Kenwood CS 6010 HU Service Manual

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WARNING

i. 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 in-
structions unless you are qualified to do so.

2. High voltage up to 17000 volts DC is present when the oscilloscope is operat-
ing. Line voltage (100 to 240 VAC) is present on the power transformer, nn-ofl
switch, fuse holder. and line voltage selector. any time the oscilloscope is con-
nected to an AC power source, even if turned off. Always observe caution
whether the AC plug is removed from the AC power source. Contacting exposed
high voltage could result in fatal electric shock.

CONTENTS

SPECIFICATIONS
SAFETY .., ..........
CIRCUIT DESCRIPTION
BLOCK DIAGRAM ..........
ADJUSTMENT ............
TROUBLESHOOTING
PARTS LIST..
SCHEMATIC DIAGRAM
P.C. BOARD ..................
DISASSEMBLY .......
SEMICONDUCTORS .

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2|]

.ADJUSTMENT

Item Atari??? P.C.B. Procedure

X Gain VR303 X74-1480 CH2 VOLTS/DIV : 10 mV
TRIGGERING MODE : X-Y
Input the square wave signal having an amplitude of 50 mV into CH2, and
adjust VR303 so that the CRT amplitude in the horizontal direction becomes
5 div.

X Position VR306 X74-1480 VERTICAL MODE : CH2
CH2 AC-GND-DC : GND
Set the scope controls to display a trace to the graticule center.
Adjust VFISOG to position to trace to horizontal graticule when switched the
HORIZ, MODE switch to X-Y position.
Clockwise rotation of channel 2 position control should move up to 5 divi-
sions upward and counterclockwise rotation should move up to 5 divisions
downward.

Delay time VR101 X74-1480 HORIZ. MODE : ALT

VR102 CH1 AC-GND-DC : GND

A SWEEP TIME/DIV : 1 ms
B SWEEP TIME/DIV : 0.2 us
Rotate the DELAY POSITION control to 0.20 position and set the scope con-
trols to coincide A trace with the left and of the gratlcule scale, using the
horizontal position control.
Adjust VR101 to position 8 trace (intensified portion) to 0.2 div position.
Adjust VR102 to position B trace to 10 div. position (right end of the graticule
scale) when rotated the DELAY POSITION control to 10.00 position.

CAL Voltage VR5 X8I-2330 Apply 3 CAL signal to channel 1 input

VR6 Adjust VR5 so that one period becomes 0.1 ms (10 div),

Adjust VFI6 so that the amplitude becomes 0.2 V (5 div.)

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ADJUSTMENT

POWER SUPPLY UNIT (X68-1500-00)

FRONT

-Iov Adi.

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CTM5020 PIN ASSlegNMENT I100-pin FPTI (with RAM)

TROUBLESHOOTING

5|

B I
IOO
LEAD No. l 30
CTM5020 PIN DESCRIPTION
[ Pin No. IIO Pin Name Function Pin No. IIO Pin Name Function
1 I CONT Selection between E mode and normal mode 23 I ROA Readout monitor terminal
7 2 | A13 Address bus A13 24 O LEVX Outpon (8005H) D7 D/A Data DE~MSB
Latch signal
3 - VDD + 5 V power supply
L T t UDD
4 I A14 Address bus A14 7 25 ' TC 95 p' I
I TSDO T t ' GND
5 I A15 Address bus A15 I 26 as 'r I
. l ND
6 o INTO 1/2 period oI ROSF signal (Open plnI 27 ' TSD1 Te p" (G
- l
7 O VX3 Selection signal at analog switch to input the 23 VDD + 5 V power supp y _
endless VR voltage 29 I TSDZ Test pin (GND)
8 O VX2 Selection signal of analog switch to input the 30 O AXZ Selection signal of analog switch to output the
endless VR voltage cursor, H Variable, Delay Position, H Position
I I I . voltage
9 O VX1 SelactIon sIgnal of analog swnch to Input the
endless VFI voltage 31 O AX1 Selection signal of analog switch to output the
. . , . cursor H variable, Delay Position, H Position
10 0 VXO SelectIon sIgnal of analog sWItch to Input the volts 9
endless VR voltage 9
32 O AXO Selection signal of analog switch to output the
d t LSB or 08
II 0 DAO Outport I5004H) D0 WA 9 a I I cursor H variable, Delay Position, H position
12 o DAI Outpnn i8004H) D1 D/A data 1131 or Do) vokage
13 o DA2 Outpurt (8004Hl Dz D/A data (DZ or 010) as o AX3 Selection signal or analog switch to outputthe
14 o DA3 Outport (8004H) Da D/A data roe or MSB) cursor H variable. Delay Position, H Position
voltage
15 - VSS GND
34 0 H52 Selection signal of analog switch for the
16 O DA4 Outport (8004Hl D4 D/A data I04) readout X-axis signal
17 O DAS Outport I8004H) D5 DIA data (DSI 35 0 H51 Selection signal of analog switch for the
18 O DAG Outport (8004HI D6 D/A data (DE) readout X-axis signal
19 O DA7 Outport (8004) D7 D/A data (07) 36 0 TDIO Test pin (VDD)
20 0 Dim Outpurt (8005Hl DO (Open pin) 37 l TWE Test pin (VDD) #
21 o DAQ Outport (8005M Di (Serial blanking control 38 | TCK1 Test pin (VDD)
Signa" 39 I TST1 Test pin Ivoo)
22 0 Ron Readout monitor terminal

Pin No. IIO Pin Name Function Pin No. IIO Pin Name Function
40 - VSS GND 70 0 D00 Dot counter data
41 I l TSTZ Test pin (VDD) 71 0 COO Character ROM address IOpan pin)
42 | TADD Test pin IVDDI 72 I DO7 Character ROM YAaxis DAC data
43 | TCKZ Test pin IVDDI 73 | DOS Character ROM Y-axis DAC data
44 0 V52 Selection signal of analog switch for the 74 1 DOS Character ROM Y-axis DAC data
, Md X" 5'9"" 75 I 004 Character ROM Y-axis DAC data
45 0 VSl Selection mom! of analog swrtch for the 76 I 003 Character ROM V-axis DAC data
readout Y-axis signal
7 77 | SING Terminal for SINGLE signal
46 0 VAO Character Yvaxis DAC data
78 - VDD + 5 V I
47 0 VA4 Character Y-axis DAC data power supp V
79 | RIDM 10 MHz clock
48 0 VAE Character V-axis DAC data
80 I 10M 10 MH | k
49 o VA2 Character V-axis DAC data 2 c °° i
81 I HLDF H Id If' U!
50 O VA1 Character Y-axis DAC data 0 0 mp
82 | SGA S t
51 0 GETD Character X-axis data latch clock weep 98 e
83 I ROSP Readout off
52 O CAO Character counter data
- 34 l ROD Character counter reset
5:! - VDD + 5 V power supply
85 O HLDL Holdofi output
54 O CA4 Character counter data
86 O HOUB Readout unblanking
55 O CA3 Character counter data
37 0 ROB Readout blanking
56 O CA2 Character counter data 7
88 0 R00 Readout request
57 0 CA1 Character counter data
99 0 ROED Readout end
58 0 cos Character ROM address
90 - VSS GND
59 0 CDZ Character ROM address
91 l D7 Data bus D7
60 0 CD4 Character ROM address
92 I D5 Data bus D5
61 0 CD1 Character ROM address
93 l D3 Data bus 03
62 0 CD5 Character ROM address
94 | D1 Data bus D1
63 0 0C4 Dot counter data
95 I ALE Address/Data latch
64 0 CD7 Character ROM address -
96 D b D
65 __ VSS GND I D6 eta us 6
97 | D4 D t b D4
66 0 DOS Dot counter data a a us
93 I D2 D t b D2
87 0 DCZ Dot counter data a 3 us
99 I DO Dan I) DO
68 0 CBS Character ROM address a us
100 1 WR Write t' ' I
69 0 D01 Dot counter data Immg algna

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