BOSE TG_pages40-64 Datasheet

Page 1

Computer Setup Procedure

Use this procedure to set up your IBM compatible PC for communication with the 321 system console.

1. Open a terminal window, as shown at right, in either Terminal or Hyperterm, as applicable for the version of Microsoft Windows® you are using on your PC.

2. In the terminal window, click on FILE, then PROPERTIES. Set the properties in the dialog box as shown at right.

3. In the properties dialog box shown in step 2, click on CONFIGURE to set the COM1 Properties as shown at right. Click OK to return to the properties dialog box.

See the next page for the conclusion of this setup procedure.

Page 2

Computer Setup Procedure (continued)

4. In the properties dialog box, click on the

SETTINGS tab and set the controls as shown in the example at right. Note: Be sure to check "Beep three times when connecting or disconnecting".

5. In the properties dialog box under the SETTINGS tab, click on the ASCII Setup button and set the controls to look like the example at right. Click OK to return to the properties dialog box.

6. Once you have made all of the settings in the properties dialog box, click OK to close it. You have now configured your PC to communicate with the 3 console under test, in the terminal window, click on CALL, then CONNECT and listen for 3 beeps. This will tell you that the PC is connected to communicate with the console. When you have completed your session, click on CALL, then DISCONNECT to end communication with the console.

21 system console. To connect to the

Page 3

Console TAP Commands

21 console can be controlled by means of test access port (TAP) commands via the

The 3 321 system TAP cable, part number 266603, from one of the computer's serial data ports to the TAP port located on the LCD display PCB. This port can be accessed from the outside of the

console without disassembling the unit. You will need the TAP cable and a RS-232 to TTL converter, such as the B+B Electronics model 232LPTTL. You can purchase the converter online at http://www.bb-elec.com.

The communication link for the TAP facility is: Via a three wire TTL electrical interface (Transmit data, Receive data, Ground). Logically inverted receive and transmit signals from RS-232 specification. Same asynchronous character / timing construction as RS-232 specification requires.

The computer serial data port used for communication should be configured as follows: Half-Duplex operation 9600 baud 8-bits / data character 1 stop bit No parity The console echoes all commands

Refer to the computer setup procedure earlier in this section for instructions.

There is no special action required to put the 3 applied TAP control may be used.

21 console does not respond to multiple commands simultaneously. The user must

The 3 receive an acknowledgement (ack) prior to issuing the next TAP command.

The tables on the following pages list the TAP commands broken down into the various subsections of console functions.

21 console into TAP mode. Once power is

Page 4

TAP Commands for control of the 3

Note: In the following tables, (\r) denotes carriage return, (b) denotes space, all other characters

are ASCII in the cases shown.

Tuner Subsystem

21 media center

Message Function Command

from External

Get Tuner Region TGTR\r Tuner

Set Tuner Region ETWR01nn\r ACK Sets tuner region nn.

Get Tuner status TUGS\r NEWLINE

Select FM Band TUFM\r ACK Subsequent Tuner functions operate on

Set Frequency TUSFdddds\r (ACK) or

Get Frequency (AM) Get Frequency (FM US/Japan) Get Frequency (FM Europe) Display RDS strings

Note: This command will work on European units only.

TUGF\r (ddd) or

TUGF\r (dd.d) or

TUGF\r (·dd.dd) or

TUDR\r

3-2-1 Response

region code: nn

Jjkk ACK

(NACK)

(dddd)

(ddd.d)

(ddd.dd)

PS data; …ssssssss PTY data; …iiii PTYN data; …tttttttt RT data; …rrrrrrrr

Comments

Returns tuner region nn. 00=US, 01=Japan, 02=Europe

00=US, 01=Japan, 02=Europe “jj’ is an ascii hex representation of the signal strength in the form of the S-meter

reading. “kk” is an ascii hex representation of a byte which decodes as follows: bits 7 through 4 are not used. Bit 3 is stereo_strong which is 1 when the signal is above stereo threshold. Bit 2 is in_stereo which is 1 when in stereo mode. Bit 1 is RDS_present which is 1 when RDS is present. Bit 0 (LSB) is signal_strong which is 1 when the signal is above the stop level.

the FM band. NACK indicates invalid frequency mddds

is an ASCII representation of frequency (without decimal point). The left-most four digits (mddd) are used for all settings except FM in Europe. 06100 is 610 kHz in AM, 10710 is 107.1 MHz in FM in the US. 10715 is 107.15 MHz in FM in Europe. Frequency < =999 kHz Frequency =>1000 kHz Frequency <= 99.9 MHz Frequency =>100.0 MHz Frequency <= 99.99 MHz Frequency =>100.00 MHz Returns all RDS strings. 0 to 8 characters

0 to 16 characters

0 to 8 characters

0 to 64 characters

Page 5

TAP Commands for control of the 3

Note: In the following tables, (\r) denotes carriage return, (b) denotes space, all other characters

are ASCII in the cases shown.

Tuner Subsystem (continued)

21 media center (continued)

Message Function Command

from External

Seek Up TUSP\r (1 SACK) or

Seek Down TUSD\r (1 SACK) or

Store AM stop level manually Store FM stop level manually Store Stereo Threshold level manually Store force-mono Threshold level manually Read s-meter and store as AM stop level Read s-meter and store as FM stop level Read s-meter and store as stereo threshold level Read s-meter and store as forcemono threshold level. Get AM stop level TURA\r

Get FM stop level TURF\r

Get stereo Threshold level Get force-mono Threshold level Store IF offset –50kHz

Store IF offset

-25kHz

TUATkk\r ACK “kk” is stop level in ASCII hex 0-0xFF.

TUFTkk\r ACK “kk” is stop level in ASCII hex 0-0xFF

TUSTkk\r ACK “kk” is threshold level in ASCII hex 0-

TUMTkk\r ACK “kk” is threshold level in ASCII hex 0-

TUAR\r ACK

TUFR\r ACK

TUSR\r ACK

TUMR\r ACK

TURS\r

TURM\r kk ACK “kk” is force-mono threshold level in

TUI1\r ACK Sets IF Offset and Stores 25 kHz muliplier

TUI2\r ACK Sets IF Offset and Stores 25 kHz muliplier

3-2-1 Response

(0 SNACK)

kk ACK

Comments

“s” is ASCII 1 if seek resulted in a station found. “s” is ASCII 0 if no station found. “s” is ASCII 1 if seek resulted in a station found. “s” is ASCII 0 if no station found

0xFF.

“kk” is AM stop level in ASCII hex 000xFF. “kk” is FM stop level in ASCII hex 000xFF. “kk” is stereo threshold level in ASCII hex 00-0xFF.

ASCII hex 00-0xFF.

- 2

- 1

Page 6

TAP Commands for control of the 3

Note: In the following tables, (\r) denotes carriage return, (b) denotes space, all other characters

are ASCII in the cases shown.

Tuner Subsystem (continued)

21 media center (continued)

Message Function Command

from External

Store IF offset

0.00 kHz Store IF offset +25kHz Store IF offset +50kHz Store IF offset automatically Get IF offset multiplier

TUI3\r ACK Sets IF Offset and Stores 25 kHz muliplier

TUI4\r ACK Sets IF Offset and Stores 25 kHz muliplier

TUI5\r ACK Sets IF Offset and Stores 25 kHz muliplier

TUIF\r ACK Determines, sets and stores correct IF

TUGI\r TUGI·····j>

3-2-1 Response

ACK

Comments

= 0

= 1

= 2

offset multiplier automatically. “j” is an ASCII character which is the IF offset multiplier. (integer -2 to 2)

Audio Control Subsystem

Message Function

Set Volume AUSVnn\r (ACK) or

Get Volume AUGV\r nn ACK “nn” hex ASCII representation of volume value. Set Balance AUBAnn\r (ACK) or

Get Balance AUGL\r nn ACK “nn” hex ASCII representation of balance value. Set Surround AUSSnn\r (ACK) or

Get Surround AUGS\r nn ACK “nn” hex ASCII representation of surround value. Set Treble AUSTnn\r (ACK) or

Get Treble AUGT\r nn ACK “nn” hex ASCII representation of treble value. Set Bass AUSBnn\r (ACK) or

Get Bass AUGB\r nn ACK “nn” hex ASCII representation of bass value.

Command from External

3-2-1 Response

(NACK)

Comments

“nn” hex ASCII representation of volume value to set to in 3-2-1. (00h-63h) NACK indicates invalid value. Value represents display value of volume only.

“nn” hex ASCII representation of balance value to set to in 3-2-1. (+/-9) NACK indicates invalid value.

“nn” hex ASCII representation of surround value to set to in 3-2-1. (+/-9) NACK indicates invalid value.

“nn” hex ASCII representation of treble value to set to in 3-2-1 (+/-9). NACK indicates invalid value.

“nn” hex ASCII representation of bass value to set to in 3-2-1 (+/-9). NACK indicates invalid value.

Page 7

TAP Commands for control of the 3

Note: In the following tables, (\r) denotes carriage return, (b) denotes space, all other characters

are ASCII in the cases shown.

LCD Display Subsystem

21 media center (continued)

Message Function Command

from External

Disable normal LCD output and blank LCD Turn on all LCD segments and bright backlight Turn on LCD diagonal test pattern and dim backlight Back-light dim. LCBD\r ACK Back-light bright. LCBB\r ACK Back-light off. LCBF\r ACK

LCOF\r ACK

LCON\r ACK

LCPO\r ACK

3-2-1 Response

EEPROM Subsystem

Message Function Command

from External

Write EEPROM data and checksums

EECS\r ACK or NACK Copies all data from mirror RAM to

3-2-1 Response

Comments

EEPROM and calculates/stores checksums. Note: You MUST issue this command when setting AM and FM stop levels, FM IF centering and FM stereo and forcemono threshold. Failure to do so will result in your changes being lost when power is removed.

Page 8

TAP Commands for control of the 3

Note: In the following tables, (\r) denotes carriage return, (b) denotes space, all other characters

are ASCII in the cases shown.

Software Subsystem

21 media center (continued)

Message Function Command

from External

Get Main and Display firmware revisions Get Main Firmware Revision and Checksum Get Display Firmware Revision and Checksum Get Disc drive region information: Firmware versions except 01.03.01 and 51.02.06

Get Disc Drive region information: Firmware version

01.03.01 and

51.02.06

MMMD\r xxxxxx yyy xxxxxx is the main revision

MMMN\r MNRV321

MMDY\r DYRVrrrrcccc>

MRGN\r MRGNaabbcc

MRGN\r MRGNrffffv r = 1-6; DVD region code

3-2-1 Response

vvv>

ACK

GGHH!

Comments

yyy is the display revision

vvv is the version number.

rrrr is the ASCII representation of the revision. cccc is the hex checksum.

aa-vendor reset = [0-4] bb-user change = [0-5] cc-type code = if user = [2-5] then 1 if user = 1 then 2 if user = 0 then 3 dd = region mask not set = FF Region 0 = FE Region 1 = FD Region 2 = FB Region 3 = F7 Region 4 = EF Region 5 = DF Region 6 = BF ee = rpc scheme = 01

ffff = 1B06; last four characters of DVD firmware version. v = 0,1; NTSC, PAL video format.

Page 9

TAP Commands for control of the 3

Note: In the following tables, (\r) denotes carriage return, (b) denotes space, all other characters

are ASCII in the cases shown.

DVD Backend Subsystem

21 media center (continued)

Message Function Command

from External

Pass DVD Backend TAP command

LXTPxx\r ACK “xx” are hex characters that signify

3-2-1 Response

Comments

Luxsonor TAP command per the following table.

DVD Backend TAP Codes (used with LXTP command above)

0x”XX” Description

02 Test video pattern OFF. 03 Test video pattern ON. 09 Set DVD region 1 0A Set DVD region 2

0B Set DVD region 3 0C Set DVD region 4 0D Set DVD region 5 0E Set DVD region 6

80 Set default video to NTSC

81 Set default video to PAL

Page 10

TAP Commands for control of the 3

Note: In the following tables, (\r) denotes carriage return, (b) denotes space, all other characters

are ASCII in the cases shown.

Remote Control Simulation

21 media center (continued)

Message Function Command

from External

Remote control button simulation

REMTcc\r (ACK) or

3-2-1 Response

(NACK)

Comments

NACK indicates invalid command. cc is the ASCII decimal representation of the specified button (supplied with leading zeroes) from the following table.

Remote Control Button Codes

Button Code Button Code Button Code

K_POWER 01 K_VOLDN 16 K_SEVEN 31 K_CD 02 K_MUTE 17 K_EIGHT 32 K_AUX 03 K_STPOPEN 18 K_NINE 33 K_VID1 04 K_NAVUP 19 K_MENU 34 K_VID2 05 K_NAVDN 20 K_EXIT 35 K_AM 06 K_ENTER 21 K_REWND 36 K_FM 07 K_NAVRT 22 K_FASTFW 37 K_PSPLAY 08 K_NAVLT 23 K_PAUSE 38 K_SKIPL 09 K_ZERO 24 K_EXTRA 39 K_SKIPR 10 K_ONE 25 K_NOKEY 40 K_STOP 11 K_TWO 26 K_CDMODE 41 K_PRESETUP 12 K_THREE 27 K_REPEAT 42 K_PRESETDN 13 K_FOUR 28 ANY_MODAL 43 K_SETUP 14 K_FIVE 29 K_VOLUP 15 K_SIX 30

Page 11

TAP Commands for control of the 3

Note: In the following tables, (\r) denotes carriage return, (b) denotes space, all other characters

are ASCII in the cases shown.

Audio Processing Subsystem

21 media center (continued)

Message Function Command

from External

Reset the audio DSP Balance command BA v\r “v” is a value between –10 and 10. Clip disable CL m\r “m” is the clip detector processing

Set Compressor mode Set Decoder mode DE m\r “m” is the mode. AC3 decodes AC3

Echo enable command

Mute outputs MU c v\r “c” specifies which channel to mute.

Ooze setting OO v\r “v” is a value between –10 and 6. Set presentation mode

Surround balance control Set Surround level SL v\r “v” is a value between –10 and 6. Source select SO c s\r “c” is the channel specified. Choices

RE\r

CO m\r “m” is either ON or OFF. A space

EC m\r “m” is the echo mode. ON echoes the

PM mm\r “mm” is the presentation mode. 4W is

SB v\r “v” is a value between –10 and 10.

3-2-1 Response Comments

mode. It is either ON or OFF.

toggles the mode.

stream, PCM decodes the PCM stream and AUTO lets the software select the decoder automatically.

characters out the RS-232 port. OFF means no characters are sent out the RS-232 port

The values are L,C,R,LS,RS,B or ALL. “v” is either ON (muted) or OFF (un-muted). All channels can be controlled individually with a comma separated string of values. The assumed order is as above.

4 axis wide, 2W is two axis wide, 4N is four axis narrow and 2N is two axis narrow.

are L,C,R,LS,RS,B. “s” is the source for the channel. Choices are D for digital, A for analog, S for 1kHz sine, DL for digital left, C for center, DR for digital right, LS for left surround, RS for right surround, LFE, AL for analog left and AR for analog right.

Page 12

TAP Commands for control of the 3

Note: In the following tables, (\r) denotes carriage return, (b) denotes space, all other characters

are ASCII in the cases shown.

Audio Processing Subsystem (continued)

21 media center (continued)

Message Function Command

from External

Request status information Set Tone controls TO c,v\r “c” is the control to be changed. The

Set volume VO c v\r “c” is the channel to be modified. The

ST\r Displays console status information.

3-2-1 Response Comments

controls are B (bass), T (treble) and FE (film EQ). “v” is the value to set the control to. For B and T, the value is a number between –128 and 127. For FE, the values can be: ON for Film EQ on, OFF for film EQ off, BON for bass boost from film EQ on, BOFF which turns off the film EQ bass boost, HON for HF cut from film EQ on and HOFF which turns off the film EQ HF cut.

choices are L,C,R,LS,RS,B or ALL. “v” is the attenuation value in dB down from maximum.

Page 13

Tuner S-Meter Hexidecimal to Decimal to Voltage Conversion Charts:

HEX Decimal S-Meter

Voltage Level

0 0 0.000V 1 1 0.020V 2 2 0.039V 3 3 0.059V 4 4 0.078V 5 5 0.098V 6 6 0.117V 7 7 0.137V 8 8 0.156V 9 9 0.176V A 10 0.195V B 11 0.215V C 12 0.234V D 13 0.254V E 14 0.273V

F 15 0.293V 10 16 0.312V 11 17 0.332V 12 18 0.352V 13 19 0.371V 14 20 0.391V 15 21 0.410V 16 22 0.430V 17 23 0.449V 18 24 0.469V 19 25 0.488V 1A 26 0.508V 1B 27 0.527V

1C 28 0.547V 1D 29 0.566V 1E 30 0.586V 1F 31 0.605V

20 32 0.625V 21 33 0.645V 22 34 0.664V 23 35 0.684V 24 36 0.703V 25 37 0.723V 26 38 0.742V 27 39 0.762V 28 40 0.781V 29 41 0.801V

2A 42 0.820V 2B 43 0.840V 2C 44 0.859V

HEX Decimal S-Meter

Voltage Level

2D 45 0.879V 2E 46 0.898V 2F 47 0.918V 30 48 0.938V 31 49 0.957V 32 50 0.977V 33 51 0.996V 34 52 1.016V 35 53 1.035V 36 54 1.055V 37 55 1.074V 38 56 1.094V 39 57 1.113V 3A 58 1.133V 3B 59 1.152V 3C 60 1.172V 3D 61 1.191V 3E 62 1.211V 3F 63 1.230V 40 64 1.250V 41 65 1.270V 42 66 1.289V 43 67 1.309V 44 68 1.328V 45 69 1.348V 46 70 1.367V 47 71 1.387V 48 72 1.406V 49 73 1.426V 4A 74 1.445V 4B 75 1.465V 4C 76 1.484V 4D 77 1.504V 4E 78 1.523V 4F 79 1.543V 50 80 1.562V 51 81 1.582V 52 82 1.602V 53 83 1.621V 54 84 1.641V 55 85 1.660V 56 86 1.680V 57 87 1.699V 58 88 1.719V 59 89 1.738V

Page 14

Tuner S-Meter Hexidecimal to Decimal to Voltage Conversion Charts (continued):

HEX Decimal S-Meter

Voltage Level

5A 90 1.758V 5B 91 1.777V 5C 92 1.797V 5D 93 1.816V 5E 94 1.836V 5F 95 1.855V 60 96 1.875V 61 97 1.895V 62 98 1.914V 63 99 1.934V 64 100 1.953V 65 101 1.973V 66 102 1.992V 67 103 2.012V 68 104 2.031V 69 105 2.051V 6A 106 2.070V 6B 107 2.090V 6C 108 2.109V 6D 109 2.129V 6E 110 2.148V 6F 111 2.168V 70 112 2.188V 71 113 2.207V 72 114 2.227V 73 115 2.246V 74 116 2.266V 75 117 2.285V 76 118 2.305V 77 119 2.324V 78 120 2.344V 79 121 2.363V 7A 122 2.383V 7B 123 2.402V 7C 124 2.422V 7D 125 2.441V 7E 126 2.461V 7F 127 2.480V 80 128 2.500V 81 129 2.520V 82 130 2.539V 83 131 2.559V 84 132 2.578V 85 133 2.598V 86 134 2.617V 87 135 2.637V

HEX Decimal S-Meter

Voltage Level

88 136 2.656V 89 137 2.676V 8A 138 2.695V 8B 139 2.715V 8C 140 2.734V 8D 141 2.754V 8E 142 2.773V 8F 143 2.793V 90 144 2.812V 91 145 2.832V 92 146 2.852V 93 147 2.871V 94 148 2.891V 95 149 2.910V 96 150 2.930V 97 151 2.949V 98 152 2.969V 99 153 2.988V 9A 154 3.008V 9B 155 3.027V 9C 156 3.047V 9D 157 3.066V 9E 158 3.086V 9F 159 3.105V A0 160 3.125V A1 161 3.145V A2 162 3.164V A3 163 3.184V A4 164 3.203V A5 165 3.223V A6 166 3.242V A7 167 3.262V A8 168 3.281V

A9 169 3.301V AA 170 3.320V AB 171 3.340V AC 172 3.359V AD 173 3.379V AE 174 3.398V AF 175 3.418V B0 176 3.438V B1 177 3.457V B2 178 3.477V B3 179 3.496V B4 180 3.516V B5 181 3.535V

Page 15

Tuner S-Meter Hexidecimal to Decimal to Voltage Conversion Charts (continued):

HEX Decimal S-Meter

Voltage Level

B6 182 3.555V B7 183 3.574V B8 184 3.594V B9 185 3.613V BA 186 3.633V

BB 187 3.652V BC 188 3.672V BD 189 3.691V

BE 190 3.711V

BF 191 3.730V

C0 192 3.750V

C1 193 3.770V

C2 194 3.789V

C3 195 3.809V

C4 196 3.828V

C5 197 3.848V

C6 198 3.867V

C7 199 3.887V

C8 200 3.906V

C9 201 3.926V CA 202 3.945V CB 203 3.965V CC 204 3.984V CD 205 4.004V CE 206 4.023V

CF 207 4.043V

D0 208 4.062V

D1 209 4.082V

D2 210 4.102V

D3 211 4.121V

D4 212 4.141V

D5 213 4.160V

D6 214 4.180V

D7 215 4.199V

D8 216 4.219V

D9 217 4.238V DA 218 4.258V DB 219 4.277V DC 220 4.297V DD 221 4.316V DE 222 4.336V

DF 223 4.355V

E0 224 4.375V

E1 225 4.395V

E2 226 4.414V

E3 227 4.434V

HEX Decimal S-Meter

Voltage Level

E4 228 4.453V E5 229 4.473V E6 230 4.492V E7 231 4.512V E8 232 4.531V

E9 233 4.551V EA 234 4.570V EB 235 4.590V EC 236 4.609V ED 237 4.629V EE 238 4.648V EF 239 4.668V

F0 240 4.688V

F1 241 4.707V

F2 242 4.727V

F3 243 4.746V

F4 244 4.766V

F5 245 4.785V

F6 246 4.805V

F7 247 4.824V

F8 248 4.844V

F9 249 4.863V FA 250 4.883V FB 251 4.902V FC 252 4.922V FD 253 4.941V FE 254 4.961V FF 255 4.980V

Page 16

Console Main PCB Video Troubleshooting and Waveforms

Note: Refer to the 3

The video circuitry will not operate without the 27 MHz video clock signal VDO_CLK. This signal originates at crystal Y7056 [sheet 5, B3], fed out as signal XM27HZ over to inverter U7008 [sheet 5, B1] and output as signal DX27MHZ. This clock signal is then sent over to pin 202 of the DVD decoder IC U3000 [sheet 12, B/C2]. It is fed out of U3000 as the buffered 27 MHz clock signal VDO_CLK at pin 154 [sheet 3, D6]. From there VDO_CLK is fed to the Video DAC U5000 [sheet 10, C7], input as pin 33.

The video data bitstream signals VDO-0 to VDO-7 are fed to the Video DAC from the DVD decoder IC U3000 [sheet 3, C/D6].

The Video DAC takes the digital video bitstreams and converts them to the formats for both the composite and S-Video outputs. Video signals are made up of Luminance (Y) information (black and white) and Chrominance (C) information (color). Both of these signals combined make up composite video (CV). S-Video uses the same signals, but keeps them separate until they sent to the video monitor, resulting in better video fidelity. Combining these two signals before the video monitor results in some overall signal degradation.

We will start by checking the waveforms coming out of the Video DAC U5000 [sheet 10, B/C/ D7]. You will need a 100 MHz oscilloscope with video triggering and a DC coupled scope probe to get these waveforms.

21 Console schematics for the following information.

Remove the top cover of the console, the DVD drive and the casting using the console disassembly/assembly procedures in this manual. Connect the bass module to the console using the system cable, or you can apply power using the test cable described earlier in the appendix. Do not connect the array speakers to the console.

Apply power to the console and set the output volume all the way down to avoid overheating the amplifier IC. Select the AUX input and press SETTINGS. This will start the video circuitry running without the need for a DVD to be playing or a source to be plugged into the console.

We will check the composite video (CV) output of the Video DAC U5000 at pin 44 first [sheet 10, C7]. The filter network composed of inductor L5000 and associated components filter out any residual 27 MHz artifacts. The signal at TP575 should look like the wavform at right.

Composite Video Signal at TP575 from pin 44 of U5000

Page 17

Below is the signal at TP575 again, but expanded to show the detail of the waveform.

Composite Video Signal (expanded) at pin 44 of U5000

Below is the unloaded composite video (CV) signal output which originates at pin 26 of U5001, the A/V MUX located at grid coordinates [sheet 10, D1]. This waveform was taken at the composite video output RCA jack at J5001 on the console rear panel. You can also see it at TP684 on the main PCB.

Composite Video Signal from pin 26 of U5001 (unloaded)

Page 18

Below is the 75 Ohm loaded composite video (CV) signal output which originates at pin 26 of U5001, the A/V MUX located at grid coordinates [sheet 10, D1]. Note that the amplitude is about half that of the unloaded waveform on the previous page. This waveform was taken at the composite video output RCA jack at J5001 on the console rear panel.

Composite Video Signal from pin 26 of U5001 (75 Ohm load)

We will now look at the signal path for the luminance (Y) video information, which is the black and white component of the S-Video signal. This waveform originates at the Video DAC U5000 at pin 48 (TP139).

Luminance Video Signal from pin 48 of U5000

Page 19

This is the same luminance (Y) video signal as the previous one, but expanded to show waveform detail. This waveform originates at the Video DAC U5000 at pin 48 (TP139).

Luminance Video Signal (expanded) from pin 48 of U5000

Below is the luminance (Y) video signal as seen at pin 3 of the S-Video output DIN jack. This is with no load on the output. The signal originates at U5001 pin 22.

Luminance Video Signal (unloaded) S-Video DIN Connector pin 3

Page 20

Below is the same luminance (Y) video signal as on the previous page, but with a 75 Ohm load. It is taken at pin 3 of the S-Video output DIN jack. Note that the waveform amplitude is about half that of the previous waveform. The signal originates at U5001 pin 22.

Luminance Video Signal (75 Ohm load) S-Video DIN Connector pin 3

We will now look at the signal path for the chrominance (C) video information, which is the color component of the S-Video signal. The waveform below originates at the Video DAC U5000 at pin 47 (TP516).

Chrominance Video Signal at U5000 pin 47 (TP516)

Page 21

This is the same chrominance (C) video signal as the previous one, but expanded to show waveform detail. This waveform originates at the Video DAC U5000 at pin 47 (TP516).

Chrominance Video Signal (expanded) at U5000 pin 47 (TP516)

Below is the chrominance (C) video signal as seen at pin 4 of the S-Video output DIN jack. This is with no load on the output. The signal originates at U5001 pin 24.

Chrominance Video Signal (unloaded) S-Video DIN Connector pin 4

Page 22

Below is the same chrominance video signal (C) as on the previous page, but with a 75 Ohm load. It is taken at pin 4 of the S-Video output DIN jack. Note that the waveform amplitude is about half that of the previous waveform. The signal originates at U5001 pin 24.

Chrominance Video Signal (75 Ohm load) S-Video DIN Connector pin 4

Page 23

Bass Module Troubleshooting Information

Note: Refer to the bass module amplifier board schematic sheet for the following information.

The bass module amplifier board uses two different ground potentials. When troubleshooting, be careful that you are using the correct ground (reference) point. The ground point for the power supply circuitry is at the negative (-) side of bridge BR1. When troubleshooting, be sure to reference your tests to the negative side of BR1. Be sure to float the ground on your test equipment, including your oscilloscope. You can do this by using an 3 prong to 2 prong AC adapter plug that does not have a ground pin. The ground reference used on the bass module is at a DC voltage level.

This circuitry creates the +16 VDC voltage used by the console, which is seen at the positive side of C22. The system ground point is PGND.

Common Problems:

 Q1 MOSFET shorts DRAIN to SOURCE. Rarely opens. If Q1 were to short, the symptom

would be that the power supply output voltage at V (TP5) would be used by the console and could cause distortion at high volume levels or the console to shut down, or both.

> 22 Vdc. This voltage is

 Q2 and Q3 fail. PNP transistors short and open. Sometimes need to replace both at the same

time instead of one at a time.

 U1 Power amplifier. TDA7396 fails.  ZR1 16 V Zener diode fails. Zener ZR1 controls the turn on / turn off of Q2, Q3 and Q1.  BR1 Bridge rectifier fails.

Changing the 321 Console Region Code

Note: You can only change the region code for a console a total of 4 times. After that the console

will set the region code to the last one changed to permanently.

1. Connect the B+B RS-232 to TTL converter to one of the serial data ports on the back of your IBM compatible PC. Connect the TAP interface cable, part number 266603, to the B+B converter. Plug the other end of the cable into J1 of the 3-2-1 console display board. This connector can be accessed from outside the cabinet, under the right side of the front of the console.

2. Set up your computer as shown in the computer setup procedure in the appendix of this manual.

3. Power up the 3 up using the computer setup procedure. Open the connection between the PC and the console.

4. On the console, place a DVD disc of the region that you want to change to into the console tray. For example, if you wanted to change a region code 1 console to region 2, you would place a region code 2 DVD disc into the console. Let the disc spin up. The display will read "loading".

21 system console. On the PC, open the terminal window that you have set

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Changing the 321 Console Region Code (continued)

5. On the PC, type in the applicable TAP command from the table below and press ENTER on

the keyboard. The region code will have changed to the new region. See the table below.

Regions Covered Region

Code

U.S., Canada, Puerto Rico 1 LXTP09 MRGN04xx01FE01 Europe, Middle East, Japan 2 LXTP0a MRGN04xx01FD01 Southeast Asia, Hong Kong, Taiwan 3 LXTP0b MRGN04xx01FB01 Central America, Mexico, South America, Australia, New Zealand Russia, Africa (except Egypt and South Africa), India, Pakistan China 6 LXTP0e MRGN04xx01DF01

Table 1. Region Code Tap Commands and Responses

You can check to see what region code your console is set to by typing in the MRGN command in the terminal window. The console will respond with a message similar to the one at right. At right you will see that the console has responded MRGN040201FE01. The first two characters after the MRGN are 04, and they indicate the number of times that the drive manufacturer can reset the drive. It will almost always be

04. The next two characters are the number of times remaining that a service center can reset the region code. In this example there are two more changes (02) remaining. The next two characters (01) are the type code, which indicates the status of the drive: 00 = no drive region set; 01 = drive region set; 02 = drive region set /w additional restrictions (last chance), 03 = drive region has been set permanently. This number increments when the drive approaches the last time it can be changed before it is set permanently to the selected region. The next two characters are an eight bit hexidecimal representation of the region that the drive is currently set to. In the example, the FE corresponds to region 1. The other regions are listed in the table above. The last two characters are for the CSS encryption. For all units in the field, these two characters will always be 01.

4 LXTP0c MRGN04xx01F701

5 LXTP0d MRGN04xx01EF01

Command MRGN Command

Response

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Parental Control Information

The parental control circuitry prevents unauthorized viewing of DVDs above a user specified setting. The user is required to set a four number password for DVDs with ratings above the rating set by the user. If a user forgets what his four number password is, he/she will not be able to view movies above the set rating. If a customer has forgotten his password, there is a generic password that can be used to bypass the lock-out. The password is BOSE (2673), as spelled on a telephone. Once the original password has been bypassed, the customer can set a new one. The parental control settings used in the 3-2-1 Home Entertainment System are from 1 to 8, with 8 being the lowest security and 1 the highest. See the table below for an listing of the settings and how they correspond to the various Motion Picture Association of America (MPAA) ratings.

DVD Rating General Description of Rating MPAA Rating

8 Unrated (generally most restricted) 7 Adult audiences NC-17 6 Mature audiences R 5 Mature teenage audiences 4 Teenage audiences PG-13 3 Mature young audiences PG 2 Most audiences 1 General (unrestricted audiences) G

Table 2. 321 Console DVD Parental Control Rating Codes

Console Display Test

Using this procedure, you will be able to verify that all of the console LCD elements work properly by lighting all of them at once. Use the following steps.

1. Remove AC mains power to the bass module.

2. Re-apply AC mains power to the bass module. Within 10 seconds of re-applying power, press

the right hand three buttons on the top of the console at the same time. All of the LCD display segments should light as shown in the figure below. Note: The RDS segment is used on European models only.