Gemini Sound CDX-802 Service manual

SERVICE MANUAL

CDX-802

Professional CD Player

CONTENT’S:

Connections & Operations:.......................................................Page 2-4

Specifications:..............................................................................Page 4

Parts Lists:.................................................................................Page 5-7

PCBs:........................................................................................Page 8-11

Schematics:..........................................................................Page 12-19

Gemini Sound Products Corp.

120 Clover Place P.O. Box 6928

Edison, NJ 08818-6928

732-738-9003 (Phone) • 732-738-9006 (Fax)

Page 1

123

CDX-802

14 16

DIGIT AL OUTPUT 2

CONNECT TO

REMOTE CONTROL 2

OUTPUT 2

230V 50HZ

115V 60H

AC IN

FUSE 250V, FO. 5AL

FUSE 250V, F1 AL

(2)

CONNECT TO

REMOTE CONTROL 1

DIGIT AL OUTPUT 1

OUTPUT 1

INTRODUCTION:

Congratulations on your purchase of a Gemini CDX-802 CD Player. Your state-of-the-art professional CD Player is backed by a three year warranty that excludes lasers, which are covered by a separate one year warranty. Prior to use of this unit, we suggest you carefully read the following intructions. Y our Gemini CDX-802 CD Player comes equipped with ADCS (Automatic Disc Calibration System), a unique state-of-the-art feature. CDs are produced by a variety of manufacturers and recorded by many different professional companies as well as the do-it-yourselfers at home. Therefore, all CDs do not play the same. The ADCS automatically adjusts the laser in your CDX-802 CD Player for each individual CD you insert into the tray, to give you the best possible performance for every CD you play regardless of how it was manufactured or how it was recorded. With this exclusive system you always get consistent and reliable performance as well as exceptional sound quality every time you play a CD... any CD.

CAUTIONS:

1. Do not use this CD player at temperatures below 41°F/5°C or higher than 95°F/35°C.

2. The apparatus should not be exposed to dripping or splashing, and no objects filled with liquids such as vases should be placed on the apparatus.

3. Place the unit in a clean and dry location.

4. Do not place the unit in an unstable location.

5. When disconnecting the power cord from an AC outlet, always grasp it by the plug. Never pull the power cord.

6. To prevent electric shock, do not remove the cover or the bottom screws. There are no user serviceable parts inside. Please refer servicing to a qualified technician.

7. Do not use chemical solvents to clean the unit.

8. Keep the laser pickup clean by keeping the tray closed.

9. Keep this manual in a safe place for future reference.

SAFETY CERTIFICATIONS:

Laser Diode Properties Material: Ga - Al - As Wavelength: 755 - 815 nm (25° C) Laser Output: Continuous Wave, max. 5mWCAUTIONS

LINE VOLTAGE SELECTION:

The Gemini CDX-802 CD Player is a dual voltage unit operating at 115 or 230 volts. Be sure to set the proper voltage:

1. Place the head of a screwdriver in the center of the VOLTAGE

SELECTOR (1) switch found on the rear panel.

2. Slide the switch to 115 or 230 volts.

3. Do not force or twist the switch. Excessive force may cause damage.

If the switch does not move smoothly, contact a qualified technician.

CONNECTIONS:

1. Plug one end of a set of RCA connectors into the two LINE OUTPUT

JACKS (2) on the back of your CD unit.

2. Plug the other end of the RCA connectors into any of the available

line level input jacks on your mixer. If you are playing the CDX-802 through a receiver, you can plug the RCA connectors into the CD or

AUX INPUT JACKS located on the receiver. If there are no CD or AUX INPUTS, use any line level (not phono) input.

FUNCTIONS:

POWER SWITCH:

switch is properly set, plug the unit in and press the POWER (3) button. The unit will turn on. Pushing POWER (3) a second time turns the unit off.

DISC TRAY:

unloading and playback. Pressing OPEN/CLOSE (4) opens or closes the tray. The DISC TRAY (5) holds both 12 cm and 8 cm CDs and automatically closes after remaining open for three minutes.

NOTE: TRAY WONT OPEN WHEN THE CDX-802 IS IN THE PLAY MODE. OPEN/CLOSE:

DISC TRAY (5).

After making sure the VOLTAGE SELECTOR (1)

The DISC TRAY (5) is where the CD is held during loading,

Press OPEN/CLOSE (4) to load or remove a CD from the

DISPLAY:

PLAYBACK DISPLAY:

PLAY/PAUSE :

TRACK SKIP

SEARCH JOG WHEEL:

SEARCH DIAL:

STOP :

TIME:

FLY CUE:

CUE:

LOOP:

BOP/RELOOP:

SINGLE-AUTO CUE/CONTINUOUS:

PITCH:

PITCH BEND :

(3)

The DISPLAY (6) shows total tracks; track number; pitch value; single-auto cue; continue (continuous play); and three different time displays: track time elapsed, track time remaining and total time remaining on disc. Time is measured in minutes, seconds and frames.

play time remaining for each track. The display flashes slowly when the track has 15 seconds remaining and pulses rapidly when play time is down to five seconds.

to change from PLAY to PAUSE or PAUSE to PLAY.

the track to play.

functions. Use the SEARCH in PAUSE mode. Use the SEARCH JOG WHEEL (10) to bend the pitch for precise synchronization in PLAY mode.

direction and speed of your CD. Turning the dial in a clockwise direction scans forward while a counter-clockwise turn scans the track in reverse. Scan speed increases as the dial is turned.

The STOP (12) button ends CD play.

The TIME (13) button switches the time display between the

three available choices listed under DISPLAY (6).

The FLY CUE (14) function lets you set cues “on the fly” with the press of a button. Press FLY CUE (14) when the disc reaches the musical location you wish to make your cue or start point. The cue point is now programmed. Press CUE (15) to return to the cue point. Press PLA Y/PAUSE (16) and the unit starts from the pre-programmed spot.

With the unit in the PLAY mode (PLAY/PAUSE LED is green) and after the cue point has been programmed, pressing CUE (15) will cause the CD player to enter the PAUSE mode (green PLAY/PAUSE LED blinks) at the programmed cue point (the CUE LED glows yellow). Holding down the CUE (15) button changes the function to PREVIEW and starts the CD from the programmed cue point. Releasing the CUE button (15) will return the CD laser to the preset cue point.

After a cue point is memorized, pressing the B/EXIT (16) button in PLAY mode, (the CUE LED blinks yellow), repeats the section between the cue point and the point where the B/EXIT (16) button was pressed. Press the B/EXIT (16) button again or pause play to exit the repeating play.

return to a previously saved loop from normal play, press the BOP/ RELOOP (17) button after saving the loop. To return to and instantly play from a previously saved cue point, press the BOP/RELOOP (17) button after setting the cue point (if you do not have a loop saved).

CONTINUOUS (18) activates the AUTO CUE FUNCTION. The AUTO CUE causes the CD to pause at the recorded beginning of the next track

and allows you to start play into the next song with no space in between songs. Pressing SINGLE-AUTO CUE/CONTINUOUS (18) a second time will activate the CONTINUOUS function. This causes the CD to repeat play continuously until SINGLE-AUTO CUE/CONTINUOUS (18) is pressed a third time to deactivate the CONTINUOUS function.

Pushing the PITCH button (19) activates the PITCH section of the unit (PITCH LED glows red). The pitch of the CD will change according to the position of the PITCH SLIDE (20).

automatically raise the pitch up to +4% or lower the pitch down to

-4% from the existing setting. Releasing the buttons returns pitch to the original setting. Use this function to match the pitch bend when mixing from one song to another.

The PLAYBACK DISPLAY (7) displays the

Each press of PLAY/PAUSE (8) causes the operation

The TRACK SKIP (9) buttons let you select

The SEARCH JOG WHEEL (10) has two

JOG WHEEL (10) to make fine adjustments

Use the SEARCH DIAL (11) to select the scanning

The BOP/RELOOP (17) button has two functions. To

Pressing SINGLE-AUTO CUE/

Pushing the PITCH BEND (21) buttons will

4%, 8% and 16%:

percent the pitch control slide will have. The 4% button will assign +/4% to the PITCH CONTROL SLIDE (20). The 8% button will assign +/8% to the PITCH CONTROL SLIDE (20). The 16% button will assign +/16% to the PITCH CONTROL SLIDE (20). The PITCH (19) must be ON for the 4%, 8% and 16% (22) buttons to work.

INSERT:

Set a cue point (using the CUE (15), FLY CUE (14) or SEARCH JOG WHEEL (10). From this cue point you will be able to sample up to 10 seconds of a musical phrase or sound. When you push and hold the INSERT (23) button you will be able to insert that phrase or sound at

any spot in the music that is currently playing, replacing what is playing in that spot with up to 10 seconds of the piece you have sampled. When you release the INSERT (23) button the music will continue uninterrupted.

Use the 4%, 8% and 16% (22) buttons to assign the

ROBO START INSTRUCTIONS:

IN SINGLE-AUTO CUE MODE:

Use ROBO ST ART (25) in SINGLE-AUTO CUE MODE to alternate play between the CDX-802’s two CD players (one track from one side, then one from the other). In SINGLE-AUTO CUE MODE play starts immediately with no blank or “dead” space. ROBO START (25) causes one side of the CD player to play when the other side is paused.

1. Engage SINGLE-AUTO CUE MODE with the SINGLE-AUTO CUE/ CONTINUOUS (18) button .

2. Press the ROBO START (25) button to activate ROBO START (25). Play will alternate between the two CD players. At the end of a track, the playing side pauses and the other CD deck plays a track. At the end of this track, the playing side pauses and the first CD deck resumes play.

NOTE: YOU CAN ONLY USE YOUR “SAMPLE” WITH YOUR CURRENT

CD. ONCE YOU OPEN THE DISC TRAY TO CHANGE CDS, YOUR “SAMPLE” WILL BE AUTOMATICALLY DELETED.

DIGITAL OUTPUT JACK:

DRIVE, or other such items which accept digital signals to the BNC (24) output connector on the rear panel of your CDX-802 allows you

to record a digital signal from CD.

Connecting any type of DAT, MD, HARD

OPERATING INSTRUCTIONS:

1. Make sure that the VOLTAGE SELECTOR SWITCH (1), found on the rear panel, is set for the proper voltage. Plug the unit in and press the POWER SWITCH (2). The unit is ON. Pushing POWER (1) a second time turns the unit OFF.

2. Press OPEN/CLOSE (4) and place a CD in the DISC TRAY (5). Press OPEN/CLOSE (4) again. The tray will close.

3. Push TRACK SKIP (9) to select the track you wish to play.

4. Press PLAY/PAUSE (8) and the unit will instantly play.

FLY CUE & CUE INSTRUCTIONS:

PAUSE (8) and the unit instantly starts from this pre-programmed spot.

AND/OR:

1. To pre-program a cue point (the spot on a CD at which you want play to start) select the proper track and push PLAY/PAUSE (8) so the unit enters the PLAY mode (PLAY/PAUSE LED glows green). When the CD reaches the approximate musical spot you wish to make your cue, push PLA Y/P AUSE (8) so the unit enters the PAUSE mode (PLAY/PAUSE LED blinks). Move the SEARCH JOG WHEEL (10) forward or in reverse until the precise spot at which you want CD play to begin is located. Push PLAY/PAUSE (8). The cue point is now programmed. Press CUE (15) to return to this pre-programmed cue point at any time. Push PLAY/PAUSE (8) and the unit will instantly play from the pre-selected spot.

2. To fine tune your pre-programmed cue point, push PLAY/PAUSE (8) so the unit enters the PLAY mode. Push the CUE button (15) and the CD will return to the cue point you programmed in step #1 and begin play from that point. If you decide this cue or starting point is okay, leave the unit alone until you are ready to play.

3. If, however, the selected spot is not exactly where you want it, push the CUE (15) button while the CD is playing and the disc will return to the pre-programmed cue point. Locate the which you want play to start by turning the SEARCH JOG WHEEL (10). Push PLAY/PAUSE (8) to pre-program this new cue point. Press the

CUE (15) button to pause play at the new cue point. Push PLAY/ PAUSE (8) at any time and the unit will play from the pre-selected spot.

exact

spot on the CD at

IN CONTINUOUS MODE OR DURING NORMAL PLA Y :

If you use the ROBO START (25) function without SINGLE-AUTO CUE MODE (in CONTINUOUS MODE or during normal play), CD deck play does

not alternate automatically. The PLAY/PAUSE (8) button must be pressed on the playing deck for the second deck to play.

1. During normal play, set a cue point on the second CD deck.

2. Press the ROBO START (25) button to activate ROBO START.

3. Press PLAY/PAUSE (8) button on the playing side to start play from the cue point on the other CD deck.

NOTE: PAUSING PLAY IN THE MIDDLE OF A TRACK CAUSES THE

OTHER CD DECK TO PLAY. WHEN THE NEW TRACK ENDS, PLAY RESUMES ON THE FIRST CD PLAYER FROM THE POINT AT WHICH IT WAS PAUSED.

TROUBLESHOOTING:

• If a disk will not play, check to see that it was loaded correctly (label side up)

and that the CD unit is on a flat, level, stable surface. Check disc for dirt, scratches, spills, etc.

• If the disc spins but there is no sound, check the cable connections. If they are okay, check your amplifier or receiver.

• If the CD skips, check it for dirt, oil or scratches. Do not assume that the CD player or laser is defective. Many CDs are recorded “out of spec” and skip on most or all CD players. Before sending the unit to an authorized Gemini service technician, insert a disc that plays properly in another unit.

SPECIFICATIONS:

GENERAL:

Type................................................................................Compact Disc Player

Disc Type.........................................Standard Compact discs (12 cm & 8 cm)

Time Display..............................Track Elapsed, Track Remain, or Total remain

Instant Start...................................................................Within 0.015 seconds

Track Selection.........................................................................1 to 99 Tracks

Installation..........................................................................................19" each

Dimensions.............................................................................19” x 3.5” x 10”

Weight Per Unit.....................................................................................9.5 lbs.

AUDIO SECTION:

Quantization...........................................16 Bit Linear/Channel, 3 Beam Laser

Oversampling Rate..............................................................................8 Times

Sampling Frequency...........................................................................44.1 kHz

Frequency Response.............................................................20 Hz to 20 kHz

Digital Output.........................................................................................IEC958

Total Harmonic Distortion.....................................................Less Than 0.05%

Signal to Noise Ratio.............................................................................100 dB

Dynamic Range.......................................................................................96 dB

Channel Separation...................................................................90 dB (1 KHz)

Output Level...........................................................................1.9 Volts R.M.S.

Power Supply.............................................................AC 115/230V, 60/50 Hz

Specifications and design are subject to change without notice for purpose of improvement.

NOTE: IF YOU PRESS OPEN/CLOSE (4) WHEN A DISC IS BEING READ AFTER LOADING, THE

DISC TRAY WILL P AUSE, FOR A MOMENT BEFORE OPENING.

(4)

ITEM

PART NUMBER 1 2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 48 49 50 51

012-054 031-040 032-128 021-604 041-479 022-860 041-480 003-737 002-573 003-743 002-576 003-739 003-711 047-494 148-316 049-215 153-213 196-165 255-238 257-020 156-089 190-062 099-167 099-168 099-169 099-014 099-214 099-232 099-233 099-234 160-008 160-009 160-044 160-052

121-002A

111-046A

110-172A

101-043 110-078

111-030

111-044A

111-057 131-081 170-396 262-393 262-291 262-394 262-395 094-204 003-605

PART NUMBER

092-083 092-083 079-027 059-236 074-074 074-186 074-085

PART NUMBER

092-147 074-074 092-148

CDX-802 (MAIN )

Q’TY

ENGLISH NAME

PANEL CONTROL

TOP COVER

BOTTOM COVER

SUB PANEL

HEAT SINK

MOUNTING BRACKET

HEAT SINK (C)

DESK DOOR

KNOB PUSH (DA)

PUSE KEY INLAY (DA)

KNOB PUSH KEY ASS’Y (C)

PR OTECTOR INLAY

HOLDER LED 3Æ (7mm)

PCB SUPPORT

MANE PLATE (SMALL)

PAD FOOT

POLYFORM

SERIAL NO:LABEL

GIFT BOX

OWNER’S MANUAL

WARRANTY CARD

SILICON GEL

A LABEL

J LABEL

V LABEL

LABEL -MADE IN TAIWAN

LABEL- MADE IN CHINA

LABEL- GREEN

LAABEL-RED

LABEL-YELLOW

PE BAG 85×100mm

PE BAG 230×300mm

PE BAG 160×250mm

PE BAG 650x650mm

BAND-HEAD TAPPING SCREW

BAND-HEAD TAPPING SCREW/TWIN SCREW 3×8(AB)

FLAT-HEAD MACHINE SCREW3×8(B)

PAN-HEAD TAPPING SCREW-2 4×6(B)

PAN-HEAD TAPPING SCREW4×6(B)

BAND-HEAD TAPPING SCREW ( “NUT” ) 3×10(AB)

FLAT-HEAD TAPPING SCREW 3×6(Z)

NUT/WASHER 3mm

MASTER CARTON

PRINTED CIRCUIT BOARD CDX802-1

PRINTED CIRCUIT BOARD CD01-4

PRINTED CIRCUIT BOARD CDX802-2

PRINTED CIRCUIT BOARD CDX802-3

16P FLAT CABLE 110mm P=1mm

CABLE TIES CV-100

PCB 802-2

COMMENT

TO AC CORD

TO TRANSF.

1N4002

UH962021

7805

M317

79L05

PCB 802-7

COMMENT

MINI DIN(092-147)

NJM7805

PLUG08(092-148)

FOOTPRINT

0.156"-2

0.156"-2 DIODE10

EMC1 TO-220 TO-220

TO-92

FOOTPRINT

MINI_DIN

TO-220

PARTS LIST:

ITEM

PART NUMBER

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

PART NUMBER

074-182A

092-150A

074-183B

Q’TY

DESIGNATORS

D1, D2,D3, D4, D5, D6

EMC1

IC3

IC1, IC4

IC2

Q’TY

DESIGNATORS 1 1 1

IC4

Page 5

074-104S

092-153A 092-154A 092-151A 092-152A

092-026A 092-050A

012-053 031-041 021-605 021-606 003-427 003-428 002-572 003-141 003-144 002-720 148-316 003-738 003-739 003-711 002-579 002-575 002-576 003-741 159-227 099-252 099-253 153-212 196-165 099-014 099-214 190-062

160-045 110-172A 111-046A 121-002A

111-057 262-396 262-397 262-398 262-286

074-187 058-021 058-022 079-003 079-027 079-003

074-194 074-195 074-196 092-147 074-179 074-184

074-192 161-173

074-181 074-191 076-104 076-137 076-095

CDX-802 CONTROL BOX

Q’TY

ENGLISH NAME

PANEL CONTROL

COVER

TOP ANGLE

BOTTOM ANGLE

PLATE LAMP

LAMP HOLDER

KNOB PUSH (CA)

KNOB ROTARY (A)

KNOB ROTARY (B)

KNOB SLIDE

MANE PLATE (SMALL)

VR INLAY (CA)

PR OTECTOR INLAY

HOLDER LED 3

KNOB PUSH KEY ASS’Y (A)

KNOB PUSH KEY ASS’Y (B)

KNOB PUSH KEY ASS’Y (C)

PUSE KEY INLAY (CA)

VR DUST PROOF CLOTH (CA)

LAMP PAPER

LAMP LABEL

POLYFORM

SERIAL NO:LABEL

LABEL- MADE IN TAIWAN

LABEL- MADE IN CHINA

SILICON GEL

PE BAG 160×650mm

BAND-HEAD TAPPING SCREW/TWIN SCREW3×8(AB)

BAND-HEAD TAPPING SCREW3×6(AB)

BAND-HEAD TAPPING SCREW3×5(AB)

FLAT-HEAD TAPPING SCREW3×6(Z)

PRINTED CIRCUIT BOARD CDX802-5

PRINTED CIRCUIT BOARD CDX802-6

PRINTED CIRCUIT BOARD CDX802-7

PRINTED CIRCUIT BOARD CD01-8

PCB 802-1

COMMENT

BA6392FP

SM5902AF

16.9344MHZ 16MHz

1N4148 1N4002 1N4148

SOCKET16 MM74HCT00M MM74HCT32M

74HCT157M

DTN

NT511740C5J

PCM1717E

P89C557E4

CXD3068Q

161-173 4558LD BA6218

CXA2550N

2SA1317

2SA954

2SC2878

2SC536

083-061 PLUG02 PLUG03 PLUG05 PLUG06 PLUG08 PLUG03 PLUG08

FOOTPRINT

BA6392FP

C505 CRYSTAL CRYSTAL

D10

DIODE10

DIODE6 FPC-16

M14A M14A M16A

MINI_DIN NT511740 PCM1717

QFP80-2 QFP-80P

RCA2A

SIP8 SIP9

SSOP20

TO-92 TO-92 TO-92 TO-92

WP001 X2MM-2 X2MM-3 X2MM-5 X2MM-6 X2MM-8

X3 X8

φφ

φ (7mm)

φφ

Q’TY

DESIGNATORS IC2

IC9, IC8

CR1

CR2

D11,D8, D7, D2

IC15

IC14

IC13, IC12

IC11,IC10

IC6

IC7

IC3

IC5

IC4

IC1

Q3, Q2

SW1

X12

PART NUMBER

079-003 079-003

074-171C

083-116 074-180 080-119 080-118 080-062

074-193 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A

072-112i

001-081 092-044A

092-148

COMMENT

1N4148 1N4148

PIC16C505

JOG/SHUTTLE

LC75854E

GREEN

RED

YELLOW

TC74HC595AFN

16%

4% 8%

B/EXIT

BOP/RELOOP

CUE

FLY_CUE

INSERT

PITCH

PITCH-

PITCH+

PLAY/PAUSE

SGL ACUE

SKIP 10

SKIPFWD

SKIPREV

STOP

TIME 10KB

LCD40 SOCKET02 SOCKET08

PCB 802-5

FOOTPRINT

DIODE10

DIODE6

DIP14

JOG/SHUTTLE

LC75854E

M16A

RS60112

UTN-H241JV

LED LED LED

PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1

X2 X8

QUANTITY

1 3 1 1 1 1 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

DESIGNATORS D4 D1, D2 IC1 SW6 IC2 LED4 LED7, LED6 LED2 IC4 SW3, LED3 SW1 SW2, LED8 SW9 SW10 SW8 SW18 SW23 SW15 SW14 SW17 SW11 SW5 SW16 SW13 SW12 SW7 SW4 VR1 IC3 X1 X2

PART NUMBER

079-003 079-003

074-171C

083-116 074-180 080-119 080-118 080-062

074-193 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A 082-042A

072-112i

001-081 092-044A

092-148

COMMENT

1N4148 1N4148

PIC16C505

JOG/SHUTTLE

LC75854E

GREEN

RED

YELLOW

TC74HC595AFN

16%

4% 8%

B/EXIT

BOP/RELOOP

CUE

FLY_CUE

INSERT

OPEN OPEN_1 OPEN_2

PITCH

PITCH-

PITCH+

PLAY/PAUSE

ROBO

SGL ACUE

SKIP 10

SKIPFWD

SKIPREV

STOP

TIME

10KB

LCD40 SOCKET02 SOCKET08

PCB 802-6

FOOTPRINT

D12

DIODE6

DIP14

JOG/SHUTTLE

LC75854E

LED LED LED

M16A

PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1 PB1

RS60112

UTN-H241JV

X2 X8

QUANTITY

1 3 1 1 1 3 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

DESIGNATORS D1 D2, D3, D4 IC1 SW6 IC2 LED4, LED1, LED5 LED3, LED6, LED7, LED8 LED2 IC4 SW20 SW21 SW19 SW9 SW10 SW8 SW18 SW22 SW3' SW3 SW1 SW15 SW14 SW17 SW11 SW2 SW5 SW16 SW13 SW12 SW7 SW4 VR1 IC3 X1 X2

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