SERVICE MANUAL
COMPAQ
P110
MODEL
CHASSIS
SERVICE MANUAL
SPECIFICATIONS
CPD-520GS/520GST/520GST9
N3
TRINITRON® COLOR COMPUTER DISPLAY
CPD-520GS
US Model
Canadian Model
Chassis No. SCC-L04N-A
CPD-520GST
AEP Model
UK Model
Chassis No. SCC-L04N-A
CPD-520GST9
AEP Model
Chassis No. SCC-L04N-A
MICROFILM
Picture tube
0.25 0.27 mm aperture grille pitch
21 inches measured diagonally
90-degree deflection
Viewable image size
Approx. 403.8
× 302.2 mm (w/h)
(16
× 12 inches)
19.8" viewing image
Resolution
Horizontal: Max. 1600 dots
Vertical: Max. 1200 lines
Standard image area
Approx. 388
× 291 mm (w/h)
(15 3/8
× 11 1/2 inches)
or
Approx. 364
× 291 mm (w/h)
(14 3/8
× 11 1/2 inches)
Deflection frequency
Horizontal: 30 to 96 kHz
Vertical: 48 to 160 Hz
AC input voltage/current
100 to 240 V, 50 60 Hz, 2.0 1.0 A
Power consumption
Max. 160 W
Dimensions
498
× 505 × 474 mm (w/h/d)
(19 5/8
× 20 × 18 3/4 inches)
Mass
Approx. 31 kg (68 lb 5 oz)
Supplied accessories
See page 6
Design and specifications are subject to change without notice.
REVISED
CPD-520GS/520GST/520GST9
2
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground
and from all exposed metal parts to any exposed metal part hav-
ing a return to chassis, must not exceed 0.5 mA (500
microampers).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or
RCA WT-540A. Follow the manufacturers' instructions to
use these instruments.
2. A battery-operated AC milliammeter. The Data Precision
245 digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The "limit" indica-
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are
examples of a passive VOMs that are suitable. Nearly all
battery operated digital multimeters that have a 2 V AC
range are suitable. (See Fig. A)
WARNING!!
NEVER TURN ON THE POWER IN A CONDITION IN
WHICH THE DEGAUSS COIL HAS BEEN REMOVED.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
¡ ON THE SCHEMATIC DIAGRAMS, EXPLODED
VIEWS AND IN THE PARTS LIST ARE CRITICAL FOR
SAFE OPERATION. REPLACE THESE COMPONENTS
WITH SONY PARTS WHOSE PART NUMBERS AP-
PEAR AS SHOWN IN THIS MANUAL OR IN SUPPLE-
MENTS PUBLISHED BY SONY. CIRCUIT ADJUST-
MENTS THAT ARE CRITICAL FOR SAFE OPERATION
ARE IDENTIFIED IN THIS MANUAL. FOLLOW THESE
PROCEDURES WHENEVER CRITICAL COMPONENTS
ARE REPLACED OR IMPROPER OPERATION IS SUS-
PECTED.
AVERTISSEMENT!!
NE JAMAIS METTRE SOUS TENSION QUAND LA
BOBINE DE DEMAGNETISATION EST ENLEVÉE.
ATTENTION AUX COMPOSANTS RELATIFS À LA
SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE TRAME ET
UNE MARQUE
¡ SONT CRITIQUES POUR LA SÉCURITÉ.
NE LES REMPLACER QUE PAR UNE PIÈCE PORTANT LE
NUMÉRO SPECIFIÉ. LES RÉGLAGES DE CIRCUIT DONT
L'IMPORTANCE EST CRITIQUE POUR LA SÉCURITÉ DU
FONCTIONNEMENT SONT IDENTIFIÉS DANS LE
PRÉSENT MANUEL. SUIVRE CES PROCÉDURES LORS
DE CHAQUE REMPLACEMENT DE COMPOSANTS CRI-
TIQUES, OU LORSQU'UN MAUVAIS FONCTIONNE-MENT
EST SUSPECTÉ.
After correcting the original service problem, perform the fol-
lowing safety checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly-sol-
dered connections. Check the entire board surface for solder
splashes and bridges.
2. Check the interboard wiring to ensure that no wires are
"pinched" or contact high-wattage resistors.
3. Check that all control knobs, shields, covers, ground straps,
and mounting hardware have been replaced. Be absolutely
certain that you have replaced all the insulators.
4. Look for unauthorized replacement parts, particularly tran-
sistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.
5. Look for parts which, though functioning, show obvious
signs of deterioration. Point them out to the customer and
recommend their replacement.
6. Check the line cords for cracks and abrasion. Recommend
the replacement of any such line cord to the customer.
7. Check the B+ and HV to see if they are specified values.
Make sure your instruments are accurate; be suspicious of
your HV meter if sets always have low HV.
8. Check the antenna terminals, metal trim, "metallized"
knobs, screws, and all other exposed metal parts for AC
Leakage. Check leakage as described below.
Fig. A. Using an AC voltmeter to check AC leakage.
SAFETY CHECK-OUT
(US Model only)
1.5 k
0.15
µF
AC
Voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
CAUTION ON DAS (ECS) CONNECTOR
· The connector for DAS (ECS) adjustment is provided inside
the cover shown below. Be careful with an electrical shock
when connecting the connector with the power supplied. Also,
return the removed cover to the home position.
Rear side
CPD-520GS/520GST/520GST9
3
POWER SAVING FUNCTION
Failre
+B failure
Horizontal / Vertical Deflection
failure, Thermal protector
ABL protector
HV failure
Aging / Self Test
Power LED
Orange
Off
(0.5 sec)
(0.5 sec)
Orange
Off
(1.5 sec)
(0.5 sec)
Orange
Off
(0.5 sec)
(1.5 sec)
Orange
Off
Orange
Off
(0.25 sec)
(0.25 sec)
(0.25 sec)
(1.25 sec)
Orange
Off
Green
Off
(0.5 sec)
(0.5 sec)
(0.5 sec)
(0.5 sec)
Aging Mode (Video Aging) : During Power Save, press "MENU" key for longer than 2 second.
Self Test (OSD Color Bar)
: During Power Save, press "CONTRAST" + (
/) key for longer than 2 second.
Reliability Check Mode
: During Power Save, press "CONTRAST" (
?) key for longer than 2 second.
DIAGNOSIS
This monitor meets the power-saving guidelines set by VESA
and ENERGY STAR, as well as the more stringent NUTEK .
If the monitor is connected to a computer or video graphics
board that is VESA DPMS (Display Power Management Signal-
ing) compliant, the monitor will automatically reduce power
consumption in three stages as shown below.
You can set the delay time before the monitor enters the power
saving mode using the OSD. Set the time according to "Setting
the power saving delay time" on page 1-7.
1
2
3
4
5
u
indicator
Green
Green and orange
alternate
Green and orange
alternate
Orange
Off
Power consumption
mode
Normal operation
Standby (1st mode)
Suspend (2nd mode)
Active-off (3rd mode)
Power-off
Screen
active
blank
blank
blank
--
Horizontal
sync signal
present
absent
present
absent
--
Vertical
sync signal
present
present
absent
absent
--
Note
If no video signal is input to the monitor, the "NO INPUT SIG-
NAL" message (page 1-9) appears. After the delay time has
passed, the power saving function automatically puts the moni-
tor into the active-off mode and the indicator lights up orange.
Once the horizontal and vertical sync signals are detected, the
monitor automatically resumes its normal operation mode.
Power consumption
160 W
100 W
15 W
5 W
0 W
Recovery time
--
Approx. 3 sec.
Approx. 3 sec.
Approx. 10 sec.
--
CPD-520GS/520GST/520GST9
4
MODE
TEST MODE
MODE AT PRODUCTION
MODE 1
MODE 2
RESOLUTION
738 X 414
1600 X 1200
CLOCK
28.322 MHZ
202.500 MHZ
-- HORIZONTAL --
H-FREQ
31.469 kHz
93.750 kHz
usec
usec
H. TOTAL
31.777
10.667
H. BLK
5.720
2.765
H. FP
0.318
0.316
H. SYNC
3.813
0.948
H. BP
1.589
1.501
H. ACTIV
26.057
7.901
-- VERTICAL --
V. FREQ(HZ)
70.087Hz
75.000 Hz
lines
lines
V. TOTAL
449
1250
V. BLK
35
50
V. FP
5
1
V. SYNC
2
3
V. BP
28
46
V. ACTIV
414
1200
-- SYNC --
INT(G)
NO
NO
EXT(H/V)/POLARITY
YES N/P
YES P/P
EXT(CS) /POLARITY
NO
NO
INT/NON INT
NON INT
NON INT
TIMING SPECIFICATION
98.05.12 VER.