--- a/content/hp8662a.rst Wed Oct 16 21:52:38 2019 +0200
+++ b/content/hp8662a.rst Wed Oct 16 21:53:47 2019 +0200
@@ -14,7 +14,7 @@
cheap enough, more, what the fun in buying properly working test equipment?)
I wanted to make a break in my current other repair project, the `EIP 545B
-Microwave Fequency Meter <{filename}eip545b.rst>`_, also having a properly
+Microwave Fequency Meter <{static}eip545b.rst>`_, also having a properly
working unit such as this incredible signal synthetizer would be quite useful
to perform several adjustement tasks on the EIP 545B.
@@ -42,7 +42,7 @@
before even attempting to fix the PSU.
-.. image:: {filename}images/hp8662a/dirty_hp.jpg
+.. image:: {static}/images/hp8662a/dirty_hp.jpg
:class: image-process-large-photo
@@ -52,18 +52,18 @@
soldered point to point, which makes disassembling the case, motherboards and
so very tedious.
-.. image:: {filename}images/hp8662a/top_before_2.jpg
+.. image:: {static}/images/hp8662a/top_before_2.jpg
:class: image-process-large-photo
-.. image:: {filename}images/hp8662a/bottom_before.jpg
+.. image:: {static}/images/hp8662a/bottom_before.jpg
:class: image-process-large-photo
-.. image:: {filename}images/hp8662a/front_after.jpg
+.. image:: {static}/images/hp8662a/front_after.jpg
:class: image-process-large-photo
Also, there are hundreds of screws in this unit! it's insane.
-.. image:: {filename}images/hp8662a/top_after.jpg
+.. image:: {static}/images/hp8662a/top_after.jpg
:class: image-process-large-photo
Whatever, I finally got to a point I could clean most of the parts of the unit,
@@ -71,14 +71,14 @@
while the disassembling, so it took me some effort to have something that looks
like an HP 8662A...
-.. image:: {filename}images/hp8662a/reassembling_2.jpg
+.. image:: {static}/images/hp8662a/reassembling_2.jpg
:class: image-process-large-photo
Once I had the structure of the generator back togother, with the back plane in
place but no other board nor module plugged in, I started to take care of the
PSU.
-.. image:: {filename}images/hp8662a/reassembling_1.jpg
+.. image:: {static}/images/hp8662a/reassembling_1.jpg
:class: image-process-large-photo
The PSU
@@ -94,7 +94,7 @@
- The main switching power supply. The high voltage section is allways on, and
the mani switch on the front panel only activate the switching.
-.. image:: {filename}images/hp8662a/PSU_simplified_schematic.jpeg
+.. image:: {static}/images/hp8662a/PSU_simplified_schematic.jpeg
:class: image-process-large-photo
The 4 boards the PSU is made of are:
@@ -114,7 +114,7 @@
- a daughter board (A7A2) with the switching control circuit. The switching
regulation being made on the 5.2V rail, which is not regulated by A7A1.
-.. image:: {filename}images/hp8662a/PSU_block_diagram.jpeg
+.. image:: {static}/images/hp8662a/PSU_block_diagram.jpeg
:class: image-process-large-photo
So I gave a close look at thes boards, beginning by the main board, the I found
@@ -126,7 +126,7 @@
junk parts; only a slighty highter value one (a XXX, which is more like
20Ω @25°C). Not ideal, but for now, it seems to work fine.
-.. image:: {filename}images/hp8662a/smoking_thermistor.jpg
+.. image:: {static}/images/hp8662a/smoking_thermistor.jpg
:class: image-process-large-photo
After this first step forward, I was not confident enought to plug the boards
@@ -147,7 +147,7 @@
did not stay on, and the error LED did turn on. All the voltages produced by
the inverter board were very low. Somethin was wrong.
-.. image:: {filename}images/hp8662a/PSU_inverter_schematic.jpeg
+.. image:: {static}/images/hp8662a/PSU_inverter_schematic.jpeg
:class: image-process-large-photo
Looking at the schematics and the boards, I did find several failure points:
@@ -161,10 +161,10 @@
more parts than I really need, when these are cheap, just in case; seems to
be a good idea),
- .. image:: {filename}images/hp8662a/broken_choke.jpg
+ .. image:: {static}/images/hp8662a/broken_choke.jpg
:class: image-process-large-photo
- .. image:: {filename}images/hp8662a/replacement_choke.jpg
+ .. image:: {static}/images/hp8662a/replacement_choke.jpg
:class: image-process-large-photo
- there are 2 small 400mA fuses on the inverter board to protect the base of
@@ -176,7 +176,7 @@
each. So for now, I've replaced it with a simple 5x20 glass fuse: not as
skookum but does the job for a few cents.
- .. image:: {filename}images/hp8662a/fuse_replacement.jpeg
+ .. image:: {static}/images/hp8662a/fuse_replacement.jpeg
:class: image-process-large-photo
