Sony DVP-K370 (serv.man2) Service Manual ▷ View online
6-1
DVP-K370
SECTION 6
TEST MODE
6-1. GENERAL DESCRIPTION
The Test Mode allows you to make diagnosis and adjustment eas-
ily using the remote commander and monitor TV. The instructions,
diagnostic results, etc. are given on the on-screen display (OSD).
ily using the remote commander and monitor TV. The instructions,
diagnostic results, etc. are given on the on-screen display (OSD).
6-2. STARTING TEST MODE
Press the [TOP MENU], [CLEAR], [POWER] keys on the remote
commander in this order with the power of main unit in OFF sta-
tus, and the Test Mode starts, then “DIAG START” will be dis-
played on the fluorescent display tube and the menu shown below
will be displayed on the TV screen. At the bottom of menu screen,
the model name and revision number are displayed. Last Off at
the lower right of screen indicates the information code concern-
ing the last power off. To execute each function, select the desired
menu and press its number on the remote commander. To exit from
the Test Mode, press the [POWER] key.
commander in this order with the power of main unit in OFF sta-
tus, and the Test Mode starts, then “DIAG START” will be dis-
played on the fluorescent display tube and the menu shown below
will be displayed on the TV screen. At the bottom of menu screen,
the model name and revision number are displayed. Last Off at
the lower right of screen indicates the information code concern-
ing the last power off. To execute each function, select the desired
menu and press its number on the remote commander. To exit from
the Test Mode, press the [POWER] key.
6-3. SYSCON DIAGNOSIS
The same contents as board detail check by serial interface can be
checked from the remote commander. On the Test Mode Menu
screen, press [0] key on the remote commander, and the following
check menu will be displayed.
checked from the remote commander. On the Test Mode Menu
screen, press [0] key on the remote commander, and the following
check menu will be displayed.
Power Off Information Code List
00: Primary Power Off
01: Power Off Request from SYSTEM CONTROL
02: Power Off by Emergency Power Off Command from
01: Power Off Request from SYSTEM CONTROL
02: Power Off by Emergency Power Off Command from
SYSTEM CONTROL
(if information is sent from SYSTEM CONTROL)
(if information is sent from SYSTEM CONTROL)
03: IF CON Judged that SYSTEM CONTROL is Faulty
04: Power Off from Diagnosis Mode of IF CON
05: Forced Power Off by the User
06: Power Off by Power Supply Voltage Monitor
04: Power Off from Diagnosis Mode of IF CON
05: Forced Power Off by the User
06: Power Off by Power Supply Voltage Monitor
0. (Quit)
Quit the Syscon Diagnosis and return to the Test Mode Menu.
1. (All items continuous check)
This menu checks all diagnostic items continuously. Normally, all
items are checked successively one after another automatically
unless an error is found, but at a certain item that requires judg-
ment through a visual check to the result, the following screen is
displayed for the key entry.
items are checked successively one after another automatically
unless an error is found, but at a certain item that requires judg-
ment through a visual check to the result, the following screen is
displayed for the key entry.
For the ROM Check, the check sum calculated by the Syscon is
output, and therefore you must compare it with the specified value
for confirmation.
Following the message, press > key to go to the next item, or
. key to repeat the same check again.
output, and therefore you must compare it with the specified value
for confirmation.
Following the message, press > key to go to the next item, or
. key to repeat the same check again.
Test Mode Menu
0. Syscon Diagnosis
1. Drive Auto Adjustment
2. Drive Manual Operation
3. Mecha Aging
4. Emargency History
5. Version Information
6. Video Level Adjustment
Exit: Power Key
_
Model
: DPX-16xxxx
Revision : x.xxx
Last Off: xx
### Syscon Diagnosis ###
Check Menu
0. Quit
1. All
2. Version
3. Peripheral
4. Servo
5. Supply
6. AV Decoder
7. Video
8. Audio
_
### Syscon Diagnosis ###
Diag All Check
No. 2 Version
2-3. ROM Check Sum
Check Sum = 2005
Press NEXT Key to Continue
Press PREV key to Repeat
_
6-2
To quit the diagnosis and return to the Check Menu screen, press
x or [ENTER] key. If an error occurred, the diagnosis is suspended
and the error code is displayed as shown below.
x or [ENTER] key. If an error occurred, the diagnosis is suspended
and the error code is displayed as shown below.
Press x key to quit the diagnosis, or . key to repeat the
same item where an error occurred, or > key to continue the
check from the item next to faulty item.
same item where an error occurred, or > key to continue the
check from the item next to faulty item.
Selecting [2] and subsequent items call the submenu screen of each
item. When “———” is displayed in the submenu, it means that
the test is not supported in the model.
item. When “———” is displayed in the submenu, it means that
the test is not supported in the model.
For example, if “5. Supply” is selected, the following submenu
will be displayed.
will be displayed.
0. (Quit)
Quit the submenu and return to the main menu.
1. (All submenu items continuous check.)
This menu checks 2 and subsequent items successively. At the item
where visual check is required for judgment or an error occurred,
the checking is suspended and the message is output for key entry.
Normally, all items are checked successively one after another
automatically unless an error is found.
Selecting [2] and subsequent items executes respective menus and
outputs the results.
For the contents of each submenu, see “General Description of
Checking Method” and “Check Items List”.
where visual check is required for judgment or an error occurred,
the checking is suspended and the message is output for key entry.
Normally, all items are checked successively one after another
automatically unless an error is found.
Selecting [2] and subsequent items executes respective menus and
outputs the results.
For the contents of each submenu, see “General Description of
Checking Method” and “Check Items List”.
General Description of Checking Method
2. Version
(2-2) Revision
ROM revision number is displayed.
Error: Not detected.
The revision number defined in the source file is displayed
with four digits.
Error: Not detected.
The revision number defined in the source file is displayed
with four digits.
(2-3) ROM Check Sum
Check sum is calculated.
Error: Not detected.
8-bit data are added up to the ROM address 0x000F0000 to
0x002EFFFF, and the result is displayed with 4-digit hexa-
decimal number. Error is not detected. Compare the result
with the specified value.
Error: Not detected.
8-bit data are added up to the ROM address 0x000F0000 to
0x002EFFFF, and the result is displayed with 4-digit hexa-
decimal number. Error is not detected. Compare the result
with the specified value.
(2-4) Model Type
Model code is displayed.
Error: Not detected.
The model code read from the EEPROM is displayed with
2-digit hexadecimal number.
Error: Not detected.
The model code read from the EEPROM is displayed with
2-digit hexadecimal number.
(2-5) Region
Region code is displayed.
Error: Not detected.
The region code determined from the model code is dis-
played.
Error: Not detected.
The region code determined from the model code is dis-
played.
(2-6) M’t Check
Mount resistance is checked.
Error 22: The region code does not accord.
Check whether the region code that is deduced from model
resistance and destination resistance accords with the re-
gion code that is deduced from region resistance value.
Error 22: The region code does not accord.
Check whether the region code that is deduced from model
resistance and destination resistance accords with the re-
gion code that is deduced from region resistance value.
3. Peripheral
(3-2) EEPROM Check
Data write
t read, and accord check
Error 03: EEPROM write/read discord
0x9249, 0x2942 and 0x4294 are written to the address 0x00
to 0xFF of the EEPROM and then read for checking. Be-
fore writing, the data are saved, then after checking, they
are written to restore the contents of EEPROM.
0x9249, 0x2942 and 0x4294 are written to the address 0x00
to 0xFF of the EEPROM and then read for checking. Be-
fore writing, the data are saved, then after checking, they
are written to restore the contents of EEPROM.
### Syscon Diagnosis ###
3-2. EEPROM Check
Error 03: EEPROM Write/Read N
Address
: 00000001
Write Data
: 2492
Read Data
: 2490
Press NEXT Key to Continue
Press PREV key to Repeat
_
### Syscon Diagnosis ###
Check Menu
No. 5 Supply
0. Quit
1. All
2. ARP Register Check
3. ARP to RAM Data Bus
4. ARP to RAM Address Bus
5. ARP RAM Check
_
6-3
4. Servo
(4-2) Servo DSP Check
Data write
t read, and accord check
Error 12: Read data discord
0x9249, 0x2942 and 0x4294 are written to the RAM ad-
dress 0x602 of the Servo DSP and then read for checking.
0x9249, 0x2942 and 0x4294 are written to the RAM ad-
dress 0x602 of the Servo DSP and then read for checking.
(4-3) —————
Check no support.
(4-4) RF Amp Register Check
Data write
t read, and accord check
Error 13: RF Amp register write, and read data discord
Implement 8-bit shift operation of the 0x01 to the read-
able/writable register of the RF Amp. If once write data do
not accord with read data, it is NG.
Implement 8-bit shift operation of the 0x01 to the read-
able/writable register of the RF Amp. If once write data do
not accord with read data, it is NG.
5. Data Supply System
(5-2) ARP Register Check
Data write
t read, and accord check
Error 08: ARP register write, and read data discord
Data 0x00 to 0xFF is written sequentially to the ARP TMAX
register (address 0xC6) and then read for checking.
Data 0x00 to 0xFF is written sequentially to the ARP TMAX
register (address 0xC6) and then read for checking.
(5-3) ARP to RAM Data Bus
Data write
t read, and accord check
Error 09: ARP
Tt RAM data bus error
Data 0x0001 to 0x8000 where one bit each is set to 1 are
written to the address 0 of RAM (IC303) connected to the
ARP (IC302) through the bus, then they are read and
checked. In case of discord, written bit pattern and read
data are displayed. If data where multiple bits are 1 are
read, the bits concerned may touch each other. Further, if
data where certain bit is always 1 or 0 regardless of written
data, the line could be disconnected or shorted.
written to the address 0 of RAM (IC303) connected to the
ARP (IC302) through the bus, then they are read and
checked. In case of discord, written bit pattern and read
data are displayed. If data where multiple bits are 1 are
read, the bits concerned may touch each other. Further, if
data where certain bit is always 1 or 0 regardless of written
data, the line could be disconnected or shorted.
(5-4) ARP to RAM Address Bus
Data write
t other address read discord check
Error 10: ARP
Tt RAM address bus error
Caution: Address and data display in case of an error is
different from the display of other diagnosis (described
later).
Before starting the test, all addresses of RAM (IC303) are
cleared to 0x0000.
First, 0xA55A is written to the address 0x00000, and the
address data are read and checked from addresses 0x00001
to 0x80000 while shifting 1 bit each. Next, the data at that
address is cleared, and it is written to the address 0x00001,
and read and checked in the same manner. This check is
repeated up to the address 0x80000 while shifting the ad-
dress data by 1 bit each.
If data other than 0 is read at the addresses except written
address, an error is given because all addresses were al-
ready cleared to 0. In this check, the error display pattern is
different from that of other diagnosis; read data, written
address, and read address are displayed in this order. How-
ever, the message uses same template, and accordingly ex-
change Address and Data when reading. The following dis-
play, for example,
different from the display of other diagnosis (described
later).
Before starting the test, all addresses of RAM (IC303) are
cleared to 0x0000.
First, 0xA55A is written to the address 0x00000, and the
address data are read and checked from addresses 0x00001
to 0x80000 while shifting 1 bit each. Next, the data at that
address is cleared, and it is written to the address 0x00001,
and read and checked in the same manner. This check is
repeated up to the address 0x80000 while shifting the ad-
dress data by 1 bit each.
If data other than 0 is read at the addresses except written
address, an error is given because all addresses were al-
ready cleared to 0. In this check, the error display pattern is
different from that of other diagnosis; read data, written
address, and read address are displayed in this order. How-
ever, the message uses same template, and accordingly ex-
change Address and Data when reading. The following dis-
play, for example,
### Syscon Diagnosis ###
5-4. ARP to RAM Address Bus
Error 10: ARP - RAM Address B
Address
: 0000A55A
Write Data
: 00000000
Read Data
: 00080000
Press NEXT Key to Continue
Press PREV key to Repeat
_
shows the data 0xA55A was read from address 0x00080000 though
it was written to the address 0x00000000. This implies that these
addresses are in the form of shadow. Also, if the read data is not
0xA55A, another error will be present.
it was written to the address 0x00000000. This implies that these
addresses are in the form of shadow. Also, if the read data is not
0xA55A, another error will be present.
(5-5) ARP RAM Check
Data write
t read, and accord check
Error 11: ARP RAM read data discord
The program code data stored in ROM are copied to all
areas of RAM (IC303) connected to the ARP through the
bus, then they are read and checked if they accord. If the
detail check was selected initially, the data are written to
all areas and read, then the same test is conducted once
again with the data where all bits are inverted between 1
and 0. If discord is detected, faulty address, written data,
and read data are displayed following the error code 11,
and the test is suspended.
The program code data stored in ROM are copied to all
areas of RAM (IC303) connected to the ARP through the
bus, then they are read and checked if they accord. If the
detail check was selected initially, the data are written to
all areas and read, then the same test is conducted once
again with the data where all bits are inverted between 1
and 0. If discord is detected, faulty address, written data,
and read data are displayed following the error code 11,
and the test is suspended.
6-4
6. AV Decoder
(6-2) 1935 RAM
Data write
t read, and accord check
Error 14: AVD RAM read data discord
The program code data stored in ROM (IC107) are copied
to all areas of RAM (IC504, IC505) connected to the AVD
through the bus, then they are read and checked if they ac-
cord. Further, the same test is conducted once again with
the data where all bits are inverted between 1 and 0. If dis-
cord is detected, faulty address, written data, and read data
are displayed following the error code 14, and the test is
suspended.
During the test, OSD display becomes blank as the OSD
area is also checked.
The program code data stored in ROM (IC107) are copied
to all areas of RAM (IC504, IC505) connected to the AVD
through the bus, then they are read and checked if they ac-
cord. Further, the same test is conducted once again with
the data where all bits are inverted between 1 and 0. If dis-
cord is detected, faulty address, written data, and read data
are displayed following the error code 14, and the test is
suspended.
During the test, OSD display becomes blank as the OSD
area is also checked.
(6-3) 1935 SP
ROM
t AVD RAM t Video OUT
Error: Not detected.
The data including sub picture streams in ROM are trans-
ferred to the RAM in AVD, and output as video signals
from the AVD.
Though OSD display becomes blank, the output of video
signals continues until the key is pressed.
The data including sub picture streams in ROM are trans-
ferred to the RAM in AVD, and output as video signals
from the AVD.
Though OSD display becomes blank, the output of video
signals continues until the key is pressed.
7. Video Output
(7-2) Color Bar
AVD color bar command write
t Video OUT
Error: Not detected.
The command is transferred to the AVD, and the color bar
signals are output from video terminals.
The command is transferred to the AVD, and the color bar
signals are output from video terminals.
8. Audio Output
(8-2) ARP
(8-2) ARP
t1935
Data flow from supply system DRAM to SDRAM of AV
Decoder is tested.
Error 15: ARP
Decoder is tested.
Error 15: ARP
t 1935 video NG
16: ARP
t 1935 audio NG
(8-3) Test Tone
Pink noise output
Error: Not detected.
In the models without DD output, the test tone is output
from L and R of 2-channel only, and in the models with
DD output, the test tone is output from L and R of 2-chan-
nel, and all channels of 5.1 output.
After turning on all outputs, each time the [NEXT] key is
pressed, the output channel is switched for individual chan-
nel checking.
Error: Not detected.
In the models without DD output, the test tone is output
from L and R of 2-channel only, and in the models with
DD output, the test tone is output from L and R of 2-chan-
nel, and all channels of 5.1 output.
After turning on all outputs, each time the [NEXT] key is
pressed, the output channel is switched for individual chan-
nel checking.
Diagnosis Check Items List
2. Version Display
(2-2) Revision
(2-3) ROM Check Sum
(2-4) Model Type
(2-5) Region
(2-6) M’t Check
(2-2) Revision
(2-3) ROM Check Sum
(2-4) Model Type
(2-5) Region
(2-6) M’t Check
3. Peripheral
(3-2) EEPROM Check
(3-7) ———— (Function not supported)
(3-2) EEPROM Check
(3-7) ———— (Function not supported)
4. Servo
(4-2) Servo DSP Check
(4-3) ———— (Function not supported)
(4-4) RF Amp Register Check
(4-2) Servo DSP Check
(4-3) ———— (Function not supported)
(4-4) RF Amp Register Check
5. Data Supply System
(5-2) ARP Register Check
(5-3) ARP to RAM Data Bus
(5-4) ARP to RAM Address Bus
(5-5) ARP RAM Check
(5-2) ARP Register Check
(5-3) ARP to RAM Data Bus
(5-4) ARP to RAM Address Bus
(5-5) ARP RAM Check
6. AV Decoder
(6-2) 1935 RAM
(6-3) 1935 SP
(6-2) 1935 RAM
(6-3) 1935 SP
7. Video Output
(7-2) Color Bar\
(7-2) Color Bar\
8. Audio Output
(8-2) ARP
(8-2) ARP
t1935
(8-3) Test Tone
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