MZ-N420D
44
44
6-7. SCHEMATIC DIAGRAM – MAIN BOARD (4/4) –
• See page 45 for IC Block Diagrams.
R857
Q871
R847
R873
R845
R860
R846
TP1356
TP1357
TP1358
TP315
IC852
TP1876
TP1879
TP1878
TP1877
C851
TP1875
C880
C871
TP1880
R874
TP1882
TP1883
TP1884
TP1885
TP1886
TP1887
TP1888
TP1889
TP1890
TP1892
TP1893
TP1894
TP1895
TP316
TP317
TP318
D171
D271
D371
R312
R849
R863
R273
*
2
*
3
*
1 C171, C271
2.2 : US
4.7 : EXCEPT US
*
2 R173, R273
10 K : US
4.7K : EXCEPT US
*
3 R174, R274
1 0 K : US
100K : EXCEPT US
R274
R173
R174
R271
R272
R171
R172
C271
C171
C173
C273
C377
C372
C371
C368
TP1360
C275
C174
R175
C274
R275
D851
C853
FB806
R850
CN872
R862
C175
C172
C272
W901
FB803
C375
C374
R361
C373
IC371
C399
J304
not used
1M
XP1501-TXE
220k
470k
100k
0
100k
AK6417AL-L
0.1
F
0.01
B
0.1
B
470k
02DZ2.4-Z(TPH3)
02DZ2.4-Z(TPH3)
02DZ2.4-Z(TPH3)
1M
0
0
10k
47k
10k
47k
0.0022
0.0022
0.1
0.1
0.47
22
4V
220
4V
0.22
10
0.22
10
MA728-TX
0.01
B
0
0
14P
1M
220
4V
0.0047
0.0047
4P
0
0.1
47
4V
100
22
6.3V
NJM2776RB2A(TE2)
0.1
*
1
*
1
*
3
*
2
✩
When IC852 is damaged, replace the MAIN board.