.... • • • , • ~ • ,• • -- - • • • (\ - -• MODEL 5872 - MATTEL ELECTRONICS 5150 Rosecrans Avenue Hawthorne.
• \ • • ,_. . TABLE OF CONTENTS -. . '. .' 1. SPECiFiCATIONS·,; ......................................... Page 1 • • .. 2. OPERATING INSTRUCTIONS ................................ Page 2 3. SYSTEM DESCRIPTION AND OPERATION ................... Page 5 • • 4. SYSTEM TESTING. . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . .. Page 9 . . ~ ..' .. 5. DISASSEMBLY PROCEDURE ................................ Page 9 6. PRELIMINARY CHECKLIST ............................
• • ! • SPECIFICATIONS • MICROPROCESSOR (CPU) - General Instrument CP-1610 16-bit processor. MEMORY - 7K internal ROM, RAM, and 1/ 0 structures, remaining 64K address space available for external programs. CONTROLS - Two removable hand controllers: 12-bulton numeric keypad, four action buttons, 16-position directional movement disc. SOUND - Programmable sound generator (PSG) capable of producing three simultaneous sound patterns.
• OPERATING INSTRUCTIONS A. 2. Connect the RF cable from the RF f"""'\ output jack on the Master Component. ~ to the jack marked GAME on the ~ antenna switch box. Place switch box to the GAME position. Connection to the color television receiver • 1. Connect the tWin lead from the antenna switch box to the VHF antenna input of the television receiver.
• • • keypad) is UP on the screen, etc. For further instructions, refer to the individual game cartridges. B. Power Connection 1. Plug the transformer unit into a 120 Volt 60 Hz wall outlet. 2. Insert the other end of the power cord into the rear-panel power socket. To operate the directional disc, depress the outer edge of the disc with one finger and rotate it around the edge to change the direction on the object you are moving. You have the ability to move the object in any desired direction. C.
o TRANSFORMER UNIT (Plugs into AC Wall Outlet) COLOR TELEVISION • I POWER PLUG (Plug into rear 01 Master Component) • TV CONNECTION TO SWITCH BOX j.
_ - - - - - - -- - - - - - -- - - - - - - - - - - - - - - - - - - .-, ..-.. .. ~ " • 1. Always use lowest possible brightness and contrast control settings during game operation. • 3. FollOw your projection TV owner's manual for proper viewing conditions for programming. 2. Games containing stationary white or light colored objects should not be played for extended periods of time.
---------------------------_..._ • ... .. . regulator senses the current drain and varies the duty cycle (on time of the square wave compared to the total period) of the square wave. This assures a constant voltage during varying levels of power consumption. C. LOGIC BOARD ASSEMBLY. The Logic Board Assembly consists essentially of . 12 integrated circuits and their associated components, a channel select switch, and an RF modulator, all of which are mounted on the same printed circuit board.
"C) • • SCRATCH PAD RAMS 21UL rI I I I I - - - -- - -, I I I RO-950t ROM I PROGRAM ROM RO-3-9506 I I I I I CPU CP-1610 ~ .... I SYSTEM RAM RA-3-9600 I I I I I I I I I I .:.., RO-9504 ROM I I I I L .... L I • GAME CARTRIDGE ______ I I I I I ...J "1 ..s.. SOUND GENERATOR AY-3-8914 lINEAR/ANALDG/ OIGITAL LAO 3" .....
- - - - - - - - - - - - - - - - - - - - - --_._-_._--_. __ ..., .., • in the CPU-controlled mode, the graphics control bus links the graphics memory to the CPU main memory. The third set of controls is used to specify address, read and write sequences to/from the STIC whIm the system is in the CPU-controlled mode. Video output codes from the STIC are applied to the color oscillator/master clock generator for processing. ROM contains system operating data.
• • • SYSTEM TESTING • Master Component and depress the reset switch. Check for mistakes in lettering on title picture, jumbled playfield or unwanted characters . DIAGNOSTIC TEST ROUTINE. The diagnostic test routine should be performed before disassembly of the Master Component. Full instructions covering the operation and analysis of results are included with the Diagnostic Test Cartridge. , c. If any problems occur.
- - - - - - - - - -- - - - - - - - - - - - - - -- -_ .... . _ - - - . • PRELIMINARY CHECKLIST Before you refer to the TROUBLESHOOTING Section which follows, look at this list of possible quick solutions. Then, If any problem persists, you should be able to find it in TROUBLESHOOTING. • :' Press ON/RESET button.
• • • TROUBLESHOOTING Fro m a design aspect. the Intellivision II Master Component is a complex configuration of electronic hardware. However. from a repair aspect. the Master Component may be divided int o small building blocks, each part modifying or adding to the signals in its own special way . Whenever possible, the repair of the Master Component is simplified by looking at symptoms that occur when a component fails .
TROUBLESHOOTING PROCEDURE: Run the Diagnostic Test Routine." a fault is discovered. then the FAILURE display will indicate the ICs most likely to have failed. Replace these ICs. " this does not solve the problem. or if you are unable to run the Diagnostic Test Routine. follow this Troubleshooting Guide. AC Adaplor Power Supply Measure 16-20 VAC between cenler aM Duler sleeve 01 AC Adaptor. Unplug concentrIC plug 01 AC Adaplor from fear of Master Component.
----------------------------------- ------------------- . _ - - - - - • • • If the problem is not found and corrected with the procedures on the previous page, then follow this Symptom/Remedy Guide: SYMPTOM SUSPECT Snow on TV (with or without diagnostic test pattern visible.) • REMEDY Unit is not turning on. Review voltage check in Trouble· shooting Guide. Fuse is blown. Check continuity of fuse on Logic Board. Replace if open.
,i• • !, • , • i SYMPTOM Grey-white screen WITH flls h ocC llrr in, on tM TV scre.n when rel it switch SUSPECT Defective IC (co nti nue d I. , is depreald. (co nti nue d) REMEDY If Test Ro uti ne will no t run (using I kno wn -go od tes t can rid ge) Ind III voltages are OK , rep llc e tM ICs in the following ord er: Ul , U2, U4, U3, or U6. , Incorrect or missing bus control Incorrect, ex tr., or missing video patterns or characters. signals, Guide on che cki ng bus con tro l signlls.
• • • SYMPTOM No sound (picture and video OK). (continued) SUSPECT • REMEDY Sound IC (UG), U3, or U9 is defective. Scope for audio signal at pin 4 of UG during Audio Test on Test Cartridge. If no Audio, replace UG, U9, then U3. If signal at pin 4 of U6 OK, but no signal at pin 9 of U9, replace US. A F Modulator is defective. First check the audio input lead of the modulator for signal. If signal is pres ent, connect a known-good modulator in parallel w ith the modulator.
• • • 'SYMPTOM SUSPECT REMEDY -I~------------------------------1-----------------The picture has the wrong The TV control. are .et wrong. • Check all TV controls . colors or no colo rs_ The crystal X 1 is set to the wrong frequency . Check the frequency at pin 15 of U I O. It should be 3.579545 MHz +1- 100Hz . Adjust the frequency by adjust ing var iable capac itor (C 17) . STIC (U4) or Color (UIO) IC, are Replace U4 . then UIO. defective.
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• • • .. TP7 TP5 . TP3 ~ TP6 Figure 6 - TP1 TP3 TP4 TP5 TP6 TP7 TP8 TP4 TP2 TP1 Power Supply Board - TP 2 ...... . ... . .. ,., ....... . ..... .. ........... " _.... 16-20VAC ............ . .............. . .... . . . .......... Ground Connection · ............... . ................. . ......... .. -2.10 to -2.40 VDC · ..... .. .... . ... . ... .. .... . . ..... . . ...... . .. .. +5.45 to +5.95 VDC .............................................. +11.5 to +12.5 VDC · ...........................
- - - -- - - - -- - -- - -- ---_ . • .. • ADJUSTMENTS MASTER CLOCK ADJUSTMENT. CAUTION: Use care not to damage the core. 1. Connect a frequency counter with a high input impedance (lOOK ohms or higher) to pin 15 of U10 and ground . 2. Adjust C 17 (variable capacitor) so the frequency counter indicates 3.579545 MHz ± 100Hz. 4. Set Channel Select switch to channel 4. Verify the frequenc y counter reads 67 .65MHz ± 250kHz . SOUND BUZZ ADJUSTMENT. 1. Adjust volume on TV set for a normal level.
- • • PARTS LIST • REF. DESIGNATION DESCRIPTION PART NUMBER CD Lower Housi ng. . . . . . . . . . . . . . . . • . . . . . . . . . . . . . • . . . . . . . 5872 ·21 09 (3) Rubber Foot ... . . . . . . . . . . . . . . . . . ...... . . . . . . . . . . . . . 2609-9489 Label - FCC & Serial No. . .... . ... . .... .. ..• • .. •• ...... 5872.0350 o Logic Board with parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N/A R1, R16·R31 Resistor, 5.6K ohm 5% 1/4W ., .. .. . . . . .
- - -- - - -- - - - - - - - -- - - _........ .: ,. • 5 8 11 I \ I ,I J 4 , • • / 10 • , 3 • • i • ,, •• .. ~. 14 2 Figure 7 - EXPLODED VIEW OF MASTER COMPONENT -22- .
• • • REF. DESIGNATION DESCRIPTION Xl Crystal. 7.15909MHz +/- 0 .003% ..... . .•...• . . . .. . " ... ,. 0089'()158 Hl RF Modulator .. " .. ' , ...... , .... • •. , . .. , ... , . . ' , , , . 2609-4689 51 Domed Switch. Reset " . ' .... , ..• . ..• , ...•... ', .... '" S2 Switch. Channel Select , . , " , . . . . . . . . . . • . . . . . ... . .. " .. 5872·9559 PART NUMBER 0099·1140 IC Socket. 40·pin DIP (for Ul. U2 and U4) , ..... . . . .• . . . •.... 0099·1510 Connector.
DISASSEMBLY NOTES: • • • • • -24-
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