Kenwood CS-1575D Service Manual
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Kenwood CS-1575D Service Manual

10mhz oscilloscope
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10MHz OSCILLOSCOPE
CS-1575D
SERVICE MANUAL
Filter
(B11-0540-04)
Panel
(A63-0234-03)
Push button
(K27-0590-04)
Rubber foot
(J02-0089-05)
Lever
(K27-3618-14)
Knob
(LARGE: K21-0892-03)
(SMALL: K21-0897-14)
Handle
(K01-0541-05)
Rear panel
AC selector
(E68-0619-05)
(E68-0619-05)
KENWOOD TMI CORPORATION
© 1997-02/B51-1131-00 (K/K)
Leg
(J02-0525-33)
Caution label
(B41-2091-14)
Cord wrap
(W01-0503-04)
Knob
(K23-0811-03)
Knob
(K21-0910-03)

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  • Page 1 10MHz OSCILLOSCOPE CS-1575D KENWOOD TMI CORPORATION SERVICE MANUAL © 1997-02/B51-1131-00 (K/K) Filter Lever Knob (B11-0540-04) (K27-3618-14) (K23-0811-03) Panel Knob Knob (A63-0234-03) (LARGE: K21-0892-03) (J02-0525-33) (K21-0910-03) Push button (SMALL: K21-0897-14) (K27-0590-04) Handle Caution label (K01-0541-05) (B41-2091-14) Rubber foot Rear panel AC selector...
  • Page 2 CS-1575D 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 ......................SAFETY ..........................

  • Page 3: Specifications

    CS-1575D SPECIFICATIONS Type..........Rectangular CRT with inner graticule Acceleration voltage .......Approx. 2kV Effective display area .....8x10divisions (1div.=10mm) Vertical Axis (Common to CH1 and CH2) Operation modes ......DUAL-H : Horizontal dual-trace mode DUAL-V : Vertical dual-trace mode : CH1 only : CH2 only : CH1=Y-axis, CH2=X-axis Dual-trace selection......CHOP operation when SWEEP TIME/DIV is set to 1ms or less.
  • Page 4 CS-1575D SPECIFICATIONS Triggering Trigger signal source ......DUAL: Trigger signals are selected automatically according to CH1 and CH2 waveforms. CH1 : CH1 input signal CH2 : input signal LINE : Commercial power source frequency EXT: Signal input to EXT. TRIG External triggering input impedance ......1MΩ, approx.
  • Page 5 CS-1575D SAFETY SAFETY Power cord Before connecting the instrument to a power source, care- The ground wire of the 3-wire ac power plug places the fully read the following information, then verify that the chassis and housing of the oscilloscope at earth ground.

  • Page 6: Circuit Description

    CS-1575D CIRCUIT DESCRIPTION Vertical Attenuator Circuit tion regulator: regulating the DC level of X signals. The electric current signals which were switched over by the The attenuators for CH1 and CH2 consist of rotary switches 3rd amplifier are input into the 4th amplifier consisting of Q4 and passive elements on a PC board.
  • Page 7 CS-1575D CIRCUIT DESCRIPTION Display Switch Circuit modulated signals drive the DC regeneration circuits D411- 414, C423 and C424, and provides signals for controlling IC206(1/4 and 2/4) is a transmitter for displaying chops. the brightness of the CRT G1 electrode. IC207(1/2 and 2/2) is a vertical and horizontal mode control Q410, 411 and 412 are a transistor for focus control.
  • Page 8 BLOCK DIAGRAM Q4~15 VERTICAL INPUT BUFFFER VERTICAL ATT. PRE. AMP OUTPUT SELECTOR MODE INPUT AMP. Q1, 24 INPUT BUFFFER VERTICAL ATT. PRE. AMP SELECTOR MODE INPUT Q2, 25 CH1.TRIG. Q16, 17 Q21, 22 CH2.TRIG. X AMP Q19, 20 HIGH BLANKING VOLTAGE CIRCUIT Q604~608...
  • Page 9 CS-1575D ADJUSTMENT To obtain the best performance, periodically calibrate the PREPARATION FOR ADJUSTMENT unit. Sometimes, only one mode need be calibrated, while Control Settings at other times, all modes should be calibrated. When one The control settings listed below must be used for each mode is calibrated, it must be noted that the other modes adjustment procedure.
  • Page 10 CS-1575D ADJUSTMENT Adjustment Item Procedure point VR401 -8.0V Adjustment range : -7.96V to -8.04V (±0.5%) Apply the digital multimeter probe to Pin of CN25 and adjust to the adjustment range. Vertical AMP operating DISP. MODE : CH1 VOLTS : 50mV (both CH)
  • Page 11 CS-1575D ADJUSTMENT Adjustment Item Procedure point CH1 VARIABLE Bal- DISP. MODE : CH1 VOLTS : 5mV (both CH) ance AC-DC : GND (both CH) V. VARIABLE : CAL (both CH) 1) Adjust by setting VARIABLE to the MIN (fully counterclockwise) position with reference to the MAX (CAL) position.
  • Page 12 CS-1575D ADJUSTMENT Adjustment Item Procedure point CH1 Input Capacity DISP. MODE : CH1 VOLTS : 10mV (reference) (0.1V) AC-DC : DC V. VARIABLE : CAL (1V) 1) Connect a capacity meter to the CH1 INPUT. 2) Measure the capacity of the 10mV. (38pF±3pF) 3) At 0.1V and 1V, adjust to obtain the same values as 10mV.
  • Page 13 CS-1575D ADJUSTMENT Adjustment Item Procedure point CH2 1 MHz TC56 DISP. MODE : CH2 AC-DC : DC (both CH) square wave CH2 VOLTS : 10mV V. VARIABLE : CAL * Use a 50-ohm terminator. 1) Input a 1 MHz square wave to CH2 INPUT and set it so that it extends by 6 divisions.

  • Page 14: Parts List

    CS-1575D PARTS LIST * 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. Add- Ref. No Parts No. Description ress Parts...
  • Page 15 DISASSEMBLY SCREWS Parts No. Parts Name Figure N08-0611-04 SCREW (For CORD WRAP) N09-0623-04 SCREW, SEMS PAN HD (M3X8) N09-0748-04 SCREW, SEMS PAN HD (M4X12) N67-4008-05 SCREW, SEMS PAN HD (M4X8) N14-0620-05 FLANGE NUT (M4) N19-0709-05 WASHER (M6) N30-4010-41 SCREW , PAN HD (M4X10) N88-3008-41 SCREW, FLAT HD TAPTITE...
  • Page 16 CS-1575D PARTS LIST * 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.
  • Page 17 CS-1575D PARTS LIST * 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.
  • Page 18 CS-1575D PARTS LIST * 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.
  • Page 19 CS-1575D PARTS LIST * 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.
  • Page 20 CS-1575D PARTS LIST * 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.
  • Page 21 CS-1575D(K) (1/5) CS-1575D...
  • Page 22 1 0V -0.7V -1.2V 630V -1.2V -0.7V 630V -4.3V CS-1575D(K) (2/5)
  • Page 23 1SS133 CH1 CH2 DUAL CH1 CH2 DUAL (H, V) X-Y D 222 1SS133 PHASE PHASE D 223 MA700 DISPLAY DISPLAY D 224 MA700 D 225 MA700 D 226 1SS133 (SWEEP) (X-Y) D 301 1SS83 D 302 1SS83 CS-1575D CS-1575D(K) (5/5)
  • Page 24 -1800V 136V -100V to 700V 100V CS-1575D(K) (4/5)
  • Page 25 1SS133 D 501 MA700 D 502 1SS133 D 503 1SS133 D 504 1SS133 D 505 1SS133 D 506 MA700 D 507 1SS133 CS-1575D(K) (5/5) D 508 1SS133 D 509 1SS133 D 601 1SS133 D 602 1SS133 D 603 1SS133 CS-1575D...
  • Page 26 PC BOARD (Component side view) COMPLEX UNIT(X80-1420-00) A / 8 FOCUS CENTER B / 8 G / 8 H. OPERATING VOLTAGE -8V ADJ. SWEEP TIME ADJ. (0.1m) V OPERATING VOLTAGE CH1 OVERSHOOT INTEN X-POSI C / 8 CH1 GAIN X-GAIN CH2 GAIN CH2 OVERSHOOT CH1 WAVEFORM...

  • Page 27: Parts Descriptions

    CS-1575D PARTS DESCRIPTIONS...
  • Page 28 CS-1575D SEMICONDUCTORS KMA01 KMA02 KMD02 SN74ALS00AN TC74HC00AP SN74ALS112AN NJM4558D 2SA1005(K) 2SC1923(O) 2SA1091(O) 2SC2909(S,T) 2SA1208(O) 2SC2910(S) 2SA1534A(R) 2SC3940A(R) 2SC1740S(R,S) 2SA933S(R,S) 2SA1156(L) 2SA1477(S,T) 2SA1209(S,T) 2SC3732(L) 2SC3787(S) 2SC2911(S,T) 2SD1406(Y) 2SK161(GR) 2SK389(BL) D2SBA20 S1VB60...
  • Page 29 CS-1575D A product of KENWOOD TMI CORPORATION 1-16-2, Hakusan, Midori-ku, Yokohama City 226, Japan B51-1124-00(MC)

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