3 Jan
2010
3 Jan
'10
10:11 a.m.
Yes, on 3 such studs. The ribbon cable connects to the
extra PCB,
another 10 cm long ribbon cable goes to the display PCB. Most signals
are just passed on, the framing signals is generated on the board.
Both my Integrals have this.
OK, I took one of my Integrals apart today to have a look...
This machine has serial number 2521A04575. There are 5 trheaded studs on
the back of the HP-made display hiusing, none holding anything. A 20 way
ribbon cable goes straight from the Logic B PCB to the display module
The display module was made by Sharp. It has 2 labels on the front
plastic frame. The LH one reads 'PM505160652'. The RH one reads
'00095-60032 H h21240' (the first part of that looks like an HP part
number to me)
The display has a conventional PCB on the back, conencted to the
electroluminesxcent panel itself by flexible PCBs which themselves also
have ICs on them. The PC is marked SO262YH and LJ512U03C.
It has 5 connectors. CN1 is the 20 pin plug for the input cable. THe
others all go to the flexiprints.
CN2 is `Data (Odd)' at the top edge, 10 way
CN3 is 'Data (Even)' at the bottom edge also 10 way
CN4 is 'Scan (Odd) at the RH side of the PCB, 15 way
CN5 is 'Scan (Even) at the LH side of the PCB, also 15 way.
There are 14 ICs on the driver PCB, along with 6 8-pin optoisolators, a
DC-DC converter (on a daughterboard) and the components for an HV power
supply. The ICs are :
IC1 : 'LS04
IC2 : 'LS86
IC3 : 75462
IC4 : IR3M01
IC5 : 75462
IC6 : 75462
IC7 : 2732
IC8 : LZ91E11 (this is a PQFP surface-mount device, all others are DIPs)
IC9 : 7815 (OK, that's a TO220 package!)
IC10 : 'LS04
IC11 : 'LS74
IC12 : IR2411
IC13 : 'LS04
IC14 : 'LS04
On the flexiprints are more ICs as follows :
On the print conencted ot the 'Data Even' connector : 8 off LZ1030M
On the print connected to the 'Data Odd' connector : 8 off LZ1232M
On the rpint connected to the 'Scan Odd' connector : 4 off LZ1132BR
On the print connected to the 'Scan Even' connector : 4 off LZ1032AM
Any thoughts?
-tony