Cd Test Mode - Pioneer DEH-2500UI/XNUC Service Manual

5

6.4 CD TEST MODE

- Flow Chart
[4]+[6]->BUP+ACC ON [CD] or [SOURCE]
Test Mode IN Source ON
TRK MIN
[BAND]
Power On
(T.Offset is adjusted)
TRK MIN
00 00 00
[BAND] [3]
Power Off Focus Close
S curve check
TRK MIN SEC TRK MIN
91 91 91
[BAND] [1]
T.Close & AGC
Power Off
Applicable servomechanism
TRK MIN SEC TRK MIN
?tr ?min ?sec
[BAND]
[1]
Power Off F,T,RF AGC
F.Bias display switching
TRK MIN SEC TRK MIN
?? ??
[BAND]
Power Off
TRK MIN SEC
t
*1) TYP
TRK MIN SEC TRK
t
*2) Focus Close S. Curve
TRK MIN SEC TRK MIN
00 00 00 01
TRK MIN SEC
( 99 99 99)
*3) F.Offset Display t
RF.Offset
*4) 100TR Jump
*5) TRK/MIN/SEC t F.AGC t T.AGC Gain t F.Bias t RF AGC
*6) CRG motor voltage = 2 [V]
After the [EJECT] key is pressed keys other than the [EJECT] key should not be pressed, until disc ejection is complete.
When the key [2] or [3] is pressed during the Focus Search, the power supply should be immediately turned off (otherwise the lens sticks
to Wall, causing the actuator to be damaged).
In the case of 100TR Jump, the mechanism shall be set to the Tracking Close mode when the key is released.
When the power is turned on/off the gain of the RFAMP is reset to 0 dB. At the same time all the self-adjusting values shall return to the
default setting.
Do not do Tracking Servo Close before doing Focus Servo Close. (Because the overcurrent flows)
5
6
[Key]
Contents
Display
[2]
RF AMP
Gain switching
SEC TRK MIN
GG GG
[6] [1]
Focus Mode switching Tracking Servo
*2
Close
00 00 00
SEC TRK MIN SEC
0X 0X 0X or 99 99 99
[3]
RF AGC /
RF AGC coefficient display
SEC TRK MIN
?? ??
[3]
*5
F,T AGC / F.Bias
RF AGC
SEC TRK MIN SEC
?? ?tr ?min ?sec
t
+ 6 dB + 12 dB
MIN SEC TRK MIN SEC
06 06 06 12 12 12
t
F EQ measurement setting
SEC TRK MIN SEC
01 01 02 02
t T.Offset Display t
Switch to the order
of the original
display
DEH-2500UI/XNUC
6
7
*1
SEC
GG
[>] [<]
CRG + CRG -
*6
00 00 00 00 00 00
or 99 99 99 or 99 99 99
[>] [<]
CRG + CRG -
8X 8X 8X 8X 8X 8X
SEC
?? or 9X 9X 9X or 9X 9X 9X
[>] [<]
CRG/TR Jump + CRG/TR Jump -
*4
TRK MIN SEC TRK MIN
?tr ?min ?sec ?tr ?min ?sec
[2]
Tracking Open
8X 8X 8X
or 9X 9X 9X
[Key]
[BAND] Power On/Off
CRG + / TR Jump +
[>]
(Direction of the external surface)
CRG - / TR Jump -
[<]
02 (Direction of the internal surface)
[1] T. CLS & AGC & Applicable servomechanism /
AGC,AGC display setting
[2] RF Gain switching / Offset adjustment display /
T.Balance adjustment / T. Open
[3] F. Close,S. Curve / Rough Servo and RF AGC /
F,T,RF AGC
[6] F. Mode switching / Tracking Close
7
8
[2]
Self-adjusting
*6 *3
switching
TRK MIN SEC
?? ?? ??
[2]
T.Balance adjustment /
T.BAL coefficient display
TRK MIN SEC
?? ?? ??
[2]
Tracking Open
*4
SEC 8X 8X 8X
or 9X 9X 9X
*6
Operation
Test Mode
8
A
B
C
D
E
F
21