Sherwood RVD-6090R User manual

RVD-6090R/RDS
AUDIO/VIDEO RECEIVER
@Sherwood AUDIO/ VIDEO RECEWER Rvb-6090R digiliok
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SAFETY PRECAUTIONS
WARNING
Before servicing this unit, familiarize yourself with the following precautions:
1
. Many electrical and mechanical parts in this
chassis have special safety characteristics that
often pass unnoticed and the protection
afforded by them cannot necessarily be
obtained by using replacement components
rated for higher voltage, wattage, etc.
Replacement parts that have these-special
safety characteristics are identified in this
manual and its supplements: electrical
components having such features are
identified by /\ in the schematic diagram and
the parts list.
Before replacing any of these components,
read the parts list in this manual carefully. The
use of substitute replacement parts that do
not have the same safety characteristics as
specified in the parts list may create shock,
fire, or other hazards.
. Before returning the set to the customer,
always do an AC leakage current check on the
exposed metal parts of the cabinet, such as
terminals, screw heads, and metal overlays, to
be sure the set is safe to operate danger of
electrical shock. Plug the AC line cord directly
into a 120 V AC outlet(USA Version) or 230 V
AC outlet(EU Version). (Do. not use a line
isolation transformer during this check.) Be
sure your AC voltmeter has a sensitivity of
5000 Q per volt or greater. Then connect a
1500 Q 10 watt resistor, paralleled by a 0.15 pF
150 V AC capacitor, between a known good
earth ground(such as a water pipe, or conduit)
and the exposed metalic is parts, one at a
time. Measure the AC voltage across the
combination of a 1500 Q resistor and a 0.15 pF
capacitor. Reverse the AC plug at the AC outlet
and repeat AC voltage measurements for each
exposed metalic part. Voltage measured must
not exceed 0.75 V RMS. This corresponds to
0.2 mA AC. Any value exceeding this limit
constitutes a potential shock hazard and must
be corrected immediately. :
At 5000 Q per volt or greater sensitivity,
the reading should not exceed 0.75 V.
AC Outlet
AC Voltmeter
Good earth ground, such as
a water pipe or conduit
1500 Q
10 Watt
0.15 pF 150 VAC.
Place the probe on each exposed metalic part.

SPECIFICATIONS
Measuring methods are based on IHF and IEC standard 268-3
Measurements conditions,unless otherwise noted :
Output resistive load = (8) ohms / Both channel driven
Tone(Bass, Treble), Balance, EQ control : Center Position , Other SW's : OFF
Nominal input level : 5mV for MM, 0.5mV for MC, 500mvV for general purpose inputs
Power figures should be kept minimum 10min. between 15 and 35°C
Terminator : 1000hm for MC, 1kohm for MM and general purpose inputs
Filter : IHF-A filter R/O = Rated Output
Power supply A: 120V/60Hz , Di 230V/50Hz
@
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SECTION
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| 3 | DAMPING FACTOR tkHz
4 | RESIDUAL NOISE 1kHz
1kHz
TOTAL HARMONIC DISTORTION H
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GHANNEL SEPARATION "oom | Rios | a8 | 245 | S85 |
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[70 FUNGTION CROSSTALK" [eO=TAPE MO] - | a8 [ 000860
ii FREQUENCY RESPONSE (dB) | CD;600mv) |__| ___1W___|Fa-kHz| 20-60 [10-55 _|
12| TONE CONTROL , +(8)dB }100Hz{ WBC aia
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14 | PHONO EQUALIZATION PHONO rjoorz | TAPEOUT | eB |S
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15 | HEADPHONE OUTPUT R/O
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DIN POWER at 1% THD oC ae

Nol _bescription | inpuT_ [FREQ] REMARK | UNIT
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20 cycle ON,480 cycle OFF cp [ate [ohms Ww
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cp__|foxe | Vol max [dB | -s5t15] -35%1 |
[2a [DC OFFSET VOLTAGE [cb |_| VOtmin. [mv
@ REAR AMP SECTION Measurements conditions : Input level (350)Mv
Rear level max., Master volume adj.Delay time 20ms
INPUT |FREQ.| REMARK | UNIT | LIMITL/R piel
@enns |W 255
| 2 | TOTAL HARMONIC DISTORTION <0.7
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@ CENTER AMP SECTION Measurements conditions : Input level (350)mV SPKR : LARGE.
Center level max., Master volume adj.
|No| DESCRIPTION INPUT | FREQ.| REMARK UNIT | LIMIT | NOMINAL
| 1. | POWER OUTPUT at 0.3% THD (8)ohms >55
4 | FRE RES(ONLY DOLBY) +3dB
5 | DC OFFSET VOLTAGE
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No DESCRIPTION CONTENTS-TEST TONE | CHAP |
DIALOG [DIALOG NOMALIZATION = 1KHz -20dBFS L/C/R/LS/RS
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30Hz -20dBFS LFE
OUTPUT CONFIGURATION TEST ee estar
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OUTPUT CONFIGURATION1 TEST REF : 1KHz OdBFS L/C/RILS/RS se(REF)| S| S| S| Y|
OUTPUT CONFIGURATION1 TEST 30Hz OdBES L/C/R/LS/RS L 20. bs | ststy |
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| OUTPUT CONFIGURATION2 TEST JsoHzodBFSLFE | th TL] Ss] S| NN]
fouTrUTCoMFGuRATIONZ TEST [REF iteowrsuoraaR omer t | S[s[W
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DOWNMIXING TEST / USING VER 2.0 2 7(REF) Ss S
ST ON -> SW: MO
a | UNIT |

TUNER SECTION
Measuring methods in confirmity with IEC standard 315
Measurements condition FM : Radio frequency = 98.1MHz, Audio frequency = 1kHz
Reference level = imV on ( 75ohms , 300ohms )
Deviation : MONO = +75kHz, Stereo = +67.5kHz+7.5kHz
MONO = + 40kHz, Stereo = +40kHz+7.5kHz
Test Point: TP 1 = 90.1MHz, TP 2 = 98.1MHz, TP 3 = 106.1MHz Filter = B.P.F at STEREO
@ FM SECTION Power supply : 120V ,60Hz
[NO DESCRIPTION UNIT | LIMIT L/R | NOMINAL L/R
1 | TUNING RANGE LOW~HIGH | MHz 87.5~108
STEP (A) AUTO/Man. kHz
STEP (D/RDS) AUTO/Man. kHz
2 | USABLE SENSITIVITY TP 1 dBf
SIN = 30dB (A) TP 2
S/N = 26dB (D/RDS) TP 3
3 | FULL LIMITING SENSE (A) OUTPUT =-3dB | dBf <15.2 <12.2
SNe Noms | oumreoe | | ae | ona |
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5 | AUTO SCAN ERROR (A) kHz
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7 | TOTAL HARMONIC DISTORTION MONO %
Tee NEN | stereo |” [ae
50dB QUIETING SENS. (A) MONO dBf S272
46dB QUIETING SENS. (D/RDS) STEREO <48.3
. CHANNEL SEPARATION (A) = 35
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10| FREQUENCY RESPONSE AT +1.5dB 20~12.5K
11| SPURIOUS RESPONSE (A)
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IF REJECTION | Pt | eB | eo | 80
13] IMAGE REJECTION (A) TP 3
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[19] RDS SENSITIVITY (DRDS)_—<|——SSSS~*dC

@ AM SECTION
Measuring methods in confirmity with IEC standard 315
Measurements condition AM - MW: Radio frequency = 1000/999kHz, Audio frequency = 400Hz
LW : Radio frequency = 207kHz, Audio frequency = 400Hz
Reference level = 5mV/m,10mV/m on 500hms Modulation = 30%
Test Point: MW TP1=(600)kHz TP2=(1000)kHz TP3 = (1400)kHz
LW TP1= 162kHz, TP2= 207kHz, TP3=252kHz
DESCRIPTION UNIT | LIMIT L/R | NOMINAL L/R
1 | TUNING COVER RANGE (A) LOW ~ HIGH MW | kHz
fee eee
STEP (A) AUTO/Man. kH
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OVER LOAD DISTORTION 5mV 80% MOD
FREQUENCY RESPONSE at -6dB MW Hz
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