Technics RSDV 290 EG Service Manual

Page 1

ADO30301OC8

Service Manual

Cassette Deck

RS-DV290EG
Colour
(S)..........Silver Type

Remote
Central
Transmitter

SL-EHSSO SH-EHSSH

sB-EHssu RS-DVZBD SA-EHSJU sB-EHsso

SPECIFICATIONS
system sc-EHsso
Sound Processor SH-EHSQO
Because of unique interconnecting cables. when a component Tuner/Amplifier SA-EHSSO
requires service, send or bring In the entire system. co Player SL-EHSSU
Cassema Deck Hs-szso
Front Speakers SB-EHSQG

* : Made in Singapore.

Specifications

Deck system: Stereo cassette deck SIN (Signal level = max recordlng level. TYPE 11 type tape):
Track system: 4 track, 2 channel NR ufl; 56 dB (A weighted)
Recording system: AC bias Dolby B NH on; 66 dB [A weighled]
Bias frequency: 100 kHz Input sensitivity and impedance:
Erasing system: AC erase REC (IN): 150 mV/ 23 kn
Heads: Output voltage and impedance:
Deck 1 PLAY (OUT); 280 mV/ 360 51
(Playback head); Permalloy head General
Deck 2 Dimensions (WXHXD): 294m l85x281 mm
(Recording/Playback headl: Fem-alloy head Mass: 21 k9
(Erasing head); Double gap Ierrlte head
Mom's; Notes: Specifications are subject to change Without notice
Deck 1, 2 Capslan drive; DC servD motor Mass and dimensions are approximate
Tape speed: 4.8 cm/s
Wow and flutter: 0:16 "/e (WHMSJ

Manufactured under license from Dolby Laboratories.

Fas' mam "d W'MI'MBS: App'ox'cjggcsgnggg: 'Dolby" and me acumen symbol are trademarks or Dolby
Frequency response (Dolby NR ofl): Emmy

TYPE I (NORMAL); 20 Hz - 16 kHz (DlN)

TYPE 1'1 (HIGH); 20 Hz - is kHz (DlN)

TYPE IV (METAL); 20 H2 716 kHz (DlN)

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A. WARNING

This service information is designed for experienced repair technicians only and is not designed for use by the general public.

It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced prolessional technicians Any attempt to service
or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

Technics
1. Note

Refer to the service manual for Model No. SA-EH590EG, SA-EH590EP (Order No. AD0302008C8)
for information on Accessories and Packaging.

2. Location of Controls

3. Operation Checks and Component Replacement I

Procedures

- This section describes procedures for checking the operation of
the major printed circuit boards and replacing the main
components.

- For reassembly after operation checks or replacement, reverse the
respective procedures. Special reassembly procedures are
described only when required.

3.1. Checking for the main P.C.B.

Step 3)
emove the top cabinet.

9x4

- Check the main P.C.B. as shown above.

3.2. Checking for the operation P.C.B.
- Follow the (Step 1) - (Step 3) of item 3.1.

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IUI

Pin Terminal IIO Function
No Name

29 PL2 0 Deck 2 solenoid control signal
output

30 M2 0 Deck 2 motor drive control
signal output

31 ENC/DEC 0 Dolby NR record/playback mode
select signal output

32 DOLBY 0 Dolby NR ONIOFF control signal

ONIOFF output

33 E CS - EEPROM chip select signal
output
(Not used, open)

34

NC - Not used, open
I
36

37 LED ONT 0 LED color control signal output
38 PHOT02T l Deck 2 reel pulse detect signal
input

39 AD SW l Deck 2 mechanism switch
signal input

(Half, Mode, F REC |NH., R REC
INH.)

40 PHOTO1T | Deck 1 reel pulse detect signal
input

41 KEY2 l Operation key signal input

42 KEY1 l Operation key signal input

13. Measurements and Adjustments

Note:

This unit RS-DV290 is designed to operate on power supplied from
system connected.

13.1. Measurement condition

- Dolby NR switch is OFF

- Make sure heads are clean

- Make sure capstan and pressure roller are clean
- Temperature is 20 i 5 °C

13.2. Measurement instrument and special tool
- Electronic Voltmeter
- Frequency Counter

20

Page 61

- Follow the (Step 1) - (Step 3) of item 5.1.

(Step 2) r'l"%
Remove the
cable holder.

(Step 3)
Release the 2 claws, and then
remove the back cover ass'y. ,

(Stew) /

ny

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27

Page 149

701
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D702,704
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D701 703,
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0703704
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@723 E NOTES: - SIGNAL LINE '
E 1:) :AUDIO SIGNAL I
.- 0: .
32 REGULATOR @701 E M - q . TUNER SIGNAL :
g - AC N I . I ) indicates pm No. RIgm channel J
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K 77
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X J
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D.
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REGULATOR l
35 /STABILIZER 4% T FP792 REL/W
A DRIVE
0707
D705
rVP REGULATOR a
D711 32
0700709
FL1 <7
SYNC SWITCH' FL DISPLAY
ING
J_ (FL901) FL24-
POWER
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D740
SASYNC 1/1
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D901 -
+130 4-967

SAVDV290(EEB,EG) BLOCK DIAGRAM

Page 162

Installation for traverse unit

(Step 1)
(Step 2)
Align the boss oi traverse BOSS mite}: m: 2:11:56

unit with the slot of traverse lever
cam gear. '

Slot ol traverse
CBITI gear

(Step 3)
Force the claw of timing lever.

Hexagonal
wrench

Step 4) I
otate the hexagonal wrench in the direction
oi arrow, and then close the disc tray tully.

Page 209

input terminal

Pin Mark IIO Function

No. Divisior

28 PSTN l Position sensor detect signal
input terminal

29 SW2 | Disc tray position 2 detect
signal input terminal

30 SW1 | Disc tray position 1 detect
signal input terminal

31 SW3 | Disc tray open detect signal
input terminal

32 CCW 0 Motor drive control signal
output terminal (forward
direction)

33 CW 0 Motor drive control signal
output terminal (reverse
direction)

34 HALF 0 Motor drive control signal
output terminal (speed)

35 DVD- I Serial communication signal

CLK input terminal for DVD main
micro-computer

36 DVD- 0 Serial communication signal

CMD output terminal for DVD main
micro-computer

37 DVD- | Serial communication signal

STAT input for DVD main micro-
computer

38 DISC - Connected to GND through

CS resistor

39 SW4 | Clamp switch detect signal
input terminal

40 KEYZ | Operation key signal input

41 KEY1 terminal

42 RGN | Area select signal input

CS terminal

18. Replacement Parts List

Notes:

*lmportant safety notice: I Components identified by A mark have special characteristics
important for safety. I Furthermore, special parts which have purposes of fire-retardant
(resistors), high-quality sound (capacitors),low-noise(resistors),etc. are used. I When replacing
any of components, be sure to use only manufactures specified parts shown in the parts list. I *
Warning: This product uses a laser diode. Refer to caution statements.

*ACHTUNG:Die lasereinheit nicht zerlegen. Die lasereinheit darf nur gegen einc vom hersteller
spezifizierte einheit ausgetauscht werden. I *Capacity values are in microfarads (uF) unless

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