Microcontroller M37272M8-131SP
S/M Code No. 09-995-333-9R1
All reports related to the service mode are made using the RC-6VT03 remote control transmitter (86-LBR-951-010) or 86-6VT07, for which the allocation of functions to the keys is shown in the following figure:
The set parameters are signaled on the screen in the form of OSD messages.
Before entering the service mode, you should connect the generator to the antenna input from the generator.
Pre-programming of non-volatile memory If you need to replace the non-volatile memory (IC3, AT93C46-10PI), use the pre-programmed memory.
your vital. The necessary initial entries in specific memory cells can be made as follows:
• press the [TEST] button (hidden) on the remote control transmitter to enter the service mode,
• press the [DISPLAY] button on the remote control transmitter and compare the settings to the following figure:
using the [CHANNEL 1] button move the red cursor to the S2 positions,
using the [VOLUME + -] buttons set the data according to the drawing below:
• press the [DISPLAY] button on the remote control and then the [FINISH] button (hidden button).
Confirmation of the completion of the initialization process is the appearance of "INITIAL" on the screen for a few seconds.
Service regulations AIWA CN202 TV Service Menu
The service mode consists of three positions:
1) AGING - heating function,
2) AFT OK - tuning characteristics.
3) 00OOH - readout of receiver working time.
The mode is selected using the appropriate number keys [1 - 3] on the remote control transmitter.
3.1. Baking mode of the "AGING" receiver
The "AGING" mode is used during the production of reflections for the purpose of cathode ray tube burn-in the function is active the receiver does not switch to standby in the absence of a signal.
3.2. Characteristics of AFT tuning
The second position displays the message: AFT OK, AFT UP or AFT DN. These messages reflect the voltage on n.47 of the IC301 system, which is proportional to the tuning voltage on the S curve according to the drawing:
3.3. Readout of receiver working time
The third position specifies in hexadecimal number of hours of CRT work. which corresponds to: 1x16s + 2x162 + 3x16 '+ 4x16 ° = 4660 hours.
Note: if the status is 7FFF (H), which corresponds to 32,768 hours, the counter will revert to
0000 (H).
1. How To Activate /Release AIWA CN202 Service Mode
JIG remote control unit to operate the service mode should be
used with the remote control unit for RC-6VT03 (86-LBR-951-
010) or 86-6VT07 (86-LBP-951-010).
Test mode is activated by pressing TEST key (Hidden Key under
the label). (Refer to Fig.1).
When the Test Mode is activated, below menu (refer to Fig.2)
will be appeared and turn on and off at one second interval.
Jig Remote Controller
(1) Remove label of jig remote controller.
(2) Cut label of two hidden keys (Finish and Test) into
button size.
(3) Place two timer buttons on the two hidden keys.
(4) Place label back after above steps.
AIWA CN202 TV Service Menu (All TV Service Menu Code)
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"AIWA CN202 TV Service Menu"
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AIWA CN202 TV Service Menu,
Microcontroller M37272M8-131SP
All reports related to the service mode are made using the RC-6VT03 remote control transmitter (86-LBR-951-010) or 86-6VT07, for which the allocation of functions to the keys is shown in the following figure: Written on April 23, 2020