Installation
28
025-9368H
Dial Click Option (950-9589) Installation
These installation instructions describe installing the Dial Click option (950-9589) into a Model 748.
You should find the following parts included with the kit:
Quantity
Part Number
Description
Location
1
220-0106
#4-40 x 5/16 pan Philips
1
321-0751
601-0661 (ASIC)
U35
1
702-9242
Dial Click card
J7
This option kit is serial number specific. The invoice should indicate which serial number the kit was
ordered for. If you are installing multiple upgrade kit, you will need to match the kits to the units
before beginning the upgrades. If the AUX LED slowly flashes, this is the problem.
1)
Remove power from the unit.
2)
Remove the top cover from the unit.
3)
Locate J7 (between the AUX and TRANSMIT LEDs) on the main board.
4)
Install the Dial Click card (702-9242) into J7 using the standoff on the other side of the POWER
LED for support. Secure the card to the standoff with the #4-40 x 5/16 screw.
5)
Locate U35 (directly behind the connect switch), remove it and set it aside.
6)
Install new the ASIC in U35 being careful to align the orientation notch and watch out for bent
pins.
7)
Connect a local terminal to the unit's serial port and apply power to the unit. Enter the program
mode, at the Main menu select Options and verify that the Dial Click decode option appears on
the list.
8)
From the Main menu, select the Diagnostic menu. Select the item for the Dial Click decode test.
If an error tone is given when you try to select this item, remover power from the unit and try re-
installing the card (the software cannot find it).
9)
Refer to the Dial Click adjustments under the Installation procedure in this section to complete
the installation.
Summary of Contents for 748
Page 2: ......
Page 68: ...Operation 54 025 9368H Notes...
Page 110: ...Programming 96 025 9368H Notes...
Page 216: ...Feature Set Reference 202 025 9368H Notes...
Page 219: ...Repair 025 9368H 205 MODEL 7XX AUDIO BLOCK DIAGRAM 006 0077A...
Page 225: ...Repair 025 9368H 211 MODEL 7XX CONTROL BOARD 008 9793D Schematic Sheet 1 of 5...
Page 226: ...Repair 212 025 9368H MODEL 7XX CONTROL BOARD SCHEMATIC 008 9793D Sheet 2 of 5...
Page 227: ...Repair 025 9368H 213 MODEL 7XX CONTROL BOARD SCHEMATIC 008 9793D Sheet 3 of 5...
Page 228: ...Repair 214 025 9368H MODEL 7XX CONTROL BOARD SCHEMATIC 008 9793D Sheet 4 of 5...
Page 229: ...Repair 025 9368H 215 MODEL 7XX CONTROL BOARD SCHEMATIC 008 9793D Sheet 5 of 5...
Page 230: ...Repair 216 025 9368H MODEL 7XX CONTROL BOARD 702 9793D Silkscreen...
Page 233: ...Repair 025 9368H 219 MODEL 7XX SINGLE E E CARD 008 9794A Schematic...
Page 234: ...Repair 220 025 9368H MODEL 7XX SINGLE E E CARD 702 9794A Silkscreen...
Page 236: ...Repair 222 025 9368H MODEL 4XB VOICE CARD 008 9236F Schematic...
Page 237: ...Repair 025 9368H 223 MODEL 4XB VOICE CARD 702 9236F Silkscreen...
Page 239: ...Repair 025 9368H 225 MODEL 4XB DIAL CLICK BOARD 008 9242E Schematic...
Page 240: ...Repair 226 025 9368H MODEL 4XB DIAL CLICK BOARD 702 9242E Silkscreen...
Page 254: ...Quick Reference 240 025 9368H Notes...
Page 258: ...Specifications 244 025 9368H...
Page 259: ...Specifications 025 9368H 245...