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CD70 AUX IN Modification Guide
Page 1
YOU TAKE YOUR OWN RISKS FOR THIS MODIFICATION! THIS IS ONLY A GUIDE.
YYSNET DEC 2010
GENERAL
STEP 1
Update your CD70 to latest firmware, i.e. 10/10/2007.
Noted that firmware updates require an update disc, this disc is different from language disc. Normally you could request this disc from dealer or borrow from a friend; this is a one time job anyway. Skip this step if you already got 2007 firmware.
To upgrade the firmware, simply put the update CD to “NAVI” slot, and follow the instructions. This step takes about 15 minutes.
STEP 2
Find a Tech2 or vaux-com or similar product to activate your aux-in in the software. A new "Aux" menu will be appeared just as shown in the very last picture of this document after a successful activation. Audio pass is not required for this process.
Use your tech2 or vaux-com or op-com, go to EHU menu, change Code index to 013, (Astra models please change it to 012).
STEP 3
Open your CD70 and solder some components (which are provided by this auction) to the main board, this will require an AVERAGE soldering skill.
CD70 can be easily open with a small flat (to help open the panel), a T9 and a T10 screwdriver.
Please check the schematic, and according to the schematic and placement picture, solder the parts on to the board.
CD70 AUX IN Modification Guide
Page 2
YOU TAKE YOUR OWN RISKS FOR THIS MODIFICATION! THIS IS ONLY A GUIDE.
YYSNET DEC 2010
STEP 4:
Connect 3 wires to the rear connector of unit, and possibly you could buy a 3.5mm stereo socket. Wires and socket are not included, can be easily sourced. e.g. Maplin, Ebay. The wires and that socket will be used for audio signal input, e.g. from your iphone.
COMPONENT LIST
Item Quantity Reference Value
_____________________________________________________
1 4 C1, C2, C4, C5 220n
2 1 C3 220n
3 2 C6, C7 100p
4 1 C8 22u
5 1 C9 47u
6 3 R1, R3, R13 4.7k
7 2 R7, R8 10k
8 2 R9, R12 56k
9 2 R10, R11 100k
10 1 U1 TDA8579
NOTE:
R2, R4, R5, R6 are reserved for pre-amplifier, DO NOT INSTALL.
As a rule of thumb, do NOT leave your tip of solder iron on the pin of component for longer than 5 seconds.
Capacitors C8, C9 are polarized. Black mark in the capacitor indicate negative (-), and the other side is positive (+).
CD70 AUX IN Modification Guide
Page 3
YOU TAKE YOUR OWN RISKS FOR THIS MODIFICATION! THIS IS ONLY A GUIDE.
YYSNET DEC 2010
CD70 AUX IN Modification Guide
Page 4
YOU TAKE YOUR OWN RISKS FOR THIS MODIFICATION! THIS IS ONLY A GUIDE.
YYSNET DEC 2010
FITTING GUIDE
TOOLS:
You will need:
1. A small tip solder iron, at lease 25w, preferably temperature controlled. 2. Some solder wire and flux. 3. Some small tip tweezers. 4. A T9 screwdriver. 5. A flat screwdriver. 6. Patients. 7. See point 6.
TAKE APART YOUR CD70
STEP 1:
Make sure you get have a suitable surface to work with, and place you CD70 there.
CD70 AUX IN Modification Guide
Page 5
YOU TAKE YOUR OWN RISKS FOR THIS MODIFICATION! THIS IS ONLY A GUIDE.
YYSNET DEC 2010
STEP 2:
Use your flat screwdriver, take off the top and bottom metal plates.
STEP 3:
Use your T9 (or T10) screwdriver, take off two copper clips.
CD70 AUX IN Modification Guide
Page 6
YOU TAKE YOUR OWN RISKS FOR THIS MODIFICATION! THIS IS ONLY A GUIDE.
YYSNET DEC 2010
STEP 4:
Carefully take off front panel with your flat screwdriver.
STEP 5:
Undo 8 screws with T9 screwdriver and take off both Navi and CD drives. Be careful when disconnecting the connectors.
CD70 AUX IN Modification Guide
Page 7
YOU TAKE YOUR OWN RISKS FOR THIS MODIFICATION! THIS IS ONLY A GUIDE.
YYSNET DEC 2010
STEP 6:
With your flat screwdriver, take off the front panel. Do NOT over bend the clips.
STEP 7:
Undo 4 T9 screws, and use flat screwdriver to withdraw the lower case.
CD70 AUX IN Modification Guide
Page 8
YOU TAKE YOUR OWN RISKS FOR THIS MODIFICATION! THIS IS ONLY A GUIDE.
YYSNET DEC 2010
STEP 8:
Use flat screwdriver carefully prise the metal screen cover in the circuit board.
STEP 9:
Now this is what it is look like
CD70 AUX IN Modification Guide
Page 9
YOU TAKE YOUR OWN RISKS FOR THIS MODIFICATION! THIS IS ONLY A GUIDE.
YYSNET DEC 2010
SOLDER THE COMPONENTS
Find the location to be work with, and solder the components.
CD70 AUX IN Modification Guide
Page 10
YOU TAKE YOUR OWN RISKS FOR THIS MODIFICATION! THIS IS ONLY A GUIDE.
YYSNET DEC 2010
Solder the parts according to following sketches.
CD70 AUX IN Modification Guide
Page 11
YOU TAKE YOUR OWN RISKS FOR THIS MODIFICATION! THIS IS ONLY A GUIDE.
YYSNET DEC 2010
CD70 AUX IN Modification Guide
Page 12
YOU TAKE YOUR OWN RISKS FOR THIS MODIFICATION! THIS IS ONLY A GUIDE.
YYSNET DEC 2010
CD70 AUX IN Modification Guide
Page 13
YOU TAKE YOUR OWN RISKS FOR THIS MODIFICATION! THIS IS ONLY A GUIDE.
YYSNET DEC 2010
These are what they looks like after the parts are soldered to the PCB. (Values may be varied) Please DO NOT INSTALL R2, R4, R5, R6
CD70 AUX IN Modification Guide
Page 14
YOU TAKE YOUR OWN RISKS FOR THIS MODIFICATION! THIS IS ONLY A GUIDE.
YYSNET DEC 2010
INSERT THE WIRE TO CONNECTOR
PIN24— AUX Left Input
PIN25—AUX Right Input
PIN18—AUX Signal Ground
NOTE:
Do not connect PIN18 to vehicle ground.
Most cars already have these wires in the connector.
PIN25 PIN24
PIN18
CD70 AUX IN Modification Guide
Page 15
YOU TAKE YOUR OWN RISKS FOR THIS MODIFICATION! THIS IS ONLY A GUIDE.
YYSNET DEC 2010
You could place your input socket like this:
