IBM E74 Service Manual

BLOCK DIAGRAM
- 8 -
POWER INPUT
100~240VAC
(50/60Hz)
Line Filter
Degaussing Circuit
SMPS
TRANS
(T901)
SMPS CONTROL (IC901)
DPM
CONTROL
CIRCUIT
Voltage
Regulating
Circuit
105V
50V 13V 6.3V
TILT
Control Circuit
6.3V
13V
E
2
PROM
(IC402)
5V
OSD IC (IC301)
WT6805
H-Sync Sig V-Sync Sig I
2
C DATA(SDA)
I
2
C CLOCK(SCL)
VIDEO STV9211 PRE-AMP (IC302)
Signal
Cable
R
G
B
VIDEO STV9556 MAIN AMP (IC303)
5V
5V
H/V Sync Processor
( IC701 )
STV6888
V-OUT
( IC601)
STV9302
H-OUT
( Q706)
H-Linearity
Correction
DC/DC Converter
X-RAY
Protection
Circuit
FBT
( T701 )
Dynamic
Focus
Circuit
Auto Beam Limit
Vertical Blanking,
Brightness Control
- 160V
40V
400V
STEP UP
13V
D/D Feed Back
13V
MICOM (IC401)
SCL / SDA
H/V Sync,
PWM Control
12V
5V
13V
105V
13V-10V
50V
DY CDT
Heater ( 6.3V )
I
2
C
I
2
C
I
2
C
H/V
Sync
G
1
Screen(G2)
Dynamic Focus
Static Focus
H.V
R/G/B
Drive/Contrast
Cut-Off
H-DRV
B-DRV
B+
13V
TILT
COIL
DEGAUSSING
COIL
I
2
C
-10V
Vout 1 Vout 2
OSD CONTROL
BRIGHTNESS CONTRAST H/V POSITION H/V SIZE SPCC TRAPEZOID PIN BALANCE PARALLELOGRAM ROTATION RECALL DEGAUSS OSD TIME COLOR CURVE MOIRE LANGUAGE RESET VIDEO LEVEL

IBM E74 Specifications

General

Brand	IBM
Model	E74
Category	Monitor
Language	English