.50 MHz New Part Code
ZZ01 VS223RH002 Silicon Sheet
ZZ02 VF164DN003 Bushing
ZZ03 NBR2666116 Collar Bushing q
ZZ04 NBR2675136 Collar Bushing g

AP111. P.W.Board Assy (APSVR065AH)

Ref.No. MFR's Part No. Description Remarks
PSVR065C0X P.W.Board (without parts)
P1 ACCNAC3ULA Connector Cord Assy
VR707,709 RVNA503B17 Rotary Volume 50K ohm-B 1/1

25

Page 26

AP112. P.W.Board Assy (APSLD235AH)

Numbers with ( ) listed in Ref.No. has exploded details.

Ref.No. MFR's Part No. Descrip otion Remarks
PSLD235C0X P.W.Board (without parts) 400220220000 100
(LED A1) AXLD008GEA LED Assy 91
he 31/
00M54863AE
00M545517FE40
P2 ACCNAC4ULA Connection Cord Assy 21
hai 21/
008
82011/8,2021/9
93 ACCNAC5ULA Connection Cord Assy OQHOIZEBAA 1704L/R, 708L/R

LED A1. LED Assy

Ref.No. MFR's Part No. Description Remarks
n die Parte T QLBLN222RN
QLBLN322GN
QLBLN422YN
VB721SW002
LED (red) LN222RP
LED (green) LN322GP
LED (orange) LN422YP
LED Case
7494_74 , 74%

LED A2. LED Assy

Ref.No. MFR's Part No. Description
QLBLN222RN LED (red) LN222RP AND ASSY (APSYNO A.W.S. TITS
QLBLN322GN LED (green) LN322GP MED'S DAVE NO ALL TAR
QLBLN422YN LED (orange) LN422YP
VB721SW002 LED Case and the set the state of the k ronzanduza
QLBLN222RN
QLBLN322GN
QLBLN422YN
VB721SW002
QLBLN222RN LED (red)
QLBLN322GN LED (green)
QLBLN422YN LED (orange)
VB721SW002 LED Case
QLBLN222RNLED (red)LN222RPQLBLN322GNLED (green)LN322GPQLBLN422YNLED (orange)LN422YPVB721SW002LED Case QLBLN222RNLED (red)LN222RPQLBLN322GNLED (green)LN322GPQLBLN422YNLED (orange)LN422YPVB721SW002LED Case

LIST 3. PRINTED MATERIALS

Ref.No. MFR's Part No. Description Remarks
1 KT224DSPXX Owner's Manual
2 KW000341AX Warranty Card
5 KF243400E4 Polyethylene Bag
1/
Page 27

LIST 4. PACKING MATERIALS

Ref.No. MFR's Part No. Description Remarks
41 KP224DS*01 Inner Carton
42 KS224DS*01 Outer Carton
43 KN1BX3**03 Partitioner L
44 KN1BX3**04 Partitioner R
45 KF604200E2 Polyethylene Bag No2
49 KN1BXDS*01 Pad A
1

LIST 5. ACCESSORIES

Ref.No. MFR's Part No. Description Remarks
51 ACSP023GEA Stereo Audio Cable
1/1

LIST 6. SHIPPING MATERIALS

Ref.No. MFR's Part No. Description Remarks
61 KM224DSP01 Master Carton
Page 28
osificantes MA's Part Ho. aliaters |

WFR'S Part No.
Stereo Audibies
-50-(nad)

dbx, Incorporated 71 Chapel Street, Newton Massachusetts 02195 617/964-3210

KD224DSPXX 0686TK Printed in Japan

dbx is a trademark of dbx Incorporated

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