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Kenwood CS-4125A Service Manual
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Kenwood CS-4125A Service Manual

20mhz/40mhz oscilloscope
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20MHz/40MHz OSCILLOSCOPE
CS-4125A
CS-4135A
SERVICE MANUAL
FILTER
(B11-0540-04)
POWER
CAL
1V p-p ~ 1KHz
~
POWER SWITCH
RUBBER FOOT ; FRONT
(S68-0687-05)
(J02-0525-33)
REAR PANEL
(A83-0236-12)
RUBBER FOOT ; REAR
(J02-0565-04)
AUTO NORM FIX TV-F TV-L
CS-4135A
40MHz OSCILLOSCOPE
CH1 ALT CHOP ADD CH2
VERT
MODE
CH1 or Y
POSITION
VARIABLE
VOLTS / DIV
.
2
.
5
1
2
AC
FOCUS
INTEN
ILLUM
TRACE ROTA
KNOB
(K29-7255-03)
CHI
Z . AXIS INPUT
OUTPUT
WARNING
TO AVOID ELECTRIC
SHOCK THE POWER CORD PROTECTIVE
GROUNDING CONDUCTOR MUST BE CONNECTED
FOR CONTINUED PROTECTION AGAINST FIRE, REPLACE ONLY
WITH FUSE OF THE SPECIFIED VOLTAGE AND CURRENT RATINGS.
DISCONNECT POWER SUPPLY BEFORE REPLACING FUSE.
SELECTOR
~LINE VOLTAGE FUSE 250V
100
100V
T A
DO NOT
120
120V
REMOVE COVER.
220
220V
REFER SERVICING
T A
TO QUALIFIED PERSONNEL.
230
230V
SERIAL
KENWOOD TMI CORPORATION
KENWOOD TMI CORPORATION
© 2002-2/B51-1159-00 (K/K)
PUSH KNOB
(K24-3028-03)
MODE
SOURCE
X-Y
VERT CH1 CH2 LINE EXT
ON
OFF
CH2 INVERT
SLOPE
ON
OFF
C H 2 o r X
H O R I Z O N T A L
POSITION
POSITION
VARIABLE
VOLTS / DIV
SWEEP TIME / DIV
.
.
1
50
1
50
V
.
V
ms
m
m
20
2
20
.
.
.
10
10
5
10
20
.
.
BAL
BAL
50
5
1
5
S
2
2
2
5
5
1
1
CAL
CAL
GND
DC
AC
GND
DC
x 10 MAG
CH2
CH2
INPUT
INPUT
400V
400V
PK MAX
PK MAX
CAT 1
CAT 1
KNOB
(Large ; K29-7256-03)
(Small ; K29-7254-03)
42V˚ PK MAX
TO GROUND.
50/60Hz MAX W
100
AC SELECTOR
(E68-0619-05)
KNOB
(K29-7253-03)
TRIGGER
LEVEL
VARIABLE
CAL
5
2
1
1
2
50
5
20
µs
10
5
2
2
1
1
5
5
2
ON/
OFF
EXT TRIG
INPUT
42V
PK MAX
MOLD PANEL
(CS-4125A ; A63-0436-01)
(CS-4135A ; A63-0437-01)
CORD WRAP
(W01-0529-08)

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Summary of Contents for Kenwood CS-4125A

  • Page 1 POWER SWITCH RUBBER FOOT ; FRONT KNOB KNOB MOLD PANEL (S68-0687-05) (J02-0525-33) (K29-7255-03) (Large ; K29-7256-03) (CS-4125A ; A63-0436-01) (Small ; K29-7254-03) (CS-4135A ; A63-0437-01) REAR PANEL (A83-0236-12) Z . AXIS INPUT OUTPUT 42V˚ PK MAX WARNING TO AVOID ELECTRIC...

  • Page 2: Table Of Contents

    CS-4125A/CS-4135A WARNING The following instructions are for use by qualified personnel only. To avoid electric shock, do not perform any servicing other than contained in the operating instructions unless you are qualified to do so. CONTENTS SPECIFICATIONS ......................3 SAFETY ..........................6 CIRCUIT DESCRIPTION ....................7...

  • Page 3: Specifications

    CS-4125A/CS-4135A SPECIFICATIONS ITE MS CS -4125A CS -4135A Type Rectangular with internal graticule Acceleration Voltage Approx. 2kV Approx. 12k V Display Area 8 x 10 di v (1 div = 10 m m) V E RTICAL AXIS (CH1 a nd CH2) 1 mV, 2 mV/div ±5% , 5 mV/div to 5 V /div ±3%...
  • Page 4 CS-4125A/CS-4135A SPECIFICATIONS ITE MS CS -4125A CS -4135A TRIGGERING Triggering Source VERT : Input signal selection with VERT MODE control : CH1 input signal : CH2 input signal LINE : Commercial - use power source : Signal input through EXT TRIG terminal...
  • Page 5 CS-4125A/CS-4135A SPECIFICATIONS ITE MS CS -4 1 2 5 A CS -4 1 3 5 A CALIBRATE D S IGNALS Waveform Positive square wave 1 V pea k to peak ±3% Volta ge Frequency Approx. 1 kHz INTE NS ITY MO DULATIO N...

  • Page 6: Safety

    CS-4125A/CS-4135A SAFETY SAFETY Line fuse Before connecting the instrument to a power source, The fuse holder is located on the rear panel and contains carefully read the following information, then verify that the line fuse. Verify that the proper fuse is installed by the proper power cord is used and the proper line fuse is replacing the line fuse.

  • Page 7: Circuit Description

    CS-4125A/CS-4135A CIRCUIT DESCRIPTIONS The IC contains the CH1(CH2) position circuit, CH2 INV Vertical Attenuator Circuit circuit, and CH switch circuit. These are controlled by The attenuators of channel 1 and 2 basically consist the CH1(CH2) position volume and CH2 INV switch on...
  • Page 8 CS-4125A/CS-4135A CIRCUIT DESCRIPTIONS is the operating point voltage regulator for the output They constitute horizontal output amplifiers which feature amplifier. good linearity and low power consumption. Q315 and Q316 become conductive during X10MAG and increase Horizontal System the horizontal amplifier gain to 10 - fold.
  • Page 9 CS-4125A/CS-4135A CIRCUIT DESCRIPTIONS High Voltage Blanking Circuit Q8 oscillates at approximately 50 kHz applying the reactance of the converter transformer. The oscillation voltage appearing in the high voltage coil are turned into stable. [CS-4125A) The oscillation voltage appearing in the high-voltage coil...

  • Page 10: Block Diagram

    CS-4135A BLOCK DIAGRAM X80-1550-00 B/4 X65-1500-00 A/2 X80-1550-00 A/4 CH2 INVERT X80-1550-00 POSITION POSITION (OVERALL UNIT) S206 VR205 VR204 TRACE TRACE ROTA ROTATION ROTATION COIL VR302 CIRCUIT Q13,Q14 X65-1500-00 SCALE INPUT VERTICAL AC GND DC ATT. ATT. PRE AMP. SELECTOR ILLUM ILLUMINATION BUFFER...
  • Page 11 CS-4125A BLOCK DIAGRAM X80-1540-00 B/4 X65-1490-00 A/2 CH2 INVERT POSITION POSITION (OVERALL UNIT) S206 VR205 VR204 X65-1490-00 INPUT VERTICAL AC GND DC ATT. ATT. PRE AMP. SELECTOR BUFFER OUT PUT AMP. INPUT S401 S1 first S1 second Q3,Q4~Q15 X80-1540-00 X80-1540-00 A/4...

  • Page 12: Adjustment

    Sine-wave Generator (1) (Tektronix) SG-502 Sine-wave Generator (2) (Tektronix) 211B Square Wave Generator (HP) 3520 Capacitance meter (HIOKI) 2465B Oscilloscope (Tektronix) CG-911 Pattern generator (KENWOOD TMI) FC-756 Frequency counter (KENWOOD TMI) CASE JIGU 20M CASE JIG (KENWOOD TMI or H/C)
  • Page 13 In the state of two clauses, a main part is adjusted by VR104 so that the voltage of CN6-1 may be set to 37.50 V. Adjustment range: [CS-4125A] 66.95 V to 67.05 V [CS-4135A] 37.45 V to 37.55 V *1. Carry out and adjust SWEEP TIME to 1ms in the state of sweep.
  • Page 14 CS-4125A/CS-4135A ADJUSTMENT Adjustment Item Procedure point INTEN X-Y: ON CS-4125A] X80-1540 1) Spot is displayed on CRT and INTEN knob is made the position at [CS-4135A] 9:00. X80-1550 2) Adjust VR2 so that spot may disappear in the position at 9:00.
  • Page 15 CS-4125A/CS-4135A ADJUSTMENT Adjustment Item Procedure point CH2 10 mV, 1 mV 10 mV: VR55 MODE : AUTO AC-GND-DC : DC Square wave 1 mV: VR54 VERT MODE : CH2 VOLTS/DIV : 10 mV, 1 mV [CS-4125A] SWEEP TIME : 0.5 ms...
  • Page 16 CS-4125A/CS-4135A ADJUSTMENT Adjustment Item Procedure po int FIX TRIG level VR250 MODE : FIX AC-GND-DC : AC [CS-4125A] VERT MODE : CH1 VOLTS/DIV : 10 mV X65-1490 SOURCE : VERT VOLTS VARIABLE : CAL [CS-4135A] SLOPE : + (OFF) -(ON)
  • Page 17 CS-4125A/CS-4135A ADJUSTMENT Adjustment Item Procedure point CH2 input capacity 0.1 V : TC51 MODE : AUTO AC-GND-DC : DC 1 V : TC53 VERT MODE : CH2 VOLTS/DIV : 10 mV (standard) [CS-4125A] SOURCE : VERT VOLTS VARIABLE : CAL...
  • Page 18 CS-4125A/CS-4135A ADJUSTMENT Adjustment Item Procedure point MAG center VR303 MODE : AUTO AC-GND-DC : DC [CS-4125A] VERT MODE : CH1 SWEEP TIME/DIV : 0.1 ms X65-1490 SOURCE : VERT H. VARIABLE : CAL [CS-4135A] x 10 MAG : ON X65-1500 1) Input a 0.5 ms marker signal to the CH1 INPUT.
  • Page 19 CS-4125A/CS-4135A ADJUSTMENT Adjustment Item Procedure point CH2 square wave TC56 MODE : AUTO AC-GND-DC : DC (both CH) characteristic TC101 VERT MODE : CH2 VOLTS/DIV : 10 mV (both CH) [CS-4135A] TC 502 SOURCE : VERT V. VARIABLE : CAL (both CH) * Use of a 50 Ω...

  • Page 20: Parts List(Unit)

    Teile ohne Parts No. werden nicht geliefert. Parts No. Ref. No Parts No. Ref. No Name & Description Name & Description LN322GP LED; GREEN CS-4125A (Y70-2420-00) N09-0739-05 SCREW, SEMS PAN HD TAPTITE (M3*8) 150BTB31KT N10-2040-41 HEXAGON NUT (M4) N11-0040-41 FLANGE NUT (M4) A01-4132-02 CASE;...
  • Page 21 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.

  • Page 22: Parts List (Electrical)

    Teile ohne Parts No. werden nicht geliefert. Parts No. Ref. No Parts No. Ref. No Name & Description Name & Description C119 CE04LW2C3R3M CAP. ELECTRO 3.3u 160V CS-4125A OVERALL UNIT (X65-1490-00) C120 C90-3016-05 CAP. ELECTRO C151 CC45FCH1H120J CAP. CERAMIC A22-0878-13 SUB PANEL C152 CC45FCH1H120J CAP. CERAMIC...
  • Page 23 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 24 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 25 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 26 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 27 ✽ New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. Ref. No Parts No. Name & Description R611 RD14BB2C220J RES. CARBON 1/6W R801 RD14BB2C100J...
  • Page 28 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 29 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 30 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 31 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 32 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 33 ✽ New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. Ref. No Parts No. Name & Description S201 S60-0601-15 ROTARY SWITCH S401 S64-0612-08 LEVER SWITCH...
  • Page 34 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 35 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 36 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 37 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 38 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 39 ✽ New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. Ref. No Parts No. Name & Description S201 S60-0601-15 ROTARY SWITCH S401 S64-0612-08 LEVER SWITCH...
  • Page 40 Teile ohne Parts No. werden nicht geliefert. Parts No. Ref. No Parts No. Ref. No Name & Description Name & Description CN312 E40-7889-08 PIN CONNECTOR 9-8P CS-4125A COMPLEX UNIT (X80-1540-00) CN315 E40-7890-08 PIN CONNECTOR CN400 E01-0103-05 CRT SOCKET E31-2170-05 JUMPER WIRE CN406 E40-7883-08...
  • Page 41 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 42 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 43 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 44 ✽ New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. Ref. No Parts No. Name & Description R12-8501-05 RES. SEMI FIXED 2.2MB 0.5W R12-5026-05...
  • Page 45 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 46 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 47 ✽ New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. Ref. No Parts No. Name & Description R12-1528-05 RES. SEMI FIXED 0.2W R12-5524-05 RES.

  • Page 48: Schematic Diagram

    O V E R A L L U N I T ( X 6 5 - 1 4 9 0 - 0 0 ) 4 - 3 P 1 0 0 1 5 0 1 0 0 1 0 P 1 5 0 8 - 7 P 10 P 1 / 8 W 1 0 - 9 P CS-4125A/4135A...
  • Page 49 O V E R A L L U N I T ( X 6 5 - 1 5 0 0 - 0 0 ) 4 - 3 P 8 - 7 P 11 - 10 P 1 / 8 W CS-4125A/4135A...
  • Page 50 1 0 F 3 6 0 no use 1 8 0 3 6 0 no use no use 1 0 F 3 6 0 8 - 7 P 0.012uJ 2 50V 1 0 0 1 1 - 1 0 P CS-4125A/4135A...
  • Page 51 C O M P L E X U N I T (X80-1540-00 A/4) 1 0 - 9 P 1 0 - 9 P 1 5 0 6 - 5 P 1. 1 1 / 4 High Volt 1 / 4 High Volt 8 - 7 P 9 - 8 P CS-4125A/4135A...
  • Page 52 C O M P L E X U N I T 8 - 7 P 6 - 5 P C O M P L E X U N I T 9 - 8 P 9 - 8 P 6 - 5 P CS-4125A/4135A...
  • Page 53 C O M P L E X U N I T (X80-1550-00 A/4) 1 1 - 1 0 P 1 5 0 k F 6 - 5 P 1. 1 k F 1 2 - 1 1 P 1 3 - 1 2 P 4 0 6 3 CS-4125A/4135A...
  • Page 54 C O M P L E X U N I T 6 - 5 P 1 3 - 1 2 P C O M P L E X U N I T 1 2 - 1 1 P 6 - 5 P CS-4125A/4135A 1 2 - 1 1 P...
  • Page 55 C O M P L E X U N I T (X80-1550-00 A/4) 6 - 5 P 13-12P C O M P L E X U N I T (X80-1550-00 C/4 S/No. 605000~1) 12-11P 6-5P CS-4125A/4135A 1 2 - 1 1 P...
  • Page 56 PC BOARD(Component side view) (B/2) OVERALL UNIT (X65-1490-00 A/2 CS-4125A) (X65-1500-00 A/2 CS-4135A) CH1 wave form CH1 STEP ATT CH1 10mV, 1mV CH1,2 TRIG CH2 square wave shaping level CRT center ADD POSI CH1 V.GAIN BALANCE square wave characteristic CH1 input...
  • Page 57 PC BOARD (Component side view) (D/4) COMPLEX UNIT(X80-1540-00 A/4) ASTIG INTEN FOUCUS center Refer to the schematic diagram for the value of resistors and capacitors.
  • Page 58 PC BOARD (Component side view) (C/4) (B/4) Refer to the schematic diagram for the value of resistors and capacitors.
  • Page 59 PC BOARD (Component side view) (D/4) COMPLEX UNIT(X80-1550-00 A/4) FOUCUS center INTEN ASTIG Refer to the schematic diagram for the value of resistors and capacitors.
  • Page 60 PC BOARD (Component side view) (C/4) (B/4) Refer to the schematic diagram for the value of resistors and capacitors.
  • Page 61 CS-4125A/CS-4135A A product of KENWOOD TMI CORPORATION 1-16-2, HAKUSAN, MIDORI-KU, YOKOHAMA CITY 226, JAPAN...

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Cs-4135a

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