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RB23WABAS service manual
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Contents
Main
Model ID:RB23WABAS
Service Manual
ACER
Service
DBG DPBU IIDBG DPBU II
ACER_LCD_H233H_SM081126V1
Page
Page
Page
Page
Analoginput (VGA) treats all timings as PC-timings.
Page
Page
Page
Page
Page
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S4
S1
S6
S5
S2
S12
S11 S7
S10
S9
S8
S19
S18
S16
S17
S14
Page
Page
Page
S8
S13
S11
S12
S9
S20
S19
S18
S15
S14 S17
S21
S22
S27
S28
S25
Page
5.2Nothing display on screen (screen is black, color of LED is blue)
24 5.Troubleshooting (continued)
5.2Nothing display on screen (screen is black, color of LED is blue)continued
25
5.3Checking the back light unit
26 5.Troubleshooting (continued)
5.4Abnormal screen for VGA
27
5.5Abnormal screen (For DVI and the same for HDMI)
28 5.Troubleshooting (continued)
Page
5.7Abnormal plug and play operation for VGA
30 5.Troubleshooting (continued)
5.8Abnormal plug and play operation (For DVI and the same for HDMI)
31
5.9.2Checking the control circuit of vertical sync pulse
32 5.Troubleshooting (continued) ACERH233H
5.10Checking the resolution change IC movement
33
5.11Checking the DC/DC converter circuit
34 5.Troubleshooting (continued)
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Page
cedid
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ACER H233H Block digram
_8.2 SCHEMATICS POWER BOARDACER_LCD_H233H_
GND2-
41
23
6832209800P01
AIN L_
AOUT R_
AOUT L_
AIN R_
TO263 TO252
GND
VSS
JWTA2001WV2 12--
13
_8.4 SCHEMATICS INTERFACE_BD_VGA & DDC INPUTACER_LCD_H233H_
D SUB 15P-_
16 17
43
1234567 8910111213
_8.5 INTERFACE_DVI& DDC INTERFACEACER_LCD_H233H SCHEMATICS_
DVI D 24P-_
1234567 8910111213
44
_8.6 INTERFACE_BD_HDMIACER_LCD_H233H SCHEMATICS_
R353 4K7 5_%
HDMI 19P_
R354 10K 5_%
R352 4K7 5_%
_8.7 INTERFACE_BD_SCALER/RTD2482DACER_LCD_H233H SCHEMATICS_
Shielding
INL
GND
INR
NCA POINT6PIN/-
KEY1
AFN300 N2G11 P TWO-_-
A POINT 6PIN-
KEY1
_8.9 SCHEMATICS _BDOSD KEYACER_LCD_H233H_
1
25
6PINfor FFC
G
LED ORANGE_ LED WHITE_ POWER KEY
B
O