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MODEL LCD1830 MAIN PWB SCHEMATIC DIAGRAM(1/8)
10-1
MODEL LCD1830 MAIN PWB SCHEMATIC DIAGRAM(2/8)
10-2
MODEL LCD1830 MAIN PWB SCHEMATIC DIAGRAM(3/8)
10-3
MODEL LCD1830 MAIN PWB SCHEMATIC DIAGRAM(4/8)
10-4
MODEL LCD1830 MAIN PWB SCHEMATIC DIAGRAM(5/8)
10-5
MODEL LCD1830 MAIN PWB SCHEMATIC DIAGRAM(6/8)
10-6
MODEL LCD1830 MAIN PWB SCHEMATIC DIAGRAM(7/8)
10-7
MODEL LCD1830 MAIN PWB SCHEMATIC DIAGRAM(8/8)
10-8
MODEL LCD1830 CONTROL PWB SCHEMATIC DIAGRAM(1/1)
10-9
MODEL LCD1830 SW. REG PWB SCHEMATIC DIAGRAM(1/1)
10-10
CN1 1 2 3 4 5 6 7
F1
V++
Power supply: 13V (Voltage dependable on monitor brightness setting?)
Q3 + C1 330u D3a R1 2k2 2 Q2 BR 43 10k R2 Q4a D2 C3 3 V+ Cmp C9 100n Q10 R31 10k 4 3 2 7 1 8
Lamp On/Off Off: 0V On: 3.7V
1 15
5
R19 C15 R17 680k 2.2uF 270k R34 10k 2 25 3 3 25 14 U1C + 9 8
R20 680k
C17 2.2uF D4 6V2 'C2' V++
3
5 4
1
2
12
C26 1.4uF
Q12
1
Q13
+ U1B -
2
7 6 C8 C7
LM339 + 1 U1A -
Q5 2 26
1
R10 1k0
R8 6k8
R7 15k
R6 10k
FR Enable Fast switching off
5102 Q1
5 C4 R32 2k2 L1 33uH 9 8 CN4 P.1 C20 ? 7 6 0053 1707S C21 ? CN5 P.1 Document Number Rev erse engineering: Marc Nijdam Tuesday , Nov ember 01, 2005
R9 1k0 D3b R3 1k6
C10 ?
V+ Cmp R18 100k 10 11 2 D2 1 C27 1.4uF C6 C5 2.2uF Q4b 6 15 3 2 Q6 1
U1D + 13
C16 1.0uF
3
D1
R36 4k7 Q14 2 26 3 1
R4 1k3
V++ R33 10k 2 26 C11 3 ?
1 T1
Idem.
Q11
1
5 2
3
D12a
0.27V
R30 68k
D11b CN5 P.2 C25 D11a ? R28 680
D12b
D9b
Measure lamp current CN4P.2
4
R29 68k
C24 D9a ?
R25 680
Lamp
Q8 540 R1112 540 R1112
Q9 FMMT619 Title Size B Date: Inv erter Board ALPS UHP061104 NEC LCD1830 Rev 1.0 Sheet 1 of 1
FMMT619
6
Lamp