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1.Location of PC Boards & Versions Variation
Location of PC Boards
AA AA AA
AA AA AA
Display Board AA AA AA
AAAA AAAA AAAA
AA
AA
AA
AA
AA
AA
AA AAAA AAAA AAAA AAAA AA
AA
AA AA AA AA AA A
AA AA
AA AAAA AAAA AAAA AAAA AAAAA
AAA AA AA AA AA
A AA
AA
AA AA AA AA
AAAAAAAAA AAAAAA AAAAAA
Main Board
Versions Variation
Type/Version MCM2320
/12 /12
Board in used Service Policy (EU) (APMEA)
Main board M M+C
Display board M M+C
Tips: C--Component Level Repair
M--Module Level Rpair
2.Technical Specification
ModuleMCM2320
TEST CONDITIONS:
1.POWER SUPPLY: AC.Accordiing to Ver
2.REF OUTPUT: 4 1W , Sound effect off
3.FM MONO: 22.5KHz Dev,1KHz MODULATION ,75 IMPEDANCE ,60dBu
4.FM STEREO : MAIN+SUB = 50KHz, PILOT : 10KHz,COMPOSITE: 40.0KHz
FM SECTION
TEST DATA
NO TEST ITEMS UNIT NOM. LIMIT
1# 2# 3#
87.5 87.5 87.5 87.5 87.5
1 Fvequency Range MHz
108 108 108 108 108
90.1 16 22 12 14 14
2 26dB QUENTING SENSITIVITY 98.1 dBf 16 22 12 14 14
106.1 16 22 16 16 14
3 -3dB LIMITING POINT dBf 20 26 8 9 10
4 FM IF REJECTION 98MHZ S/N=26dB dB 65 60 65 65 65
5 IMAGE REJECT 98MHZ S/N=26dB 40 25 40 40 40
MONO dB 65 60 69 66 65
6 S/N
ST 55 50 NA NA NA
7 OVERALL DISTERTION % 1 2 0.3 0.3 0.3
8 MODULATION HUM dB 45 40 60 57 59
90MHz dBf _ 19-35 23 21 21
9 TUNING SENS 98MHz dBf _ 19-35 23 21 21
106MHz dBf _ 19-35 23 24 23
10 STEREO CHANNEL SEPARATION 1KHz dB 25 18 54 50 51
11 THD 10% POWER 1KHz W _ 10