Yamaha ge 60

Page 1

STEREO GRAPHIC EOUALIZER

SERVICE MANUAL

YAMAHA NATLPAI sown GRAFH; euuauzen Lac-+30 if???"

it I!

at T! H Li: VH

FLJFVUL L
"W TX r F

:1

I "a
. v;-i at! |* . . . 3.. u, a. n, f v cll

9,01% 79 N ANAI V?! n-

'V'YYY'YVV'VV

AAAAAAAAAAAA

. .,
§,C)L4Ai iZF 3 RAFT} Ht erL run
I u_ '. r L!

Y Y r7 7 YYfi' rv r7 f r v
" - .. ,i .1 f . u;
A

_'_TTT'V

(sign v, .»r

¥Q=Il

AILLAAALLLAJLAAAALLA

a ,., .u n . ,
ALLLAAAAA
'Tl'T'YrrTTT'V'V'V'

A A 1A

. V v v v
\ - 7 l- I .. P ; I; i
L AALAAA AAA AAAAAAA

[vrv

r- -,_,,, , E, i V' _A fl

IMPORTANT NOTICE

This manual has been provided for the use of authorized Yamaha Retailers and their service 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 have therefore not been restated.

WARNING: Failure to follow appropriate service and safety procedures when servicing this product
I may result in personal injury, destruction of expensive components and failure of the
l 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.

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

The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The
research, engineering, and service departments of Yamaha are continually striving to improve Yamaha
products. Modifications are, therefore, inesitable and changes in specification are subject to change without
notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributor's
Service Division.

WARNING: Static discharges can destroy expensive components. Discharge any static electricity your l
body may have accumulated by grounding yourself to the ground buss in the unit (heavy I

gauge black wires connect to this buss).

o MM-60
IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck all work before ,
you apply power to the unit. J
k - _
.CONTENTS
TO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . 1 SIGNAL ROUTE SELECT PATTERNS ....... . . 5
SPECIFICATIONS.......................1 ICBLOCKDIAGRAM....................5
REARPANELS.... ..... ................2 PRINTEDCIRCUITBOARD.............6~9
BLOCKDIAGRAM......................3 SCHEMATICDIAGRAM..................10
INTERNALVIEW.......................4 WIRING.............................11
DISASSEMBLYPROCEDURES..............4 PARTSLIST.......................13~17

o YAMAHA
004630

NIPPON GAKKI (30., LTD. HAMAMATSU, JAPAN
2.6k-364- go Prlnted In Japan '85.6

Page 2

I TO SERVICE PERSONNEL

1. Critical Components Information.
Components having special characteristics are marked
! and must be replaced with parts having specifica~
tions equal to those originally installed.

EQUIPMENT AC LEAKA
2. Leakage Current Measurement (For 120 V Model UNDER TEST on sourvi

Only).
When service has been completed, it is imperative that ®
you verify that all exposed conductive surfaces are

properly insulated from supply circuits.

WALL :1
OUTLET INSULATING TABLE 7
0 Meter impedance should be equivalent to 1500 ohm
shunted by 0.15uF.
O Leakage current must not exceed 0.5mA.
0 Be sure to test for leakage with the AC plug in both
polarities.
I SPECI FICATIONS
Input Sensitivity/ Impedance Power Supply
LINE IN, TAPE 1V/47kfl U, C models AC 120V, 60Hz
MIC 0.3mV/47kfl A, K models AC 240V, 50Hz
1 ed 0 t/|_ ed 7 . V G modeI AC 220V, 50Hz
t t ce
3 u 9" mp 3" a model AC 115/23ov,501-
LINE OUT, REC OUT 1V/60052
77- 77 +0.5 Power Consumption 13W
Frequency Response 10 to IOOkHz, _ 1 dB .
' ' _ AC Outlet (U, C, R models) UNSWITCHED x 1
Center Frequencies 30Hz, 60Hz, 120Hz, 240Hz,
200W max.
480Hz,1kHz,2kHz,4kHz, _,_ __,
8kHz,16kHz Dimensions (W x H x D) 435 x112 x 275 m
" - (17-1/8"x4-7/16x
Equalizer Control Range 11 SdB
Weight 4.4 kg (9 lbs. 11 oz
Signal-to-Noise Ratio
(Input shorted, lHF-A Network, 1V output) Accessories Pin plug cords I2)
110dB MM-60 Electret COI
Mic Stand

Total Harmonic Distortion

Dr batter "AA"
(20 to 20kHz, 1v output) 0.005% V V

Specifications subject to change without notice.

Maximum Output (T.l-I.D. 0.1%) 10V
( U) ..... U.S.A. model

Subsonic FiIter Cutoff Frequency (C) ..... Canadian model
(Continuously variable) 5 to 30 Hz, 12dB/0ct (A) ----- Australian model
(6) ..... European mode!
Rumble Reduce Converts stereo signals below (K) ,,,,, British model
100Hz to mono. (R) Genera! model
Pink Noise Output 150mV r.m.s.
Display 10 bands, Switchable between

LorR, L+FI,MIC