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Service Newsletter 2001 – BCU Audio 1/8
For internal use only PHILIPS
ISSUE SNL2001.03 (01-07-09)
Published by:
Service Depar tment Audio
BUSINESS CREATION UNIT AUDIO
03.01 TYPENUMBER(S): AX2000, AX2001, AX2002, AX2003, AX2011, AX5000, AX5001,
AX5002, AX5003, AX5004, AX5006, AX5011, AX5012, AX5013,
AX5014, AX5015, AX5016, AX5017, AX5018, AX5019
INFORMATION : Above mentioned typenumbers are produced with different CD-drives:
DA23LPH and DA23LNPH. The drives can be identified by the color
of the lens holder:
DA23LPH – black lens holder DA23LNPH – white lens holder
DA23LPH is no longer available as service sparepar t and has been
standardized to the newer DA23LNPH – 3103 309 05320.
Attention when replacing DA23LPH by DA23LNPH !
The new drive requires different software parameters and will not
work properly without the following hardware modification:
1. Remove pull-down resistor 3419L
2. Add pull-up resistor 3418LN
REMARKS :
P54
7400
SEG19
LCD - DRIVER
I/O PORT P5
P50
SEG23
P51
SEG22
P52
SEG21
P53
SEG20
SEG18
P70
SEG15
P57
SEG16
P56
SEG17
P55
B
C
to AUDIO-PART
LNL
B
C
2K7
3420
3401
220K
ESD
2
1
4K7
3416
1K
3404
36
28
29
30
31
32
333435
1401
SPPB51
0R
3418
1402
ESD-11H130
HOLD/RESUME
123 4
10K
3415
1K
3405
10K
3417
0R
3419
220K
3402
220K
CD-DRIVE DA23
VERSION SELECT
3403
ESD
DOOR
SWITCH
3406
1K
ESD
+2.6V
DBB_STEP
DBB_ON
+2.6V
chg_on
LF_POW
SERVICE NEWSLETTER
Page 2
03.02 TYPENUMBER(S): AZ1008, AZ1011, AZ1012
INFORMATION : In course of production, following changes have been implemented in
order to speed-up reading of TOC for some critical discs.
3832 changed from 6.8kΩ to 18kΩ (4822 117 10965)
2826 changed from 680pF to 1.5nF (4822 126 14247)
2864 changed from 27pF to 15pF (4822 126 13486)
REMARKS : The modification has been implemented in production from week
0122 onwards.
03.03 TYPENUMBER(S): AZ1008, AZ1011, AZ1012
SYMPTOM :
Cannot read CD.
CURE : The CD Door Switch (item 101) is not mounted properly. It cannot be
activated by the gear arm of CD Door (item 48).
Following countermeasures have been initiated:
1. Fixture in soldering process to ensure Door Switch is mounted
properly on the printed board.
2.Thickness of gear arm on CD Door increased to ensure enough
surface to activate the switch.
REMARKS : The modified parts have been implemented in production from week
0109 onwards.
03.04 TYPENUMBER(S): AZ1018
INFORMATION : In course of production, following changes have been implemented in
order to improve the problem “low recording level”.
3363 and 3364 changed from 10kΩ to 18kΩ (4822 117 10965)
REMARKS : The modification has been implemented in production from week
0114 onwards.
03.05 TYPENUMBER(S): AZ1018
INFORMATION : The procedure how to change the tuning grid is not mentioned in the
Instruction Manual. Please refer to below descr iption:
• Switch off the set (mode switch in TAPE/OFF position).
• To select 9kHz: Hold PLAY-PAUSE and SEARCH S depressed
while switching to Tuner mode.
• To select 10kHz: Hold PLAY-PAUSE and SEARCH T depressed
while switching to Tuner mode.
Note:This procedure will clear all preset stations.
REMARKS : From week 0122 onwards, an addendum sheet has been added to
the sets.
1172IRIS CODE
Service Newsletter 2001 – BCU Audio 2/8
Page 3
03.06 TYPENUMBER(S): AZ2760, AZ2765, AZ2785
INFORMATION : The procedure how to change the tuning grid is not mentioned in the
Instruction Manual. Please refer to below descr iption:
• Select Tuner mode and switch off the set.
• To select 9kHz: Hold BAND and SEARCH O depressed while
switching Power On.
• To select 10kHz: Hold BAND and SEARCH P depressed while
switching Power On.
Note:This procedure will clear all preset stations.
REMARKS : From week 0122 onwards, an addendum sheet has been added to
the sets.
03.07 TYPENUMBER(S): CDR570, CDR770, CDR771, CDR775, CDR776, CDR778
INFORMATION : In course of production, the Power Supply Unit “PSU CDR3 ECO” has
been modified:
6230 changed to BYV28-400 (4822 130 11415)
3113 changed to 1kΩ (4822 051 10102)
2253 added 4.7nF (2020 558 90449)
For reference see Service Infor mation A00-254.
Above changes have been implemented in course of production.
Manually adapted PSU’s are stamped “OP02”.
New modified produced PSU’s are stamped “OP03”.
Adapted PSU’s and new PSU’s will carry the following 12NC:
EURO : 3122 427 2200.5
USA : 3122 427 2201.5
WR : 3122 427 2202.5
Change code and 12NC are printed on a sticker which is placed on
capacitor 2121.
REMARKS : It is recommended to check respectively exchange above mentioned
components in all sets brought in for repair.
Service Newsletter 2001 – BCU Audio 3/8
Page 4
03.08 TYPENUMBER(S): CDR570, CDR770, CDR771, CDR775, CDR776, CDR778
SYMPTOM :
a) Set switches off when the mains cord is moved
b) No function
c) Set switches off intermittently
CURE : The copper tracks on the soldering side of the Power Supply Unit
“PSU CDR3 ECO” run too close to the edge of the printed circuit
board.This may cause
• a mechanical disruption of the copper tracks or
• a short-circuit to the metal backplate which in turn damages resistor
3201.
To solve this problem it is advised to fix a 2.5 cm piece of insulating
tape (i.e.TESA 4657, width = 1 cm) to the edge of the printed circuit
board as shown in pictures below.
1.
Bottom side
printed board
Component side
printed board
2.
0112IRIS CODE
Service Newsletter 2001 – BCU Audio 4/8
Page 5
REMARKS : The insulating tape has been implemented in production from week
0105 onwards. It is recommended to check all sets brought in for
repair.
The modification is mandatory for all PSU’s produced between week
0031 till 0105 with the following 12NC:
EURO : 3122 427 2200.1, .2, .3, .5
USA : 3122 427 2201.1, .2, .3, .5
WR : 3122 427 2202.1, .2, .3, .5
Change code and 12NC are printed on a sticker which is placed on
capacitor 2121.
03.09 TYPENUMBER(S): CDR570, CDR770, CDR771, CDR775, CDR776, CDR778
SYMPTOM :
Remote Control does not work properly or works intermittently.
CURE : Add a 100µF capacitor (4822 124 41584) on position 2213 of the
Power Supply Unit “PSU CDR3 ECO”.
For reference see Service Infor mation A00-254.
REMARKS : 2213 has been implemented in course of production.
Manually adapted PSU’s are stamped “OP02”.
Modified new produced PSU’s are stamped “OP03”.
Adapted PSU’s and new PSU’s will carry the following 12NC:
EURO : 3122 427 2200.5
USA : 3122 427 2201.5
WR : 3122 427 2202.5
Change code and 12NC are printed on a sticker which is placed on
capacitor 2121.
03.10 TYPENUMBER(S): CDR785, CDR786
INFORMATION : Correction to the Service Manual, Electrical Partslist
The codenumber for the NTC resistor 3399 is missing:
3399 4822 117 12063 10kΩ NTC
REMARKS :
03.11 TYPENUMBER(S): ECO5, ECO6 T uner Board
SYMPTOM :
Auto Search Mode does not function.Tuner does not stop at any
station.When the tuner is tuned manually to a strong transmitter it
does not switch to STEREO (DC voltage on pin 24 of the Radio IC
7101 is 4.8V instead of 2V).
CURE : Exchange capacitor 2141 100nF 10% 50V (4822 126 13838).
REMARKS :
2621IRIS CODE
1512IRIS CODE
Service Newsletter 2001 – BCU Audio 5/8
Page 6
03.12 TYPENUMBER(S): FW-R7, FW-R8, FW-R88
SYMPTOM :
The CDR Module does not work correctly with ComPair.
Known problems:
1. Download of a new software version does not function
2. “Dead module” after replacement
CURE : 1.When the CDR Module is supplied by the Power Supply Unit of the
set, always make sure that
• the set is switched to CDR-mode and
• the Front-, AF-, Power L/R- and Supply CDr/w Boards are
connected properly.
This is necessary because the +5V supply for the CDR Module is
controlled by the Front-µP. Via IIC-Bus and IIC-shift register
(located on AF-Board) the CDR_ON signal is generated and via
Power L/R Board connected to Supply CDr/w Board.
2. Check solder connections of DASP IC.
Past experience has shown that most communication errors are
caused by weak solder connections of the DASP IC (item 7701).
REMARKS : After download of a new software version also look to the final
message that download was done successfully!
03.13 TYPENUMBER(S): FW-V220, FW-V320 and FW-V720
SYMPTOM :
No music, only noise is audible during MP3 playback.
CURE : Due to residual voltage, the MPEG board does not get a proper reset.
The problem can be resolved by the following rework
(see drawings on next page):
1. Cut a copper track
2. Add a resistor 1kΩ (4822 050 21002) across +5V and ground
3. Add a resistor 10kΩ (4822 050 21003)
4. Add diode 1N4148 (4822 130 30621)
2451IRIS CODE
1811IRIS CODE
Service Newsletter 2001 – BCU Audio 6/8
Page 7
Portion of Circuit on page 8-7 Portion of Circuit on page 8-8
Portion of Layout on page 8-6, Copper Shielding side
REMARKS :
10k
1k
Cut
Copper
track
1N4148
&
C
D
E
MIC_DET
&
MIC_DET
Echo Function
Enable
Disable
Low
220R3244
High
1
2
3
1602
EH-B
2220
100n
100p
2261
2219
47u
AGND
AGND
100n
2218
47u
2217
VAA
3245 1K
2265
100p
+5V
Cut Copper
track
10k
1N4148
E
F
9
5V
5V
5207
100n
2201
5213
100u
2258
2210
100n
100n
2206
+5V
VCC7
VCC8
3139 118 54470 ...88170 sh1 ... 3448 pt 1 dd wk107
1k
Service Newsletter 2001 – BCU Audio 7/8
Page 8
03.14 TYPENUMBER(S): MC-50, MC-70
SYMPTOM :
The set reacts on Philips TV remote controls.
In worst case it switches to Service Test mode.
CURE : The problem is solved with new microprocessor software version 20.
The new microprocessor (item 7102 on Front Display Board) is
available with codenumber 9965 000 09493.
REMARKS : Check the microprocessor software version before replacement.
If the existing software is version 18, additional hardware adaptations
are required. See below 03.15, step 3a for details.
03.15 TYPENUMBER(S): MC-50, MC-70
SYMPTOM :
The 3-Disc Tray Changer “3DTC” is jammed and cannot be released
by a reset (disconnect/reconnect mains).
CURE : 1) Check and repair the 3DTC mechanism as necessary
2) Check the software version of the existing microprocessor 7102
3a) For software version 18 do the following:
F
ront Display Board
- replace 7102 with new microprocessor (9965 000 09493)
- change resistors 3209, 3210, 3211 to 220Ω (4822 051 30221)
CD Board
- change resistor 3783 to 2.7kΩ (4822 051 30272)
- change resistor 3790 and 3791 to 3.3kΩ (4822 051 30332)
3b) For software version 19 do the following:
Front Display Board
- replace 7102 with new microprocessor (9965 000 09493)
REMARKS :
X161IRIS CODE
X511IRIS CODE
Service Newsletter 2001 – BCU Audio 8/8
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