Yamaha cx 630

Page 1

STEREO CONTROL AMPLIFIER

IMPORTANT N0 TICE ---\

This manual has been provided for the use of authorized Yamaha Retailers and their service
[:1 a personnel. it has been assumed that basic service procedures inherant to the industry, and
more specifically Yamaha Products, are already known and understood by the users, and
I:I "W" have therefore not been restated.
as ... .-
EI WARNING: Failure to follow appropriate service and safety procedures when servicing

this product may result in personal injury, destruction of expensive compo-
nents and failure of the product to perform as specified. For these reasons, we
advise all Yamaha product owners that all service required should be
performed by an authorized Yamaha Retailer or the appointed service
representative.

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iMPORTANT: The presentation or sale of this manual to any individual or firm does not
constitute authorization, certification or recognition of any applicable technic-
el capabilities, or establish a principle-agent relationship of any form

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The data provided is believed to be accurate and applicable to the unit(s) indicated on the

m .. . cover. The research, engineering, and service departments of Yamaha are continually'
vum |:| D striving to improve Yamaha products. Modifications are, therefore, inevitable and specifica-
_ tions are subject to change without notice or obligation to retrofit. Should any discrepancy

appear to exist, please contact the distributors Service Division.

WARNING: Static discharges can destroy expensive components Discharge any static
electricity your body may have accumulated by grounding yourself to the
ground buss in the unit (heavy gauge black wires connect to this buss).

W RM
We. IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck all
work before you apply power to the unit,

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I CONTENTS

TO SERVICE PERSONNEL . . ..... I BLOCK DIAGRAM ......... . . . . ..... . . . . 6
SPECIFICATIONS . . . . . . . . . 1 PRINTED CIRCUIT BOARD ........ . . . . .
REARPANELS....... .............. ....2 WIRING...... ........
INTERNALVIEW............... ........ 3 SCHEMATICDIAGRAM......
DISASSEMBLY PROCEDURES ........... . . . 3 PARTS LIST ................... . ..... . 13

JC BLficK/CIRCUIT DATA . . , . ......... . . 4/5

YAMAHA

YAMAHAHamama CORPORATION
Hamamatqu apan
3. SK- 807 K© Printed in Japan 90. 3

OEQ'XO

Page 2

CX-630

.I TO SERVICE PERSONNEL

omponents Information.

Components having special characteristics are marked A
rid rn st b§ replaced with parts having specifications
ual . ose originally installed.

- Meter impedance should be equivalent to 1500 ohm
shunted by 0.15fLF.

- Leakage current must not exceed 0.5mA.

- Be sure to test for leakage with the AC plug in both
polarities.

I SPECIFICATIONS

lnput Sensitivity] Impedance

Fhono MC .................... 100 uV/IOO {2
MM ...2.5mV/47kfl

CD/TUNER/TAPE/VCR/LD .......... 150 mV/47 kn
Input Sensitivity (New IHF)

Phono MC ........................... 33 MV

MM, ,,,,,,, ,0.83mV

CDITUNER/TAPENCR/LD ....... , . 50 mV
Maximum Input Signal

1 kHz, 0.03% THD, Phone MC ............... 7 mV

1 kHl, 0.01% THD, Phono MM ............. 170 mV
Output Level/Impedance

REC OUT ..................... 150 "IV/2.5 kn

PRE OUT ........................ 1.5V/47 57.
Maximum Voltage Output

20 Hz - 20 kHz 0.1% THD ............ 8.5V or more
Headphone Jack Rated Output/Impedance

Output Level (0.1% THD RL = 150 Q) ....... . 4.4V

Impedance ....................... . 82 52
Frequency Response

CD/TUNER/TAPE/VCR/LD . t . 20 Hz -- 20 kHz (1 0.2 dB)
RIAA EqualizationDeviation

Phono MO/MM ......... 20 Hz - 20 kHz (ES/10.2 dB)

Total Harmonic Distortion
20 Hz - 20 kHz
Phono MC to REC OUT, 3V ............... 0.002%

MllII to REC OUT, 3V ...... . 0.002%
ISOURCE DIRECT ON)
CDITUNER/TAPE/VCR/LD to Pre Out, 3V ...... 0.002%
Signalvto-Noise Ratio (lHF-A Network)
Phono MC (500 iLV Input Shorted) ............ 84 dB
MM (5 mV Input shorted) . . . . . . 94 dB

SOURCE DIRECT (Shorted) ...... . 106 :15
Residual Noise (IHF-A Network) ...... 8 itV
Channel Separation

(Vol Max.)

Phono MC. MM Input shorted

1 kHz/10 kHz ..................... 80 dB/7O dB

CDITUNER/TAFE/VCR/LD Input 5.1 kn Terminated

1 kHz/1O kHz ..................... 70 dB/GO dB
Tone Control Characteristics

Bass

Boost/Cut ................... :10 dB (20 H2)

Turnover frequency ............. 200 Hz - 400 Hz

TrebIe

Boost/Cut .................... 110 dB (20 kHz)

Turnover frequency ............... 2.5 kHz 5 kHz

EQUIPMENT AC LEAKAGE TESTER
UNDER TEST 0R EQUIVALENT
® :1 )- .-
oGrLLsT :l -I-
. L INSULATING TABLE 7
- POLARIZATION

This amplifier product is equipped with a polarized
alternating-current linepiug (a plug having one blade
wider than the other). This plug will fitinto the power
outlet only one way. This is a safety feature. (U,C Model
only)

Video Input Sensitivity/Impedance

VCR, LD ....................... 1 Vp-p/75 S'Z
Video Output Level/Impedance

VCR OUT, MONITOR OUT ............ 1 Vp-P/75 0
Filter characteristics

Subsonie .................... 15 Hz, -12 dB/oct
Continuous Loudness Control [Level Related Equalization)

Attenuation . a . . .............. #40 dB (1 kHz)
Gain Tracking Error

(0 - -60 dB) ......................... 2 dB
Power Supply

U.S.A, and Canadian models ......... AC 120 V/60 Hz

AC 240 V/50 Hz
..... AC 220 V/ED Hz
. AC 110/120/220/240 V 60/50 Hz

British and Australian models .
European model
General model

Power Consumption ....................... 30 W
AC Outlets
U,S.A, Canadian and General models
Switched (2) ' 200 W max.
Unswitched I1) .................... 200 W max.
British, Australia, and Europe models
Switched ('I) .................. 100 W max.
Dimensions (W x H x D) ............. 435 x 96 x 301 mm
(17-1/8" X 3-3/4"x11-7/8")
Weight ...................... 4.8 kg (10 lbs. 9 oz.)

* Specifications are subject to change without notice.

0 DIMENSIONS

23
:c
F _
E :I
in
2
3
.s
N 1
~- 1.1 u u u LJ
eoara
435(171/33 3% I I 5
F gems/r)

UNIT! mm (inch)

(59;