Philips 104S CM23 GSIII Schematic

14” Auto scan Colour Monitor

Chassis

Service Service

Service

DDC/Power saving/TCO

User-friendliness Control

Contents Page

104S CM23 GSIII

104S11/00(COCA)

Horizontal frequencies

30-54kHz

TABLE OF CONTENTS

Description Page

Important Safety Notice ------------------------------- 2 Technical Data ------------------------------------------ 3 Installation and Control-------------------------------- 4 Warning and Notes ------------------------------------ 5 Mechanical Instructions ------------------------------ 6 Wiring Diagram----------------------------------------- 7 Electrical Instructions -----------------------------8 ~15 DDC Instructions------DDC Data---------Safety test requirements (Hipot & Ground)--------22

Block Diagram &C.B.A(A)-----------------------------23 Video Panel (A) Schematic Diagram ---------------24

ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.

--------------------------- 16~19

--------------------------------- 20~21

REFER TO BACK COVER FOR IMPORTANT SAFETY GUIDELINES

SAFETY NOTICE

Description Page

Main Panel (B1) Schematic Diagram---------------25 U-control Schematic Diagram & Waveforms for Diagram B2----------------------------------------------26 Main Panel C.B.A. ------- ------------------------------27 Power supply Schematic Diagram & Waveforms

for Diagram C ------------------------------------------28 Repair Tips ----------------------------------------------29 Exploded View ----------------------------------------- 30 Recommanded parts List ---------------------------- 31 Spare parts list--------------------------------------32~38 Repair flow chart----------------------------------- 39~46 General product specification------------------- 47~71

CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING.

Published by BCU Monitors Printed in Taiwan Copyright reserved Subject to modification MAY 26 2000

3138 106 10099

104S CM23 GSIII

IMPORTANT SAFETY NOTICE

Go to cover page

Proper service and repair is important to the safe, reliable operation of all Philips Consumer Electronics Company** Equipment. The service procedures recommended by

Philips and described in this service manual are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose. The special tools should be used when and as recommended.

It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in order to minimize the risk of personal injury to service personnel. The possibility exists that improper

service methods may damage the equipment. It also is important to understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE. Philips could not

possibly know, evaluate and advise the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way. Consequently, Philips has not undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not recommended by Philips must first satisfy himself thoroughly that neither his safety nor the safe operation of the equipment will be jeopardized by the service method selected.

TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL

MANUFACTURER'S REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART

NUMBERS IN THE PARTS LIST SECTION OF THIS SERVICE MANUAL.

* * Hereafter throughout this manual, Philips Consumer

Electronics Company will be referred to as Philips.

WARNING

Critical components having special safety characteristics are identified with a by the Ref. No. in the parts list and enclosed within a broken line*

(where several critical components are grouped in one area) along with the safety symbol on the schematics or exploded views.

Use of substitute replacement parts which do not have the same specified safety characteristics may create shock, fire, or other hazards.

Under no circumstances should the original design be modified or altered without written permission from Philips. Philips assumes no liability, express or implied, arising out of any unauthorized modification of design.

Servicer assumes all liability.

* Broken Line

Technical Data

Technical Specification*

CRT

Size and deflection :14 inch/35.5cm,90 defection angle Dot pitch/Grille pitch : 0.28mm Horizontal pitch : 0.24mm

Tube type : Shadow mask, anti-glare, anti-static,

anti-reflection, light transmission 57%

Phosphor : P22

White Color Temperature

Chromaticity CIE coordinates:

at 9300 k x = 0.281 y = 0.311

104S CM23 GSIII

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Recommended display area : 9.8" x 7.4" / 250 x 188 mm

Maximum display area :10.8" x 7.9" / 274 x 201 mm

Scanning

Horizontal scanning : 30 - 54 KHz Vertical : 50 - 120 Hz

scanning

Video

Video dot rate : 65 Mhz Input impedance

-Video : 75 Ohm

- Sync : 2.2 kOhm Input signal levels : 0.7Vpp

Separate sync

Sync input signal

: Composite sync

Sync polarities : Positive and negative

Pin assignment :

The 15-pin D-sub connector(male) of the signal cable

(IBM systems) :

1 6

Pin No.

3 4

5 6

Assignment

Red video input Green video input

Blue video input

Identification output Connected to pin 10

Ground

Red video ground

Green video ground

Blue video ground

5 10 15

Pin No.

Assignment

No pin Logic ground

Identification output Connected to pin 10

13 14

Serial data line(SDA)

H.Sync V.Sync(VCLK for DDC)

Data clock line(SCL)

Physical Specifications

Dimensions : 347x367x360mm(including base)

347x367x310mm(excluding base)

weight : 9.5 Kg

Power supply : 90 - 264 VAC, 50/60HZ Power consumption : <= 72 Watt

Operating condition Temperature : 0 C - 40 C

Relative Humidety : 20%-80%(W/O condensation)

Storage condition Temperature : - 25 C - 65 C

Relative Humidity : 20%-90%(W/O condensation)

Automatic Power Saving

If you have VESA's DPMS compliance display card or software installed in your PC,the monitor can automaticlly reduce its power consumption when not in use. And if an input from a keyboard, mouse or other input devices is detected, the monitor will automatically "wake up". The following table shows the power consumption and signalling of this automatic power saving features :

Power Management Definition

VESA's mode

Stand-by

Suspend

OFF

VIDEO

Active

Blanked

H-SYNC

Yes

V-SYNC

Yes

POWER USED

<75W

<15W

<8W

POWER SAVING( % )

80 %

94 %

LED COLOR

Green

Yellow

Amber

For Tne monitor is pre-set with 6 modes for optimal display size and centering as indicated in the following table:

Mode Resolution

VGA 640 X 400 31.5 70 Non-interlaced

VGA 640 X 480 31.5 60 Non-interlaced

VESA / 75 640 X 480 37.5 75 Non-interlaced

VESA / 75 800 X 600 46.9 75 Non-interlaced

VESA / 85 800 X 600 53.7 85 Non-interlaced

VESA 1024 X 768 48.3 60 Non-interlaced

(dots x lines)

Horizontal

Freq. (KHz)

Vertical

Freq. (KHz)

Remark

This monitor is Energy Star compliant .As an ENERGY STAR Partner, PHILIPS has determined that this product meets the ENERGY STAR guidelines for energy efficiency.

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