Philips _service_audio, As99-06 Datasheet

Page 1
Service Newsletter 1999 – Audio Systems 1/2
For internal use only PHILIPS
ISSUE AS99.06 (99-09-08)
Published by: Service Depar tment Audio Systems
LINE OF BUSINESS AUDIO SYSTEMS
06.01 TYPENUMBER(S): CD713, CD723, CD753
This module is equipped with CD-drive VAM1201 – 4822 691 10615. Based on repair feedback it has been found that sometimes the VAM1201 is replaced by CDM12.1 – 4822 691 30278.
Although drives seem to be identical, it is not allowed to replace VAM1201 by CDM12.1.The higher clamping force of the CDM12.1 might cause problems during open/close.
REMARKS :
06.02 TYPENUMBER(S): FW399V
SYMPTOM :
Pictures skip and jump when playing a Video-CD.
CURE : The problem can be solved by the following modification on the
Servo Board:
1. Add elcap 2861 22µF 16V (4822 124 41796) into the location provided on the printed board
2. Replace bare wire 9015 with resistor 3872 47Ω (4822 116 52195)
REMARKS :
06.03 TYPENUMBER(S): FW399V/21/21M
SYMPTOM :
Sometimes the set does not read the TOC of some critical CDs. “NO DISC” is shown on the display.
CURE : The problem can be solved by the following modification on the
Main Combi Board:
1. Delete elcap 2342 100µF 10V
REMARKS : Above modification is implemented in production from week 9932
onwards.
X15CIRIS CODE
X531IRIS CODE
SERVICE NEWSLETTER
Page 2
06.04 TYPENUMBER(S): FW850C, FW855C, FW860P, FW880P, FW880W
SYMPTOM :
Program number is not displayed for Tuner frequency 100.2MHz.
CURE : The problem is caused by software. Although the program number is
not displayed, the program number can still be selected. An improved software (version 26) for microprocesssor IC 7461 TMP87CS71F is available via service code 4822 900 11253.
REMARKS :
X311IRIS CODE
Service Newsletter 1999 – Audio Systems 2/2
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