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Extracted text from philips mcb 146 service manual (Ocr-read)
Page 1
AMPLIFIER
Output p ower.......................................... .2 x 2W RMS
Signal-to-noise ratio.......................... -‰¥ 60 d BA (IEC)
Frequency respons e...................... .125 -“ 16000 Hz
Impedance loudspea kers.......................................... .8-„¦
CD PL AYER
Frequency rang e.............................. .125 -“ 16000 Hz
Signal-to-noise ratio........................................... .65 d BA
TUNER
FM w averang e.................................. .87.5 -“ 108 MHz
Sensitivity
-“ FM 26 dB sensitivit y......................................... .20 µV
Total ha rmonic disto rtion..................................... -‰¤ 5%
SPEAKERS
Bass reflex system
Dimensions (w x h x d ).134 x 230 x 152 (mm)
GENERAL INFORM ATION
ACPower.................................... .220 -“ 230 V / 50 Hz
Dimensions (w x h x d )..148 x 233 x 216 (mm)
Weight (with/without spea kers)..................................
........................................................ .appr ox. 3.65 / 1.53 kg
Power consumption
Acti ve........................................................................\
. .15 W
Stand by................................................................... .<4W
Specifications and external appea rance a re
subject to change without notic e.
TECHNICAL SPECIFICATION
1 - 2
Type /Versions :
Feature s
Board inused :
MCB146
Service policy
DISPL AY BOARD
MAIN BOARD
*TIPS : C -- Component Lever Repai r.
M -- Module Lever Repair
-ˆš -- Used
/05 /12 /55 89/ 16/ 85/
Feature di ffrence
RDS & DAB
VO LTAGE SELEC TOR
ECO S TANDB Y - DARK -ˆš
Type /Versions : MCB146
/05 /12 /55 89/ 16/ 85/
VERSION VARIATION
39/
39/
C
C
-ˆš
Page 2
1-3
LF Generator e.g. PM5110
Recorder
Use Universal Test Cassette CrO2SBC419 4822 397 30069
LEVEL METERe.g. Sennheiser UPM550
with FF-filter
S/N and distortion met e e.g. Sound Technology ST170
L
R DUT
or Universal Test Cassette
FeSBC420 4822 397 30071
LEVEL METERe.g. Sennheiser UPM550 with FF -filter
S/N and distortion metere.g. Sound Technology ST1700B
L
R DUT
CD
Use Audio Signal Disc
(replaces test disc 3)SBC429 4822 397 30184
Bandpass
250Hz-15kHz
e.g. 7122 707 48001 LF Voltmeter e.g. PM2534 DUT
S/N and distortion meter e.g. Sound Technology ST1700B
Frame aeriale.g. 7122 707 89001
Tuner AM (MW,LW)
To avoid atmospheric interference all AM-measurements have to be carried out in a Faraday´s cage.
Use a bandpass filter (or at least a high pass filter with 250Hz) to eliminate hum (50Hz, 100Hz).
RF Generator e.g. PM5326
Ri=50 :
Bandpass
250Hz-15kHz
e.g. 7122 707 48001 LF Voltmeter e.g. PM2534 DUT
RF Generator
e.g. PM5326
S/N and distortion meter e.g. Sound Technology ST1700B
Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).
Ri=50 :
Tuner FM
MEASUREMENT SETUP