
XR-1780
– 17 –
– 18 –
5-2.
PRINTED WIRING BOARD – MAIN Board –
• Semiconductor
Location
Ref. No.
Location
D1
I-4
D2
G-5
D3
F-5
D12
H-2
D100
F-9
D350
H-7
D351
F-9
D503
C-7
D506
D-5
D551
C-6
D600
D-5
D601
D-1
D602
E-1
D603
D-2
D605
D-4
D606
B-4
D607
E-5
D608
D-6
D609
D-2
D610
E-5
D611
D-3
D620
B-5
D621
D-5
D640
C-2
IC1
G-4
IC350
H-8
IC450
G-7
IC500
B-7
Q10
E-2
Q30
H-6
Q31
H-6
Q32
H-6
Q60
E-3
Q100
E-9
Q101
E-9
Q102
E-9
Q103
F-9
Q104
F-8
Q105
F-8
Q106
F-3
Q350
I-7
Q351
I-7
Q553
B-9
Q554
B-9
Q600
E-2
Q601
D-2
Q602
D-2
Q604
E-3
Q605
E-4
Q606
E-4
Q608
E-4
Q610
E-5
Q611
E-5
Q612
E-3
(Page 23)
Summary of Contents for XR-1790
Page 3: ... 3 SECTION 1 GENERAL This section is extracted from instruction manual ...
Page 4: ... 4 ...
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Page 18: ...XR 1780 19 20 5 3 SCHEMATIC DIAGRAM MAIN Board 1 2 See page 16 for Waveform ...
Page 19: ...XR 1780 21 22 5 4 SCHEMATIC DIAGRAM MAIN Board 2 2 See page 25 for IC Block Diagram Page 24 ...